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Optimize single table read performance

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2881099
2022-06-01 14:21:53 +08:00
parent 7290109734
commit 105947c2ed
9 changed files with 139 additions and 219 deletions
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183
FreeSql/FreeSql.xml
View File

@ -3303,177 +3303,6 @@
<param name="parms"></param>
<returns></returns>
</member>
<member name="M:FreeSql.IAdo.ExecuteConnectTestAsync(System.Int32,System.Threading.CancellationToken)">
<summary>
测试数据库是否连接正确，本方法执行如下命令：<para></para>
MySql/SqlServer/PostgreSQL/达梦/人大金仓/神通: SELECT 1<para></para>
Oracle: SELECT 1 FROM dual<para></para>
</summary>
<param name="commandTimeout">命令超时设置(秒)</param>
<param name="cancellationToken"></param>
<returns>true: 成功, false: 失败</returns>
</member>
<member name="M:FreeSql.IAdo.ExecuteReaderAsync(System.Func{FreeSql.Internal.Model.FetchCallbackArgs{System.Data.Common.DbDataReader},System.Threading.Tasks.Task},System.Data.CommandType,System.String,System.Data.Common.DbParameter[],System.Threading.CancellationToken)">
<summary>
查询，若使用读写分离，查询【从库】条件cmdText.StartsWith("SELECT ")，否则查询【主库】
</summary>
<param name="readerHander"></param>
<param name="cmdType"></param>
<param name="cmdText"></param>
<param name="cmdParms"></param>
<param name="cancellationToken"></param>
</member>
<member name="M:FreeSql.IAdo.ExecuteReaderAsync(System.Func{FreeSql.Internal.Model.FetchCallbackArgs{System.Data.Common.DbDataReader},System.Threading.Tasks.Task},System.String,System.Object,System.Threading.CancellationToken)">
<summary>
查询，ExecuteReaderAsync(dr => {}, "select * from user where age > @age", new { age = 25 })<para></para>
提示：parms 参数还可以传 Dictionary&lt;string, object&gt;
</summary>
<param name="readerHander"></param>
<param name="cmdText"></param>
<param name="parms"></param>
<param name="cancellationToken"></param>
</member>
<member name="M:FreeSql.IAdo.ExecuteArrayAsync(System.Data.CommandType,System.String,System.Data.Common.DbParameter[],System.Threading.CancellationToken)">
<summary>
查询
</summary>
<param name="cmdType"></param>
<param name="cmdText"></param>
<param name="cmdParms"></param>
<param name="cancellationToken"></param>
</member>
<member name="M:FreeSql.IAdo.ExecuteArrayAsync(System.String,System.Object,System.Threading.CancellationToken)">
<summary>
查询，ExecuteArrayAsync("select * from user where age > @age", new { age = 25 })<para></para>
提示：parms 参数还可以传 Dictionary&lt;string, object&gt;
</summary>
<param name="cmdText"></param>
<param name="parms"></param>
<param name="cancellationToken"></param>
<returns></returns>
</member>
<member name="M:FreeSql.IAdo.ExecuteDataSetAsync(System.Data.CommandType,System.String,System.Data.Common.DbParameter[],System.Threading.CancellationToken)">
<summary>
查询
</summary>
<param name="cmdType"></param>
<param name="cmdText"></param>
<param name="cmdParms"></param>
<param name="cancellationToken"></param>
</member>
<member name="M:FreeSql.IAdo.ExecuteDataSetAsync(System.String,System.Object,System.Threading.CancellationToken)">
<summary>
查询，ExecuteDataSetAsync("select * from user where age > @age; select 2", new { age = 25 })<para></para>
提示：parms 参数还可以传 Dictionary&lt;string, object&gt;
</summary>
<param name="cmdText"></param>
<param name="parms"></param>
<param name="cancellationToken"></param>
<returns></returns>
</member>
<member name="M:FreeSql.IAdo.ExecuteDataTableAsync(System.Data.CommandType,System.String,System.Data.Common.DbParameter[],System.Threading.CancellationToken)">
<summary>
查询
</summary>
<param name="cmdType"></param>
<param name="cmdText"></param>
<param name="cmdParms"></param>
<param name="cancellationToken"></param>
</member>
<member name="M:FreeSql.IAdo.ExecuteDataTableAsync(System.String,System.Object,System.Threading.CancellationToken)">
<summary>
查询，ExecuteDataTableAsync("select * from user where age > @age", new { age = 25 })<para></para>
提示：parms 参数还可以传 Dictionary&lt;string, object&gt;
</summary>
<param name="cmdText"></param>
<param name="parms"></param>
<param name="cancellationToken"></param>
<returns></returns>
</member>
<member name="M:FreeSql.IAdo.ExecuteNonQueryAsync(System.Data.CommandType,System.String,System.Data.Common.DbParameter[],System.Threading.CancellationToken)">
