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119
Docs/codefirst.md
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## 类型映射 ## 类型映射
| csharp | MySql | SqlServer | PostgreSQL | | csharp | MySql | SqlServer | PostgreSQL | oracle |
| - | - | - | - | | - | - | - | - |
| bool \| bool? | bit(1) | bit | bool | | bool \| bool? | bit(1) | bit | bool | number(1) |
| sbyte \| sbyte? | tinyint(3) | smallint | int2 | | sbyte \| sbyte? | tinyint(3) | smallint | int2 | number(4) |
| short \| short? | smallint(6) | smallint | int2 | | short \| short? | smallint(6) | smallint | int2 | number(6) |
| int \| int? | int(11) | int | int4 | | int \| int? | int(11) | int | int4 | number(11) |
| long \| long? | bigint(20) | bigint | int8 | | long \| long? | bigint(20) | bigint | int8 | number(21) |
| byte \| byte? | tinyint(3) unsigned | tinyint | int2 | | byte \| byte? | tinyint(3) unsigned | tinyint | int2 | number(3) |
| ushort \| ushort? | smallint(5) unsigned | int | int4 | | ushort \| ushort? | smallint(5) unsigned | int | int4 | number(5) |
| uint \| uint? | int(10) unsigned | bigint | int8 | | uint \| uint? | int(10) unsigned | bigint | int8 | number(10) |
| ulong \| ulong? | bigint(20) unsigned | decimal(20,0) | numeric(20,0) | | ulong \| ulong? | bigint(20) unsigned | decimal(20,0) | numeric(20,0) | number(20) |
| double \| double? | double | float | float8 | | double \| double? | double | float | float8 | float(126) |
| float \| float? | float | real | float4 | | float \| float? | float | real | float4 | float(63) |
| decimal \| decimal? | decimal(10,2) | decimal(10,2) | numeric(10,2) | | decimal \| decimal? | decimal(10,2) | decimal(10,2) | numeric(10,2) | number(10,2) |
| Guid \| Guid? | char(36) | uniqueidentifier | uuid | | Guid \| Guid? | char(36) | uniqueidentifier | uuid | char(36 CHAR) |
| TimeSpan \| TimeSpan? | time | time | time | | TimeSpan \| TimeSpan? | time | time | time | interval day(2) to second(6) |
| DateTime \| DateTime? | datetime | datetime | timestamp | | DateTime \| DateTime? | datetime | datetime | timestamp | timestamp(6) |
| DateTimeOffset \| DateTimeOffset? | - | - | datetimeoffset | | DateTimeOffset \| DateTimeOffset? | - | - | datetimeoffset | timestamp(6) with local time zone |
| Enum \| Enum? | enum | int | int4 | | Enum \| Enum? | enum | int | int4 | number(16) |
| FlagsEnum \| FlagsEnum? | set | bigint | int8 | | FlagsEnum \| FlagsEnum? | set | bigint | int8 | number(32) |
| byte[] | varbinary(255) | varbinary(255) | bytea | | byte[] | varbinary(255) | varbinary(255) | bytea | blob |
| string | varchar(255) | nvarchar(255) | varchar(255) | | string | varchar(255) | nvarchar(255) | varchar(255) | nvarchar2(255) |
| MygisPoint | point | - | - | | MygisPoint | point | - | - | - |
| MygisLineString | linestring | - | - | | MygisLineString | linestring | - | - | - |
| MygisPolygon | polygon | - | - | | MygisPolygon | polygon | - | - | - |
| MygisMultiPoint | multipoint | - | - | | MygisMultiPoint | multipoint | - | - | - |
| MygisMultiLineString | multilinestring | - | - | | MygisMultiLineString | multilinestring | - | - | - |
| MygisMultiPolygon | multipolygon | - | - | | MygisMultiPolygon | multipolygon | - | - | - |
| BitArray | - | - | varbit(64) | | BitArray | - | - | varbit(64) | - |
| NpgsqlPoint \| NpgsqlPoint? | - | - | point | | NpgsqlPoint \| NpgsqlPoint? | - | - | point | - |
| NpgsqlLine \| NpgsqlLine? | - | - | line | | NpgsqlLine \| NpgsqlLine? | - | - | line | - |
| NpgsqlLSeg \| NpgsqlLSeg? | - | - | lseg | | NpgsqlLSeg \| NpgsqlLSeg? | - | - | lseg | - |
| NpgsqlBox \| NpgsqlBox? | - | - | box | | NpgsqlBox \| NpgsqlBox? | - | - | box | - |
| NpgsqlPath \| NpgsqlPath? | - | - | path | | NpgsqlPath \| NpgsqlPath? | - | - | path | - |
| NpgsqlPolygon \| NpgsqlPolygon? | - | - | polygon | | NpgsqlPolygon \| NpgsqlPolygon? | - | - | polygon | - |
| NpgsqlCircle \| NpgsqlCircle? | - | - | circle | | NpgsqlCircle \| NpgsqlCircle? | - | - | circle | - |
| (IPAddress Address, int Subnet) \| (IPAddress Address, int Subnet)? | - | - | cidr | | (IPAddress Address, int Subnet) \| (IPAddress Address, int Subnet)? | - | - | cidr | - |
| IPAddress | - | - | inet | | IPAddress | - | - | inet | - |
| PhysicalAddress | - | - | macaddr | | PhysicalAddress | - | - | macaddr | - |
| NpgsqlRange\<int\> \| NpgsqlRange\<int\>? | - | - | int4range | | NpgsqlRange\<int\> \| NpgsqlRange\<int\>? | - | - | int4range | - |
| NpgsqlRange\<long\> \| NpgsqlRange\<long\>? | - | - | int8range | | NpgsqlRange\<long\> \| NpgsqlRange\<long\>? | - | - | int8range | - |
| NpgsqlRange\<decimal\> \| NpgsqlRange\<decimal\>? | - | - | numrange | | NpgsqlRange\<decimal\> \| NpgsqlRange\<decimal\>? | - | - | numrange | - |
| NpgsqlRange\<DateTime\> \| NpgsqlRange\<DateTime\>? | - | - | tsrange | | NpgsqlRange\<DateTime\> \| NpgsqlRange\<DateTime\>? | - | - | tsrange | - |
| PostgisPoint | - | - | geometry | | PostgisPoint | - | - | geometry | - |
| PostgisLineString | - | - | geometry | | PostgisLineString | - | - | geometry | - |
