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- 增加 IDbFirst.GetTableByName 方法获取单表信息，包括列详情、主键、唯一键、索引、备注；

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This commit is contained in:
28810
2020-08-11 23:23:54 +08:00
parent da6effcf52
commit 0d832a5a23
33 changed files with 994 additions and 601 deletions
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84
Providers/FreeSql.Provider.Odbc/PostgreSQL/OdbcPostgreSQLDbFirst.cs
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@ -128,11 +128,14 @@ namespace FreeSql.Odbc.PostgreSQL
var tbname = _commonUtils.SplitTableName(name);
if (tbname?.Length == 1) tbname = new[] { "public", tbname[0] };
if (ignoreCase) tbname = tbname.Select(a => a.ToLower()).ToArray();
var sql = $" select 1 from pg_tables a inner join pg_namespace b on b.nspname = a.schemaname where {(ignoreCase ? "lower(b.nspname)" : "b.nspname")} = {_commonUtils.FormatSql("{0}", tbname[0])} and {(ignoreCase ? "lower(a.tablename)" : "a.tablename")} = {_commonUtils.FormatSql("{0}", tbname[1])}";
var sql = $" select 1 from pg_tables a inner join pg_namespace b on b.nspname = a.schemaname where {(ignoreCase ? "lower(b.nspname)" : "b.nspname")}={_commonUtils.FormatSql("{0}", tbname[0])} and {(ignoreCase ? "lower(a.tablename)" : "a.tablename")}={_commonUtils.FormatSql("{0}", tbname[1])}";
return string.Concat(_orm.Ado.ExecuteScalar(CommandType.Text, sql)) == "1";
}
public List<DbTableInfo> GetTablesByDatabase(params string[] database)
public DbTableInfo GetTableByName(string name, bool ignoreCase = true) => GetTables(null, name, ignoreCase)?.FirstOrDefault();
public List<DbTableInfo> GetTablesByDatabase(params string[] database) => GetTables(database, null, false);
public List<DbTableInfo> GetTables(string[] database, string tablename, bool ignoreCase)
{
var olddatabase = "";
var is96 = true;
@ -141,7 +144,15 @@ namespace FreeSql.Odbc.PostgreSQL
olddatabase = conn.Value.Database;
is96 = PgVersionIs96(conn.Value.ServerVersion);
}
var dbs = database == null || database.Any() == false ? new[] { olddatabase } : database;
string[] tbname = null;
string[] dbs = database == null || database.Any() == false ? new[] { olddatabase } : database;
if (string.IsNullOrEmpty(tablename) == false)
{
tbname = _commonUtils.SplitTableName(tablename);
if (tbname?.Length == 1) tbname = new[] { "public", tbname[0] };
if (ignoreCase) tbname = tbname.Select(a => a.ToLower()).ToArray();
dbs = new[] { olddatabase };
}
var tables = new List<DbTableInfo>();
foreach (var db in dbs)
@ -153,7 +164,7 @@ namespace FreeSql.Odbc.PostgreSQL
var loc3 = new Dictionary<string, Dictionary<string, DbColumnInfo>>();
var sql = $@"
select
{(tbname == null ? "" : $"select * from (")}select
b.nspname || '.' || a.tablename,
a.schemaname,
a.tablename ,
@ -179,7 +190,7 @@ inner join pg_namespace b on b.oid = a.relnamespace
left join pg_description d on d.objoid = a.oid and objsubid = 0
where b.nspname not in ('pg_catalog', 'information_schema') and a.relkind in ('m','v')
and b.nspname || '.' || a.relname not in ('public.geography_columns','public.geometry_columns','public.raster_columns','public.raster_overviews')
";