<summary>
在【主库】执行
</summary>
<param name="cmdType"></param>
<param name="cmdText"></param>
<param name="cmdParms"></param>
<param name="cancellationToken"></param>
</member>
<member name="M:FreeSql.IAdo.ExecuteNonQueryAsync(System.String,System.Object,System.Threading.CancellationToken)">
<summary>
在【主库】执行，ExecuteNonQueryAsync("delete from user where age > @age", new { age = 25 })<para></para>
提示：parms 参数还可以传 Dictionary&lt;string, object&gt;
</summary>
<param name="cmdText"></param>
<param name="parms"></param>
<param name="cancellationToken"></param>
<returns></returns>
</member>
<member name="M:FreeSql.IAdo.ExecuteScalarAsync(System.Data.CommandType,System.String,System.Data.Common.DbParameter[],System.Threading.CancellationToken)">
<summary>
在【主库】执行
</summary>
<param name="cmdType"></param>
<param name="cmdText"></param>
<param name="cmdParms"></param>
<param name="cancellationToken"></param>
</member>
<member name="M:FreeSql.IAdo.ExecuteScalarAsync(System.String,System.Object,System.Threading.CancellationToken)">
<summary>
在【主库】执行，ExecuteScalarAsync("select 1 from user where age > @age", new { age = 25 })<para></para>
提示：parms 参数还可以传 Dictionary&lt;string, object&gt;
</summary>
<param name="cmdText"></param>
<param name="parms"></param>
<param name="cancellationToken"></param>
<returns></returns>
</member>
<member name="M:FreeSql.IAdo.QueryAsync``1(System.Data.CommandType,System.String,System.Data.Common.DbParameter[],System.Threading.CancellationToken)">
<summary>
执行SQL返回对象集合，QueryAsync&lt;User&gt;("select * from user where age > @age", new SqlParameter { ParameterName = "age", Value = 25 })
</summary>
<typeparam name="T"></typeparam>
<param name="cmdType"></param>
<param name="cmdText"></param>
<param name="cmdParms"></param>
<param name="cancellationToken"></param>
<returns></returns>
</member>
<member name="M:FreeSql.IAdo.QueryAsync``1(System.String,System.Object,System.Threading.CancellationToken)">
<summary>
执行SQL返回对象集合，QueryAsync&lt;User&gt;("select * from user where age > @age", new { age = 25 })<para></para>
提示：parms 参数还可以传 Dictionary&lt;string, object&gt;
</summary>
<typeparam name="T"></typeparam>
<param name="cmdText"></param>
<param name="parms"></param>
<param name="cancellationToken"></param>
<returns></returns>
</member>
<member name="M:FreeSql.IAdo.QueryAsync``2(System.Data.CommandType,System.String,System.Data.Common.DbParameter[],System.Threading.CancellationToken)">
<summary>
执行SQL返回对象集合，Query&lt;User&gt;("select * from user where age > @age; select * from address", new SqlParameter { ParameterName = "age", Value = 25 })
</summary>
<typeparam name="T1"></typeparam>
<typeparam name="T2"></typeparam>
<param name="cmdType"></param>
<param name="cmdText"></param>
<param name="cmdParms"></param>
<param name="cancellationToken"></param>
<returns></returns>
</member>
<member name="M:FreeSql.IAdo.QueryAsync``2(System.String,System.Object,System.Threading.CancellationToken)">
<summary>
执行SQL返回对象集合，Query&lt;User, Address&gt;("select * from user where age > @age; select * from address", new { age = 25 })<para></para>
提示：parms 参数还可以传 Dictionary&lt;string, object&gt;
</summary>
<typeparam name="T1"></typeparam>
<typeparam name="T2"></typeparam>
<param name="cmdText"></param>
<param name="parms"></param>
<param name="cancellationToken"></param>
<returns></returns>
</member>
<member name="E:FreeSql.IAop.ParseExpression">
<summary>
可自定义解析表达式
@ -4480,12 +4309,6 @@
<param name="timeout">超时</param>
<returns></returns>
</member>
<member name="M:FreeSql.Internal.ObjectPool.IObjectPool`1.GetAsync">
<summary>
获取资源
</summary>
<returns></returns>
</member>
<member name="M:FreeSql.Internal.ObjectPool.IObjectPool`1.Return(FreeSql.Internal.ObjectPool.Object{`0},System.Boolean)">
<summary>
使用完毕后，归还资源
@ -4561,12 +4384,6 @@
</summary>
<param name="obj">资源对象</param>
</member>
<member name="M:FreeSql.Internal.ObjectPool.IPolicy`1.OnGetAsync(FreeSql.Internal.ObjectPool.Object{`0})">
<summary>
从对象池获取对象成功的时候触发，通过该方法统计或初始化对象
</summary>
<param name="obj">资源对象</param>
</member>
<member name="M:FreeSql.Internal.ObjectPool.IPolicy`1.OnReturn(FreeSql.Internal.ObjectPool.Object{`0})">
<summary>
归还对象给对象池的时候触发