| PostgisPolygon | - | - | geometry | | PostgisPolygon | - | - | geometry | - |
| PostgisMultiPoint | - | - | geometry | | PostgisMultiPoint | - | - | geometry | - |
| PostgisMultiLineString | - | - | geometry | | PostgisMultiLineString | - | - | geometry | - |
| PostgisMultiPolygon | - | - | geometry | | PostgisMultiPolygon | - | - | geometry | - |
| PostgisGeometry | - | - | geometry | | PostgisGeometry | - | - | geometry | - |
| PostgisGeometryCollection | - | - | geometry | | PostgisGeometryCollection | - | - | geometry | - |
| Dictionary<string, string> | - | - | hstore | | Dictionary<string, string> | - | - | hstore | - |
| JToken | - | - | jsonb | | JToken | - | - | jsonb | - |
| JObject | - | - | jsonb | | JObject | - | - | jsonb | - |
| JArray | - | - | jsonb | | JArray | - | - | jsonb | - |
| 数组 | - | - | 以上所有类型都支持 | | 数组 | - | - | 以上所有类型都支持 | - |
> 以上类型和长度是默认值，可手工设置，如 string 属性可指定 [Column(DbType = "varchar(max)")] > 以上类型和长度是默认值，可手工设置，如 string 属性可指定 [Column(DbType = "varchar(max)")]
```csharp ```csharp
IFreeSql fsql = new FreeSql.FreeSqlBuilder() IFreeSql fsql = new FreeSql.FreeSqlBuilder()
.UseConnectionString(FreeSql.DataType.MySql, "Data Source=127.0.0.1;Port=3306;User ID=root;Password=root;Initial Catalog=cccddd;Charset=utf8;SslMode=none;Max pool size=10") .UseConnectionString(FreeSql.DataType.MySql, "Data Source=127.0.0.1;Port=3306;User ID=root;Password=root;Initial Catalog=cccddd;Charset=utf8;SslMode=none;Max pool size=10")
.UseAutoSyncStructure(true)
.UseMonitorCommand(
cmd => {
Console.WriteLine(cmd.CommandText);
}, //监听SQL命令对象，在执行前
(cmd, traceLog) => {
Console.WriteLine(traceLog);
}) //监听SQL命令对象，在执行后
.Build(); .Build();
``` ```

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# 表达式函数 # 表达式函数
| 表达式 | MySql | SqlServer | PostgreSQL | 功能说明 | | 表达式 | MySql | SqlServer | PostgreSQL | Oracle | 功能说明 |
| - | - | - | - | - | | - | - | - | - | - |
| a ? b : c | case when athen b else c end | case when athen b else c end | case when athen b else c end | a成立时取b值，否则取c值 | | a ? b : c | case when a then b else c end | case when a then b else c end | case when a then b else c end | case when a then b else c end | a成立时取b值，否则取c值 |
| a ?? b | ifnull(a, b) | isnull(a, b) | coalesce(a, b) | 当a为null时，取b值 | | a ?? b | ifnull(a, b) | isnull(a, b) | coalesce(a, b) | nvl(a, b) | 当a为null时，取b值 |
| 数字 + 数字 | a + b | a + b | a + b | 数字相加 | | 数字 + 数字 | a + b | a + b | a + b | a + b | 数字相加 |
| 数字 + 字符串 | concat(a, b) | cast(a as varchar) + cast(b as varchar) | case(a as varchar)\|\| b | 字符串相加，a或b任意一个为字符串时 | | 数字 + 字符串 | concat(a, b) | cast(a as varchar) + cast(b as varchar) | case(a as varchar)\|\| b | a\|\| b | 字符串相加，a或b任意一个为字符串时 |
| a - b | a - b | a - b | a - b | 减 | a - b | a - b | a - b | a - b | a - b | 减
| a * b | a * b | a * b | a * b | 乘 | a * b | a * b | a * b | a * b | a * b | 乘
| a / b | a / b | a / b | a / b | 乘 | a / b | a / b | a / b | a / b | a / b | 除
| a % b | a % b | a % b | a % b | 模 | a % b | a % b | a % b | a % b | mod(a,b) | 模
> 等等... > 等等...
### 数组 ### 数组
| 表达式 | MySql | SqlServer | PostgreSQL | 功能说明 | | 表达式 | MySql | SqlServer | PostgreSQL | Oracle | 功能说明 |
| - | - | - | - | - | | - | - | - | - | - |
| a.Length | - | - | case when a is null then 0 else array_length(a,1) end | 数组长度 | | a.Length | - | - | case when a is null then 0 else array_length(a,1) end | - | 数组长度 |
| 常量数组.Length | - | - | array_length(array[常量数组元素逗号分割],1) | 数组长度 | | 常量数组.Length | - | - | array_length(array[常量数组元素逗号分割],1) | - | 数组长度 |
| a.Any() | - | - | case when a is null then 0 else array_length(a,1) end > 0 | 数组是否为空 | | a.Any() | - | - | case when a is null then 0 else array_length(a,1) end > 0 | - | 数组是否为空 |
| 常量数组.Contains(b) | b in (常量数组元素逗号分割) | b in (常量数组元素逗号分割) | b in (常量数组元素逗号分割) | IN查询 | | 常量数组.Contains(b) | b in (常量数组元素逗号分割) | b in (常量数组元素逗号分割) | b in (常量数组元素逗号分割) | b in (常量数组元素逗号分割) | IN查询 |
| a.Contains(b) | - | - | a @> array[b] | a数组是否包含b元素 | | a.Contains(b) | - | - | a @> array[b] | - | a数组是否包含b元素 |
| a.Concat(b) | - | - | a \|\| b | 数组相连 | | a.Concat(b) | - | - | a \|\| b | - | 数组相连 |
| a.Count() | - | - | 同 Length | 数组长度 | | a.Count() | - | - | 同 Length | - | 数组长度 |
### 字典 Dictionary<string, string> ### 字典 Dictionary<string, string>
| 表达式 | MySql | SqlServer | PostgreSQL | 功能说明 | | 表达式 | MySql | SqlServer | PostgreSQL | Oracle | 功能说明 |
| - | - | - | - | - | | - | - | - | - | - |
| a.Count | - | - | case when a is null then 0 else array_length(akeys(a),1) end | 字典长度 | | a.Count | - | - | case when a is null then 0 else array_length(akeys(a),1) end | - | 字典长度 |
| a.Keys | - | - | akeys(a) | 返回字典所有key数组 | | a.Keys | - | - | akeys(a) | - | 返回字典所有key数组 |
| a.Values | - | - | avals(a) | 返回字典所有value数组 | | a.Values | - | - | avals(a) | - | 返回字典所有value数组 |
| a.Contains(b) | - | - | a @> b | 字典是否包含b | a.Contains(b) | - | - | a @> b | - | 字典是否包含b
| a.ContainsKey(b) | - | - | a? b | 字典是否包含key | a.ContainsKey(b) | - | - | a? b | - | 字典是否包含key
| a.Concat(b) | - | - | a \|\| b | 字典相连 | | a.Concat(b) | - | - | a \|\| b | - | 字典相连 |
| a.Count() | - | - | 同 Count | 字典长度 | | a.Count() | - | - | 同 Count | - | 字典长度 |