{(tbname == null ? "" : $") ft_dbf where {(ignoreCase ? "lower(schemaname)" : "schemaname")}={_commonUtils.FormatSql("{0}", tbname[0])} and {(ignoreCase ? "lower(tablename)" : "tablename")}={_commonUtils.FormatSql("{0}", tbname[1])}")}";
var ds = _orm.Ado.ExecuteArray(CommandType.Text, sql);
if (ds == null) return loc1;
@ -396,7 +407,9 @@ where {loc8.ToString().Replace("a.table_name", "ns.nspname || '.' || d.relname")
}
}
sql = $@"
if (tbname == null)
{
sql = $@"
select
ns.nspname || '.' || b.relname as table_id,
array(select attname from pg_attribute where attrelid = a.conrelid and attnum = any(a.conkey)) as column_name,
@ -413,39 +426,40 @@ inner join pg_namespace ns on ns.oid = b.relnamespace
inner join pg_namespace ns2 on ns2.oid = c.relnamespace
where {loc8.ToString().Replace("a.table_name", "ns.nspname || '.' || b.relname")}
";
ds = _orm.Ado.ExecuteArray(CommandType.Text, sql);
if (ds == null) return loc1;
ds = _orm.Ado.ExecuteArray(CommandType.Text, sql);
if (ds == null) return loc1;
var fkColumns = new Dictionary<string, Dictionary<string, DbForeignInfo>>();
foreach (object[] row in ds)
{
var table_id = string.Concat(row[0]);
var column = row[1] as string[];
var fk_id = string.Concat(row[2]);
var ref_table_id = string.Concat(row[3]);
var is_foreign_key = string.Concat(row[4]) == "1";
var referenced_column = row[5] as string[];
var referenced_db = string.Concat(row[6]);
var referenced_table = string.Concat(row[7]);
if (loc2.ContainsKey(ref_table_id) == false) continue;
Dictionary<string, DbForeignInfo> loc12 = null;
DbForeignInfo loc13 = null;
if (!fkColumns.TryGetValue(table_id, out loc12))
fkColumns.Add(table_id, loc12 = new Dictionary<string, DbForeignInfo>());
if (!loc12.TryGetValue(fk_id, out loc13))
loc12.Add(fk_id, loc13 = new DbForeignInfo { Table = loc2[table_id], ReferencedTable = loc2[ref_table_id] });
for (int a = 0; a < column.Length; a++)
var fkColumns = new Dictionary<string, Dictionary<string, DbForeignInfo>>();
foreach (object[] row in ds)
{
loc13.Columns.Add(loc3[table_id][column[a]]);
loc13.ReferencedColumns.Add(loc3[ref_table_id][referenced_column[a]]);
var table_id = string.Concat(row[0]);
var column = row[1] as string[];
var fk_id = string.Concat(row[2]);
var ref_table_id = string.Concat(row[3]);
var is_foreign_key = string.Concat(row[4]) == "1";
var referenced_column = row[5] as string[];
var referenced_db = string.Concat(row[6]);
var referenced_table = string.Concat(row[7]);
if (loc2.ContainsKey(ref_table_id) == false) continue;
Dictionary<string, DbForeignInfo> loc12 = null;
DbForeignInfo loc13 = null;
if (!fkColumns.TryGetValue(table_id, out loc12))
fkColumns.Add(table_id, loc12 = new Dictionary<string, DbForeignInfo>());
if (!loc12.TryGetValue(fk_id, out loc13))
loc12.Add(fk_id, loc13 = new DbForeignInfo { Table = loc2[table_id], ReferencedTable = loc2[ref_table_id] });
for (int a = 0; a < column.Length; a++)
{
loc13.Columns.Add(loc3[table_id][column[a]]);
loc13.ReferencedColumns.Add(loc3[ref_table_id][referenced_column[a]]);
}
}
foreach (var table_id in fkColumns.Keys)
foreach (var fk in fkColumns[table_id])
loc2[table_id].ForeignsDict.Add(fk.Key, fk.Value);
}
foreach (var table_id in fkColumns.Keys)
foreach (var fk in fkColumns[table_id])
loc2[table_id].ForeignsDict.Add(fk.Key, fk.Value);
foreach (var table_id in loc3.Keys)
{