14
FreeSql/Internal/CommonProvider/SelectProvider/Select0Provider.cs
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@ -174,6 +174,20 @@ namespace FreeSql.Internal.CommonProvider
return exp;
}
public static MethodInfo _MethodDataReaderIsDBNull = typeof(DbDataReader).GetMethod("IsDBNull", new Type[] { typeof(int) });
public static Dictionary<Type, MethodInfo> _dicMethodDataReaderGetValue = new Dictionary<Type, MethodInfo>
{
[typeof(bool)] = typeof(DbDataReader).GetMethod("GetBoolean", new Type[] { typeof(int) }),
[typeof(int)] = typeof(DbDataReader).GetMethod("GetInt32", new Type[] { typeof(int) }),
[typeof(long)] = typeof(DbDataReader).GetMethod("GetInt64", new Type[] { typeof(int) }),
[typeof(double)] = typeof(DbDataReader).GetMethod("GetDouble", new Type[] { typeof(int) }),
[typeof(float)] = typeof(DbDataReader).GetMethod("GetFloat", new Type[] { typeof(int) }),
[typeof(decimal)] = typeof(DbDataReader).GetMethod("GetDecimal", new Type[] { typeof(int) }),
[typeof(DateTime)] = typeof(DbDataReader).GetMethod("GetDateTime", new Type[] { typeof(int) }),
[typeof(string)] = typeof(DbDataReader).GetMethod("GetString", new Type[] { typeof(int) }),
//[typeof(Guid)] = typeof(DbDataReader).GetMethod("GetGuid", new Type[] { typeof(int) }) 有些驱动不兼容
};
public static MethodInfo MethodStringContains = typeof(string).GetMethod("Contains", new[] { typeof(string) });
public static MethodInfo MethodStringStartsWith = typeof(string).GetMethod("StartsWith", new[] { typeof(string) });
public static MethodInfo MethodStringEndsWith = typeof(string).GetMethod("EndsWith", new[] { typeof(string) });

12
FreeSql/Internal/CommonProvider/SelectProvider/Select0ProviderReader.cs
View File

@ -748,18 +748,6 @@ namespace FreeSql.Internal.CommonProvider
};
});
}
static MethodInfo _MethodDataReaderIsDBNull = typeof(DbDataReader).GetMethod("IsDBNull", new Type[] { typeof(int) });
static Dictionary<Type, MethodInfo> _dicMethodDataReaderGetValue = new Dictionary<Type, MethodInfo>
{
[typeof(bool)] = typeof(DbDataReader).GetMethod("GetBoolean", new Type[] { typeof(int) }),
[typeof(int)] = typeof(DbDataReader).GetMethod("GetInt32", new Type[] { typeof(int) }),
[typeof(long)] = typeof(DbDataReader).GetMethod("GetInt64", new Type[] { typeof(int) }),
[typeof(double)] = typeof(DbDataReader).GetMethod("GetDouble", new Type[] { typeof(int) }),
[typeof(float)] = typeof(DbDataReader).GetMethod("GetFloat", new Type[] { typeof(int) }),
[typeof(decimal)] = typeof(DbDataReader).GetMethod("GetDecimal", new Type[] { typeof(int) }),
[typeof(DateTime)] = typeof(DbDataReader).GetMethod("GetDateTime", new Type[] { typeof(int) }),
[typeof(string)] = typeof(DbDataReader).GetMethod("GetString", new Type[] { typeof(int) }),
};
protected double InternalAvg(Expression exp)
{