### JSON JToken/JObject/JArray ### JSON JToken/JObject/JArray
| 表达式 | MySql | SqlServer | PostgreSQL | 功能说明 | | 表达式 | MySql | SqlServer | PostgreSQL | Oracle | 功能说明 |
| - | - | - | - | - | | - | - | - | - | - |
| a.Count | - | - | jsonb_array_length(coalesce(a, '[])) | json数组类型的长度 | | a.Count | - | - | jsonb_array_length(coalesce(a, '[])) | - | json数组类型的长度 |
| a.Any() | - | - | jsonb_array_length(coalesce(a, '[])) > 0 | json数组类型，是否为空 | | a.Any() | - | - | jsonb_array_length(coalesce(a, '[])) > 0 | - | json数组类型，是否为空 |
| a.Contains(b) | - | - | coalesce(a, '{}') @> b::jsonb | json中是否包含b | | a.Contains(b) | - | - | coalesce(a, '{}') @> b::jsonb | - | json中是否包含b |
| a.ContainsKey(b) | - | - | coalesce(a, '{}') ? b | json中是否包含键b | | a.ContainsKey(b) | - | - | coalesce(a, '{}') ? b | - | json中是否包含键b |
| a.Concat(b) | - | - | coalesce(a, '{}') || b::jsonb | 连接两个json | | a.Concat(b) | - | - | coalesce(a, '{}') || b::jsonb | - | 连接两个json |
| Parse(a) | - | - | a::jsonb | 转化字符串为json类型 | | Parse(a) | - | - | a::jsonb | - | 转化字符串为json类型 |
### 字符串对象 ### 字符串对象
| 表达式 | MySql | SqlServer | PostgreSQL | 功能说明 | | 表达式 | MySql | SqlServer | PostgreSQL | Oracle | 功能说明 |
| - | - | - | - | - | | - | - | - | - | - |
| string.Empty | '' | '' | '' | 空字符串表示 | | string.Empty | '' | '' | '' | 空字符串表示 |
| string.IsNullOrEmpty(a) | (a is null or a = '') | (a is null or a = '') | (a is null or a = '') | 空字符串表示 | | string.IsNullOrEmpty(a) | (a is null or a = '') | (a is null or a = '') | (a is null or a = '') | (a is null or a = '') | 空字符串表示 |
| a.CompareTo(b) | strcmp(a, b) | - | case when a = b then 0 when a > b then 1 else -1 end | 比较a和b大小 | | a.CompareTo(b) | strcmp(a, b) | - | case when a = b then 0 when a > b then 1 else -1 end | case when a = b then 0 when a > b then 1 else -1 end | 比较a和b大小 |
| a.Contains('b') | a like '%b%' | a like '%b%' | a ilike'%b%' | a是否包含b | | a.Contains('b') | a like '%b%' | a like '%b%' | a ilike'%b%' | a like '%b%' | a是否包含b |
| a.EndsWith('b') | a like '%b' | a like '%b' | a ilike'%b' | a尾部是否包含b | | a.EndsWith('b') | a like '%b' | a like '%b' | a ilike'%b' | a like '%b' | a尾部是否包含b |
| a.IndexOf(b) | locate(a, b) - 1 | locate(a, b) - 1 | strpos(a, b) - 1 | 查找a中出现b的位置 | | a.IndexOf(b) | locate(a, b) - 1 | locate(a, b) - 1 | strpos(a, b) - 1 | instr(a, b, 1, 1) - 1 | 查找a中出现b的位置 |
| a.Length | char_length(a) | len(a) | char_length(a) | 返回a的字符串长度 | | a.Length | char_length(a) | len(a) | char_length(a) | length(a) | 返回a的字符串长度 |
| a.PadLeft(b, c) | lpad(a, b, c) | - | lpad(a, b, c) | 在a的左侧充字符c，直到字符串长度大于b | | a.PadLeft(b, c) | lpad(a, b, c) | - | lpad(a, b, c) | lpad(a, b, c) | 在a的左侧充字符c，直到字符串长度大于b |
| a.PadRight(b, c) | rpad(a, b, c) | - | rpad(a, b, c) | 在a的右侧充字符c，直到字符串长度大于b | | a.PadRight(b, c) | rpad(a, b, c) | - | rpad(a, b, c) | rpad(a, b, c) | 在a的右侧充字符c，直到字符串长度大于b |
| a.Replace(b, c) | replace(a, b, c) | replace(a, b, c) | replace(a, b, c) | 将a中字符串b，替换成c | | a.Replace(b, c) | replace(a, b, c) | replace(a, b, c) | replace(a, b, c) | replace(a, b, c) | 将a中字符串b，替换成c |
| a.StartsWith('b') | a like 'b%' | a like 'b%' | a ilike'b%' | a头部是否包含b | | a.StartsWith('b') | a like 'b%' | a like 'b%' | a ilike'b%' | a like 'b%' | a头部是否包含b |
| a.Substring(b, c) | substr(a, b, c + 1) | substring(a, b, c + 1) | substr(a, b, c + 1) | 截取a中位置b到c的内容 | | a.Substring(b, c) | substr(a, b, c + 1) | substring(a, b, c + 1) | substr(a, b, c + 1) | substr(a, b, c + 1) | 截取a中位置b到c的内容 |
| a.ToLower | lower(a) | lower(a) | lower(a) | 转小写 | | a.ToLower | lower(a) | lower(a) | lower(a) | lower(a) | 转小写 |
| a.ToUpper | upper(a) | upper(a) | upper(a) | 转大写 | | a.ToUpper | upper(a) | upper(a) | upper(a) | upper(a) | 转大写 |
| a.Trim | trim(a) | trim(a) | trim(a) | 移除两边字符 | | a.Trim | trim(a) | trim(a) | trim(a) | trim(a) | 移除两边字符 |
| a.TrimEnd | rtrim(a) | rtrim(a) | rtrim(a) | 移除左侧指定字符 | | a.TrimEnd | rtrim(a) | rtrim(a) | rtrim(a) | rtrim(a) | 移除左侧指定字符 |
| a.TrimStart | ltrim(a) | ltrim(a) | ltrim(a) | 移除右侧指定字符 | | a.TrimStart | ltrim(a) | ltrim(a) | ltrim(a) | ltrim(a) | 移除右侧指定字符 |
### 日期对象 ### 日期对象
| 表达式 | MySql | SqlServer | PostgreSQL | | 表达式 | MySql | SqlServer | PostgreSQL | Oracle |
| - | - | - | - | | - | - | - | - |
| DateTime.Now | now() | getdate() | current_timestamp | | DateTime.Now | now() | getdate() | current_timestamp | systimestamp |
| DateTime.UtcNow | utc_timestamp() | getutcdate() | (current_timestamp at time zone 'UTC') | | DateTime.UtcNow | utc_timestamp() | getutcdate() | (current_timestamp at time zone 'UTC') | sys_extract_utc(systimestamp) |
| DateTime.Today | curdate | convert(char(10),getdate(),120) | current_date | | DateTime.Today | curdate | convert(char(10),getdate(),120) | current_date | trunc(systimestamp) |
| DateTime.MaxValue | cast('9999/12/31 23:59:59' as datetime) | '1753/1/1 0:00:00' | '0001/1/1 0:00:00'::timestamp | | DateTime.MaxValue | cast('9999/12/31 23:59:59' as datetime) | '9999/12/31 23:59:59' | '9999/12/31 23:59:59'::timestamp | to_timestamp('9999-12-31 23:59:59','YYYY-MM-DD HH24:MI:SS.FF6') |
| DateTime.MinValue | cast('0001/1/1 0:00:00' as datetime) | '9999/12/31 23:59:59' | '9999/12/31 23:59:59'::timestamp | | DateTime.MinValue | cast('0001/1/1 0:00:00' as datetime) | '1753/1/1 0:00:00' | '0001/1/1 0:00:00'::timestamp | to_timestamp('0001-01-01 00:00:00','YYYY-MM-DD HH24:MI:SS.FF6') |
| DateTime.Compare(a, b) | a - b | a - b | extract(epoch from a::timestamp-b::timestamp) | | DateTime.Compare(a, b) | a - b | a - b | extract(epoch from a::timestamp-b::timestamp) | extract(day from (a-b)) |
| DateTime.DaysInMonth(a, b) | dayofmonth(last_day(concat(a, '-', b, '-1'))) | datepart(day, dateadd(day, -1, dateadd(month, 1, cast(a as varchar) + '-' + cast(b as varchar) + '-1'))) | extract(day from (a || '-' || b || '-01')::timestamp+'1 month'::interval-'1 day'::interval) | | DateTime.DaysInMonth(a, b) | dayofmonth(last_day(concat(a, '-', b, '-1'))) | datepart(day, dateadd(day, -1, dateadd(month, 1, cast(a as varchar) + '-' + cast(b as varchar) + '-1'))) | extract(day from (a || '-' || b || '-01')::timestamp+'1 month'::interval-'1 day'::interval) | cast(to_char(last_day(a||'-'||b||'-01'),'DD') as number) |
| DateTime.Equals(a, b) | a = b | a = b | a = b | | DateTime.Equals(a, b) | a = b | a = b | a = b | a = b |
| DateTime.IsLeapYear(a) | a%4=0 and a%100<>0 or a%400=0 | a%4=0 and a%100<>0 or a%400=0 | a%4=0 and a%100<>0 or a%400=0 | | DateTime.IsLeapYear(a) | a%4=0 and a%100<>0 or a%400=0 | a%4=0 and a%100<>0 or a%400=0 | a%4=0 and a%100<>0 or a%400=0 | mod(a,4)=0 AND mod(a,100)<>0 OR mod(a,400)=0 |
| DateTime.Parse(a) | cast(a as datetime) | cast(a as datetime) | a::timestamp | | DateTime.Parse(a) | cast(a as datetime) | cast(a as datetime) | a::timestamp | to_timestamp(a,'YYYY-MM-DD HH24:MI:SS.FF6') |
| a.Add(b) | date_add(a, interval b microsecond) | dateadd(millisecond, b / 1000, a) | a::timestamp+(b||' microseconds')::interval | 增加TimeSpan值 | | a.Add(b) | date_add(a, interval b microsecond) | dateadd(millisecond, b / 1000, a) | a::timestamp+(b||' microseconds')::interval | 增加TimeSpan值 | a + b |
| a.AddDays(b) | date_add(a, interval b day) | dateadd(day, b, a) | a::timestamp+(b||' day')::interval | | a.AddDays(b) | date_add(a, interval b day) | dateadd(day, b, a) | a::timestamp+(b||' day')::interval | a + b |
| a.AddHours(b) | date_add(a, interval b hour) | dateadd(hour, b, a) | a::timestamp+(b||' hour')::interval | | a.AddHours(b) | date_add(a, interval b hour) | dateadd(hour, b, a) | a::timestamp+(b||' hour')::interval | a + b/24 |
| a.AddMilliseconds(b) | date_add(a, interval b*1000 microsecond) | dateadd(millisecond, b, a) | a::timestamp+(b||' milliseconds')::interval | | a.AddMilliseconds(b) | date_add(a, interval b*1000 microsecond) | dateadd(millisecond, b, a) | a::timestamp+(b||' milliseconds')::interval | a + b/86400000 |
| a.AddMinutes(b) | date_add(a, interval b minute) | dateadd(minute, b, a) | a::timestamp+(b||' minute')::interval | | a.AddMinutes(b) | date_add(a, interval b minute) | dateadd(minute, b, a) | a::timestamp+(b||' minute')::interval | a + b/1440 |
| a.AddMonths(b) | date_add(a, interval b month) | dateadd(month, b, a) | a::timestamp+(b||' month')::interval | | a.AddMonths(b) | date_add(a, interval b month) | dateadd(month, b, a) | a::timestamp+(b||' month')::interval | add_months(a,b) |
| a.AddSeconds(b) | date_add(a, interval b second) | dateadd(second, b, a) | a::timestamp+(b||' second')::interval | | a.AddSeconds(b) | date_add(a, interval b second) | dateadd(second, b, a) | a::timestamp+(b||' second')::interval | a + b/86400 |
| a.AddTicks(b) | date_add(a, interval b/10 microsecond) | dateadd(millisecond, b / 10000, a) | a::timestamp+(b||' microseconds')::interval | | a.AddTicks(b) | date_add(a, interval b/10 microsecond) | dateadd(millisecond, b / 10000, a) | a::timestamp+(b||' microseconds')::interval | a + b/86400000000 |
| a.AddYears(b) | date_add(a, interval b year) | dateadd(year, b, a) | a::timestamp+(b||' year')::interval | | a.AddYears(b) | date_add(a, interval b year) | dateadd(year, b, a) | a::timestamp+(b||' year')::interval | add_months(a,b*12) |
| a.Date | cast(date_format(a, '%Y-%m-%d') as datetime) | convert(char(10),a,120) | a::date | | a.Date | cast(date_format(a, '%Y-%m-%d') as datetime) | convert(char(10),a,120) | a::date | trunc(a) |
| a.Day | dayofmonth(a) | datepart(day, a) | extract(day from a::timestamp) | | a.Day | dayofmonth(a) | datepart(day, a) | extract(day from a::timestamp) | cast(to_char(a,'DD') as number) |
| a.DayOfWeek | dayofweek(a) | datepart(weekday, a) - 1 | extract(dow from a::timestamp) | | a.DayOfWeek | dayofweek(a) | datepart(weekday, a) - 1 | extract(dow from a::timestamp) | case when to_char(a)='7' then 0 else cast(to_char(a) as number) end |
| a.DayOfYear | dayofyear(a) | datepart(dayofyear, a) | extract(doy from a::timestamp) | | a.DayOfYear | dayofyear(a) | datepart(dayofyear, a) | extract(doy from a::timestamp) | cast(to_char(a,'DDD') as number) |
| a.Hour | hour(a) | datepart(hour, a) | extract(hour from a::timestamp) | | a.Hour | hour(a) | datepart(hour, a) | extract(hour from a::timestamp) | cast(to_char(a,'HH24') as number) |
| a.Millisecond | floor(microsecond(a) / 1000) | datepart(millisecond, a) | extract(milliseconds from a::timestamp)-extract(second from a::timestamp)*1000 | | a.Millisecond | floor(microsecond(a) / 1000) | datepart(millisecond, a) | extract(milliseconds from a::timestamp)-extract(second from a::timestamp)*1000 | cast(to_char(a,'FF3') as number) |
| a.Minute | minute(a) | datepart(minute, a) | extract(minute from a::timestamp) | | a.Minute | minute(a) | datepart(minute, a) | extract(minute from a::timestamp) | cast(to_char(a,'MI') as number) |
| a.Month | month(a) | datepart(month, a) | extract(month from a::timestamp) | | a.Month | month(a) | datepart(month, a) | extract(month from a::timestamp) | cast(to_char(a,'FF3') as number) |
| a.Second | second(a) | datepart(second, a) | extract(second from a::timestamp) | | a.Second | second(a) | datepart(second, a) | extract(second from a::timestamp) | cast(to_char(a,'SS') as number) |
| a.Subtract(b) | timestampdiff(microsecond, b, a) | datediff(millisecond, b, a) * 1000 | (extract(epoch from a::timestamp-b::timestamp)*1000000) | | a.Subtract(b) | timestampdiff(microsecond, b, a) | datediff(millisecond, b, a) * 1000 | (extract(epoch from a::timestamp-b::timestamp)*1000000) | a - b |
| a.Ticks | timestampdiff(microsecond, '0001-1-1', a) * 10 | datediff(millisecond, '1970-1-1', a) * 10000 + 621355968000000000 | extract(epoch from a::timestamp)*10000000+621355968000000000 | | a.Ticks | timestampdiff(microsecond, '0001-1-1', a) * 10 | datediff(millisecond, '1970-1-1', a) * 10000 + 621355968000000000 | extract(epoch from a::timestamp)*10000000+621355968000000000 | cast(to_char(a,'FF7') as number) |
| a.TimeOfDay | timestampdiff(microsecond, date_format(a, '%Y-%m-%d'), a) | '1970-1-1 ' + convert(varchar, a, 14) | extract(epoch from a::time)*1000000 | | a.TimeOfDay | timestampdiff(microsecond, date_format(a, '%Y-%m-%d'), a) | '1970-1-1 ' + convert(varchar, a, 14) | extract(epoch from a::time)*1000000 | a - trunc(a) |
| a.Year | year(a) | datepart(year, a) | extract(year from a::timestamp) | 年 | | a.Year | year(a) | datepart(year, a) | extract(year from a::timestamp) | 年 | cast(to_char(a,'YYYY') as number) |
| a.Equals(b) | a = b | a = b | a = b | | a.Equals(b) | a = b | a = b | a = b | a = b |
| a.CompareTo(b) | a - b | a - b | a - b | | a.CompareTo(b) | a - b | a - b | a - b | a - b |
| a.ToString() | date_format(a, '%Y-%m-%d %H:%i:%s.%f') | convert(varchar, a, 121) | to_char(a, 'YYYY-MM-DD HH24:MI:SS.US') | | a.ToString() | date_format(a, '%Y-%m-%d %H:%i:%s.%f') | convert(varchar, a, 121) | to_char(a, 'YYYY-MM-DD HH24:MI:SS.US') | to_char(a,'YYYY-MM-DD HH24:MI:SS.FF6') |
### 时间对象 ### 时间对象
| 表达式 | MySql(微秒) | SqlServer(秒) | PostgreSQL(微秒) | | 表达式 | MySql(微秒) | SqlServer(秒) | PostgreSQL(微秒) | Oracle(Interval day(9) to second(7)) |
| - | - | - | - | | - | - | - | - |
| TimeSpan.Zero | 0 | 0 | - | 0微秒 | | TimeSpan.Zero | 0 | 0 | - | 0微秒 | numtodsinterval(0,'second') |
| TimeSpan.MaxValue | 922337203685477580 | 922337203685477580 | - | | TimeSpan.MaxValue | 922337203685477580 | 922337203685477580 | - | numtodsinterval(233720368.5477580,'second') |
| TimeSpan.MinValue | -922337203685477580 | -922337203685477580 | - | | TimeSpan.MinValue | -922337203685477580 | -922337203685477580 | - | numtodsinterval(-233720368.5477580,'second') |
| TimeSpan.Compare(a, b) | a - b | a - b | - | | TimeSpan.Compare(a, b) | a - b | a - b | - | extract(day from (a-b)) |
| TimeSpan.Equals(a, b) | a = b | a = b | - | | TimeSpan.Equals(a, b) | a = b | a = b | - | a = b |
| TimeSpan.FromDays(a) | a * 1000000 * 60 * 60 * 24 | a * 1000000 * 60 * 60 * 24 | - | | TimeSpan.FromDays(a) | a * 1000000 * 60 * 60 * 24 | a * 1000000 * 60 * 60 * 24 | - | numtodsinterval(a*86400,'second') |
| TimeSpan.FromHours(a) | a * 1000000 * 60 * 60 | a * 1000000 * 60 * 60 | - | | TimeSpan.FromHours(a) | a * 1000000 * 60 * 60 | a * 1000000 * 60 * 60 | - | numtodsinterval(a*3600,'second') |
| TimeSpan.FromMilliseconds(a) | a * 1000 | a * 1000 | - | | TimeSpan.FromMilliseconds(a) | a * 1000 | a * 1000 | - | numtodsinterval(a/1000,'second') |
| TimeSpan.FromMinutes(a) | a * 1000000 * 60 | a * 1000000 * 60 | - | | TimeSpan.FromMinutes(a) | a * 1000000 * 60 | a * 1000000 * 60 | - | numtodsinterval(a*60,'second') |
| TimeSpan.FromSeconds(a) | a * 1000000 | a * 1000000 | - | | TimeSpan.FromSeconds(a) | a * 1000000 | a * 1000000 | - | numtodsinterval(a,'second') |
| TimeSpan.FromTicks(a) | a / 10 | a / 10 | - | | TimeSpan.FromTicks(a) | a / 10 | a / 10 | - | numtodsinterval(a/10000000,'second') |
| a.Add(b) | a + b | a + b | - | | a.Add(b) | a + b | a + b | - | a + b |
| a.Subtract(b) | a - b | a - b | - | | a.Subtract(b) | a - b | a - b | - | a - b |
| a.CompareTo(b) | a - b | a - b | - | | a.CompareTo(b) | a - b | a - b | - | extract(day from (a-b)) |
| a.Days | a div (1000000 * 60 * 60 * 24) | a div (1000000 * 60 * 60 * 24) | - | | a.Days | a div (1000000 * 60 * 60 * 24) | a div (1000000 * 60 * 60 * 24) | - | extract(day from a) |
| a.Hours | a div (1000000 * 60 * 60) mod 24 | a div (1000000 * 60 * 60) mod 24 | - | | a.Hours | a div (1000000 * 60 * 60) mod 24 | a div (1000000 * 60 * 60) mod 24 | - | extract(hour from a) |
| a.Milliseconds | a div 1000 mod 1000 | a div 1000 mod 1000 | - | | a.Milliseconds | a div 1000 mod 1000 | a div 1000 mod 1000 | - | cast(substr(extract(second from a)-floor(extract(second from a)),2,3) as number) |
| a.Seconds | a div 1000000 mod 60 | a div 1000000 mod 60 | - | | a.Seconds | a div 1000000 mod 60 | a div 1000000 mod 60 | - | extract(second from a) |
| a.Ticks | a * 10 | a * 10 | - | | a.Ticks | a * 10 | a * 10 | - | (extract(day from a)*86400+extract(hour from a)*3600+extract(minute from a)*60+extract(second from a))*10000000 |
| a.TotalDays | a / (1000000 * 60 * 60 * 24) | a / (1000000 * 60 * 60 * 24) | - | | a.TotalDays | a / (1000000 * 60 * 60 * 24) | a / (1000000 * 60 * 60 * 24) | - | extract(day from a) |
| a.TotalHours | a / (1000000 * 60 * 60) | a / (1000000 * 60 * 60) | - | | a.TotalHours | a / (1000000 * 60 * 60) | a / (1000000 * 60 * 60) | - | (extract(day from a)*24+extract(hour from a)) |
| a.TotalMilliseconds | a / 1000 | a / 1000 | - | | a.TotalMilliseconds | a / 1000 | a / 1000 | - | (extract(day from a)*86400+extract(hour from a)*3600+extract(minute from a)*60+extract(second from a))*1000 |
| a.TotalMinutes | a / (1000000 * 60) | a / (1000000 * 60) | - | | a.TotalMinutes | a / (1000000 * 60) | a / (1000000 * 60) | - | | (extract(day from a)*1440+extract(hour from a)*60+extract(minute from a)) |
| a.TotalSeconds | a / 1000000 | a / 1000000 | - | | a.TotalSeconds | a / 1000000 | a / 1000000 | - | (extract(day from a)*86400+extract(hour from a)*3600+extract(minute from a)*60+extract(second from a)) |
| a.Equals(b) | a = b | a = b | - | | a.Equals(b) | a = b | a = b | - | a = b |
| a.ToString() | cast(a as varchar) | cast(a as varchar) | - | | a.ToString() | cast(a as varchar) | cast(a as varchar) | - | to_char(a) |
### 数学函数 ### 数学函数
| 表达式 | MySql | SqlServer | PostgreSQL | | 表达式 | MySql | SqlServer | PostgreSQL |
| - | - | - | - | | - | - | - | - |
| Math.Abs(a) | abs(a) | abs(a) | abs(a) | | Math.Abs(a) | abs(a) | abs(a) | abs(a) |
| Math.Acos(a) | acos(a) | acos(a) | acos(a) | | Math.Acos(a) | acos(a) | acos(a) | acos(a) | acos(a) |
| Math.Asin(a) | asin(a) | asin(a) | asin(a) | | Math.Asin(a) | asin(a) | asin(a) | asin(a) | asin(a) |
| Math.Atan(a) | atan(a) | atan(a) | (atan(a)) | | Math.Atan(a) | atan(a) | atan(a) | atan(a) | atan(a) |
| Math.Atan2(a, b) | atan2(a, b) | atan2(a, b) | atan2(a, b) | | Math.Atan2(a, b) | atan2(a, b) | atan2(a, b) | atan2(a, b) | - |
| Math.Ceiling(a) | ceiling(a) | ceiling(a) | ceiling(a) | | Math.Ceiling(a) | ceiling(a) | ceiling(a) | ceiling(a) | ceil(a) |
| Math.Cos(a) | cos(a) | cos(a) | cos(a) | | Math.Cos(a) | cos(a) | cos(a) | cos(a) | cos(a) |
| Math.Exp(a) | exp(a) | exp(a) | exp(a) | | Math.Exp(a) | exp(a) | exp(a) | exp(a) | exp(a) |
| Math.Floor(a) | floor(a) | floor(a) | floor(a) | | Math.Floor(a) | floor(a) | floor(a) | floor(a) | floor(a) |
| Math.Log(a) | log(a) | log(a) | log(a) | | Math.Log(a) | log(a) | log(a) | log(a) | log(e,a) |
| Math.Log10(a) | log10(a) | log10(a) | log10(a) | | Math.Log10(a) | log10(a) | log10(a) | log10(a) | log(10,a) |
| Math.PI(a) | 3.1415926535897931 | 3.1415926535897931 | 3.1415926535897931 | | Math.PI(a) | 3.1415926535897931 | 3.1415926535897931 | 3.1415926535897931 | 3.1415926535897931 |
| Math.Pow(a, b) | pow(a, b) | power(a, b) | pow(a, b) | | Math.Pow(a, b) | pow(a, b) | power(a, b) | pow(a, b) | power(a, b) |
| Math.Round(a, b) | round(a, b) | round(a, b) | round(a, b) | | Math.Round(a, b) | round(a, b) | round(a, b) | round(a, b) | round(a, b) |
| Math.Sign(a) | sign(a) | sign(a) | sign(a) | | Math.Sign(a) | sign(a) | sign(a) | sign(a) | sign(a) |
| Math.Sin(a) | sin(a) | sin(a) | sin(a) | | Math.Sin(a) | sin(a) | sin(a) | sin(a) | sin(a) |
| Math.Sqrt(a) | sqrt(a) | sqrt(a) | sqrt(a) | | Math.Sqrt(a) | sqrt(a) | sqrt(a) | sqrt(a) | sqrt(a) |
| Math.Tan(a) | tan(a) | tan(a) | tan(a) | | Math.Tan(a) | tan(a) | tan(a) | tan(a) | tan(a) |
| Math.Truncate(a) | truncate(a, 0) | floor(a) | trunc(a, 0) | | Math.Truncate(a) | truncate(a, 0) | floor(a) | trunc(a, 0) | trunc(a, 0) |
### 类型转换 ### 类型转换
| 表达式 | MySql | SqlServer | PostgreSQL | | 表达式 | MySql | SqlServer | PostgreSQL | Oracle |
| - | - | - | - | | - | - | - | - |
| Convert.ToBoolean(a) | a not in ('0','false') | a not in ('0','false') | a::varchar not in ('0','false','f','no') | | Convert.ToBoolean(a) | a not in ('0','false') | a not in ('0','false') | a::varchar not in ('0','false','f','no') | - |
| Convert.ToByte(a) | cast(a as unsigned) | cast(a as tinyint) | a::int2 | | Convert.ToByte(a) | cast(a as unsigned) | cast(a as tinyint) | a::int2 | cast(a as number) |
| Convert.ToChar(a) | substr(cast(a as char),1,1) | substring(cast(a as nvarchar),1,1) | substr(a::char,1,1) | | Convert.ToChar(a) | substr(cast(a as char),1,1) | substring(cast(a as nvarchar),1,1) | substr(a::char,1,1) | substr(to_char(a),1,1) |
| Convert.ToDateTime(a) | cast(a as datetime) | cast(a as datetime) | a::timestamp | | Convert.ToDateTime(a) | cast(a as datetime) | cast(a as datetime) | a::timestamp | to_timestamp(a,'YYYY-MM-DD HH24:MI:SS.FF6') |
| Convert.ToDecimal(a) | cast(a as decimal(36,18)) | cast(a as decimal(36,19)) | a::numeric | | Convert.ToDecimal(a) | cast(a as decimal(36,18)) | cast(a as decimal(36,19)) | a::numeric | cast(a as number) |
| Convert.ToDouble(a) | cast(a as decimal(32,16)) | cast(a as decimal(32,16)) | a::float8 | | Convert.ToDouble(a) | cast(a as decimal(32,16)) | cast(a as decimal(32,16)) | a::float8 | cast(a as number) |
| Convert.ToInt16(a) | cast(a as signed) | cast(a as smallint) | a::int2 | | Convert.ToInt16(a) | cast(a as signed) | cast(a as smallint) | a::int2 | cast(a as number) |
| Convert.ToInt32(a) | cast(a as signed) | cast(a as int) | a::int4 | | Convert.ToInt32(a) | cast(a as signed) | cast(a as int) | a::int4 | cast(a as number) |
| Convert.ToInt64(a) | cast(a as signed) | cast(a as bigint) | a::int8 | | Convert.ToInt64(a) | cast(a as signed) | cast(a as bigint) | a::int8 | cast(a as number) |
| Convert.ToSByte(a) | cast(a as signed) | cast(a as tinyint) | a::int2 | | Convert.ToSByte(a) | cast(a as signed) | cast(a as tinyint) | a::int2 | cast(a as number) |
| Convert.ToString(a) | cast(a as decimal(14,7)) | cast(a as decimal(14,7)) | a::float4 | | Convert.ToString(a) | cast(a as decimal(14,7)) | cast(a as decimal(14,7)) | a::float4 | to_char(a) |
| Convert.ToSingle(a) | cast(a as char) | cast(a as nvarchar) | a::varchar | | Convert.ToSingle(a) | cast(a as char) | cast(a as nvarchar) | a::varchar | cast(a as number) |
| Convert.ToUInt16(a) | cast(a as unsigned) | cast(a as smallint) | a::int2 | | Convert.ToUInt16(a) | cast(a as unsigned) | cast(a as smallint) | a::int2 | cast(a as number) |
| Convert.ToUInt32(a) | cast(a as unsigned) | cast(a as int) | a::int4 | | Convert.ToUInt32(a) | cast(a as unsigned) | cast(a as int) | a::int4 | cast(a as number) |
| Convert.ToUInt64(a) | cast(a as unsigned) | cast(a as bigint) | a::int8 | | Convert.ToUInt64(a) | cast(a as unsigned) | cast(a as bigint) | a::int8 | cast(a as number) |

11
Docs/generator.md
View File

@ -14,8 +14,17 @@
```csharp ```csharp
//定义 mysql FreeSql //定义 mysql FreeSql
var mysql = new FreeSql.FreeSqlBuilder() IFreeSql fsql = new FreeSql.FreeSqlBuilder()
.UseConnectionString(FreeSql.DataType.MySql, "Data Source=127.0.0.1;Port=3306;User ID=root;Password=root;Initial Catalog=cccddd;Charset=utf8;SslMode=none;Max pool size=10") .UseConnectionString(FreeSql.DataType.MySql, "Data Source=127.0.0.1;Port=3306;User ID=root;Password=root;Initial Catalog=cccddd;Charset=utf8;SslMode=none;Max pool size=10")
.UseAutoSyncStructure(true)
.UseMonitorCommand(
cmd => {
Console.WriteLine(cmd.CommandText);
}, //监听SQL命令对象，在执行前
(cmd, traceLog) => {
Console.WriteLine(traceLog);
}) //监听SQL命令对象，在执行后
.Build(); .Build();
//创建模板生成类现实 //创建模板生成类现实

66
FreeSql.Tests/Oracle/OracleExpression/StringTest.cs
View File

@ -631,45 +631,45 @@ namespace FreeSql.Tests.OracleExpression {
} }
[Fact] [Fact]
public void CompareTo() { public void CompareTo() {
//var data = new List<object>(); var data = new List<object>();
//data.Add(select.Where(a => a.Title.CompareTo(a.Title) == 0).ToList()); data.Add(select.Where(a => a.Title.CompareTo(a.Title) == 0).ToList());
//data.Add(select.Where(a => a.Title.CompareTo(a.Title) > 0).ToList()); data.Add(select.Where(a => a.Title.CompareTo(a.Title) > 0).ToList());
//data.Add(select.Where(a => a.Title.CompareTo(a.Title + 1) == 0).ToList()); data.Add(select.Where(a => a.Title.CompareTo(a.Title + 1) == 0).ToList());
//data.Add(select.Where(a => a.Title.CompareTo(a.Title + a.Type.Name) == 0).ToList()); data.Add(select.Where(a => a.Title.CompareTo(a.Title + a.Type.Name) == 0).ToList());
////SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5 //SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5
////FROM `tb_topic` a //FROM `tb_topic` a
////WHERE (strcmp(a.`Title`, a.`Title`) = 0); //WHERE (strcmp(a.`Title`, a.`Title`) = 0);
////SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5 //SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5
////FROM `tb_topic` a //FROM `tb_topic` a
////WHERE (strcmp(a.`Title`, a.`Title`) > 0); //WHERE (strcmp(a.`Title`, a.`Title`) > 0);
////SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5 //SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5
////FROM `tb_topic` a //FROM `tb_topic` a
////WHERE (strcmp(a.`Title`, concat(a.`Title`, 1)) = 0); //WHERE (strcmp(a.`Title`, concat(a.`Title`, 1)) = 0);
////SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a.`Title` as7, a.`CreateTime` as8 //SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a.`Title` as7, a.`CreateTime` as8
////FROM `tb_topic` a, `TestTypeInfo` a__Type //FROM `tb_topic` a, `TestTypeInfo` a__Type
////WHERE (strcmp(a.`Title`, concat(a.`Title`, a__Type.`Name`)) = 0); //WHERE (strcmp(a.`Title`, concat(a.`Title`, a__Type.`Name`)) = 0);
//data.Add(select.Where(a => (a.Title + "aaa").CompareTo("aaa") == 0).ToList()); data.Add(select.Where(a => (a.Title + "aaa").CompareTo("aaa") == 0).ToList());
//data.Add(select.Where(a => (a.Title + "aaa").CompareTo(a.Title) > 0).ToList()); data.Add(select.Where(a => (a.Title + "aaa").CompareTo(a.Title) > 0).ToList());
//data.Add(select.Where(a => (a.Title + "aaa").CompareTo(a.Title + 1) == 0).ToList()); data.Add(select.Where(a => (a.Title + "aaa").CompareTo(a.Title + 1) == 0).ToList());
//data.Add(select.Where(a => (a.Title + "aaa").CompareTo(a.Type.Name) == 0).ToList()); data.Add(select.Where(a => (a.Title + "aaa").CompareTo(a.Type.Name) == 0).ToList());
////SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5 //SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5
////FROM `tb_topic` a //FROM `tb_topic` a
////WHERE (strcmp(concat(a.`Title`, 'aaa'), 'aaa') = 0); //WHERE (strcmp(concat(a.`Title`, 'aaa'), 'aaa') = 0);
////SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5 //SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5
////FROM `tb_topic` a //FROM `tb_topic` a
////WHERE (strcmp(concat(a.`Title`, 'aaa'), a.`Title`) > 0); //WHERE (strcmp(concat(a.`Title`, 'aaa'), a.`Title`) > 0);
////SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5 //SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5
////FROM `tb_topic` a //FROM `tb_topic` a
////WHERE (strcmp(concat(a.`Title`, 'aaa'), concat(a.`Title`, 1)) = 0); //WHERE (strcmp(concat(a.`Title`, 'aaa'), concat(a.`Title`, 1)) = 0);
////SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a.`Title` as7, a.`CreateTime` as8 //SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a.`Title` as7, a.`CreateTime` as8
////FROM `tb_topic` a, `TestTypeInfo` a__Type //FROM `tb_topic` a, `TestTypeInfo` a__Type
////WHERE (strcmp(concat(a.`Title`, 'aaa'), a__Type.`Name`) = 0) //WHERE (strcmp(concat(a.`Title`, 'aaa'), a__Type.`Name`) = 0)
} }
[Fact] [Fact]

4
FreeSql.sln
View File

@ -9,9 +9,13 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "FreeSql.Tests", "FreeSql.Te
EndProject EndProject
Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Docs", "Docs", "{C6A74E2A-6660-473D-8852-B1D8348DB4E9}" Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Docs", "Docs", "{C6A74E2A-6660-473D-8852-B1D8348DB4E9}"
ProjectSection(SolutionItems) = preProject ProjectSection(SolutionItems) = preProject
Docs\1. quickstart.md = Docs\1. quickstart.md
Docs\2 入门.md = Docs\2 入门.md
Docs\2.1 安装FreeSql = Docs\2.1 安装FreeSql
Docs\codefirst.md = Docs\codefirst.md Docs\codefirst.md = Docs\codefirst.md
Docs\dbfirst.md = Docs\dbfirst.md Docs\dbfirst.md = Docs\dbfirst.md
Docs\delete.md = Docs\delete.md Docs\delete.md = Docs\delete.md
Docs\expression.md = Docs\expression.md
Docs\generator.md = Docs\generator.md Docs\generator.md = Docs\generator.md
Docs\insert.md = Docs\insert.md Docs\insert.md = Docs\insert.md
readme.md = readme.md readme.md = readme.md

4
FreeSql/Oracle/OracleExpression.cs
View File

@ -183,7 +183,7 @@ namespace FreeSql.Oracle {
} }
return left; return left;
case "Replace": return $"replace({left}, {getExp(exp.Arguments[0])}, {getExp(exp.Arguments[1])})"; case "Replace": return $"replace({left}, {getExp(exp.Arguments[0])}, {getExp(exp.Arguments[1])})";
//case "CompareTo": return $"strcmp({left}, {getExp(exp.Arguments[0])})"; case "CompareTo": return $"case when {left} = {getExp(exp.Arguments[0])} then 0 when {left} > {getExp(exp.Arguments[0])} then 1 else -1 end";
case "Equals": return $"({left} = {getExp(exp.Arguments[0])})"; case "Equals": return $"({left} = {getExp(exp.Arguments[0])})";
} }
} }
@ -245,7 +245,7 @@ namespace FreeSql.Oracle {
case "AddMonths": return $"add_months({left},{args1})"; case "AddMonths": return $"add_months({left},{args1})";
case "AddSeconds": return $"({left}+({args1})/86400)"; case "AddSeconds": return $"({left}+({args1})/86400)";
case "AddTicks": return $"({left}+({args1})/864000000000)"; case "AddTicks": return $"({left}+({args1})/864000000000)";
case "AddYears": return $"add_months({left},12)"; case "AddYears": return $"add_months({left},({args1})*12)";
case "Subtract": case "Subtract":
if (exp.Arguments[0].Type.FullName == "System.DateTime" || exp.Arguments[0].Type.GenericTypeArguments.FirstOrDefault()?.FullName == "System.DateTime") if (exp.Arguments[0].Type.FullName == "System.DateTime" || exp.Arguments[0].Type.GenericTypeArguments.FirstOrDefault()?.FullName == "System.DateTime")
return $"({args1}-{left})"; return $"({args1}-{left})";

2
readme.md
View File

@ -4,7 +4,7 @@ FreeSql 是轻量化、可扩展和跨平台版的 .NETStandard 数据访问技
FreeSql 可用作对象关系映射程序 (O/RM)，以便于开发人员能够使用 .NETStandard 对象来处理数据库，不必经常编写大部分数据访问代码。 FreeSql 可用作对象关系映射程序 (O/RM)，以便于开发人员能够使用 .NETStandard 对象来处理数据库，不必经常编写大部分数据访问代码。
FreeSql 支持 MySql/SqlServer/PostgreSQL 数据库技术实现。 FreeSql 支持 MySql/SqlServer/PostgreSQL/Oracle 数据库技术实现。
FreeSql 打造 .NETCore 最方便的 ORM，dbfirst codefirst混合使用，codefirst模式下的开发阶段，建好实体不用执行任何操作即能创建表和修改字段，dbfirst模式下提供api+模板自定义生成代码，作者提供了3种模板,您可以持续关注或者参与给出宝贵意见，QQ群：4336577。 FreeSql 打造 .NETCore 最方便的 ORM，dbfirst codefirst混合使用，codefirst模式下的开发阶段，建好实体不用执行任何操作即能创建表和修改字段，dbfirst模式下提供api+模板自定义生成代码，作者提供了3种模板,您可以持续关注或者参与给出宝贵意见，QQ群：4336577。