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- 修复 DbFirst 当表数量过大时(如 oracle 表数量大于 1000)，可能报错的 bug；

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This commit is contained in:
28810
2019-10-08 23:58:10 +08:00
parent dde6562ef8
commit 47b8cd6d9a
8 changed files with 306 additions and 76 deletions
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45
Providers/FreeSql.Provider.MySql/MySqlDbFirst.cs
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@ -5,6 +5,7 @@ using System;
using System.Collections.Generic;
using System.Data;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;
namespace FreeSql.MySql
@ -170,8 +171,10 @@ where a.table_schema in ({0})", databaseIn);
var ds = _orm.Ado.ExecuteArray(CommandType.Text, sql);
if (ds == null) return loc1;
var loc6 = new List<string>();
var loc66 = new List<string>();
var loc6 = new List<string[]>();
var loc66 = new List<string[]>();
var loc6_1000 = new List<string>();
var loc66_1000 = new List<string>();
foreach (var row in ds)
{
var table_id = string.Concat(row[0]);
@ -190,16 +193,40 @@ where a.table_schema in ({0})", databaseIn);
{
case DbTableType.TABLE:
case DbTableType.VIEW:
loc6.Add(table.Replace("'", "''"));
loc6_1000.Add(table.Replace("'", "''"));
if (loc6_1000.Count >= 500)
{
loc6.Add(loc6_1000.ToArray());
loc6_1000.Clear();
}
break;
case DbTableType.StoreProcedure:
loc66.Add(table.Replace("'", "''"));
loc66_1000.Add(table.Replace("'", "''"));
if (loc66_1000.Count >= 500)
{
loc66.Add(loc66_1000.ToArray());
loc66_1000.Clear();
}
break;
}
}
if (loc6_1000.Count > 0) loc6.Add(loc6_1000.ToArray());
if (loc66_1000.Count > 0) loc66.Add(loc66_1000.ToArray());
if (loc6.Count == 0) return loc1;
var loc8 = "'" + string.Join("','", loc6.ToArray()) + "'";
var loc88 = "'" + string.Join("','", loc66.ToArray()) + "'";
var loc8 = new StringBuilder().Append("(");
for (var loc8idx = 0; loc8idx < loc6.Count; loc8idx++)
{
if (loc8idx > 0) loc8.Append(" OR ");
loc8.Append("a.table_name in (");
for (var loc8idx2 = 0; loc8idx2 < loc6[loc8idx].Length; loc8idx2++)
{
if (loc8idx2 > 0) loc8.Append(",");
loc8.Append($"'{loc6[loc8idx][loc8idx2]}'");
}
loc8.Append(")");
}
loc8.Append(")");
sql = string.Format(@"
select
@ -212,7 +239,7 @@ case when a.is_nullable = 'YES' then 1 else 0 end 'is_nullable',
case when locate('auto_increment', a.extra) > 0 then 1 else 0 end 'is_identity',
a.column_comment 'comment'
from information_schema.columns a
where a.table_schema in ({1}) and a.table_name in ({0})
where a.table_schema in ({1}) and {0}
", loc8, databaseIn);
ds = _orm.Ado.ExecuteArray(CommandType.Text, sql);
if (ds == null) return loc1;
@ -260,7 +287,7 @@ case when a.index_name = 'PRIMARY' then 1 else 0 end 'IsPrimaryKey',
0 'IsClustered',
0 'IsDesc'
from information_schema.statistics a
where a.table_schema in ({1}) and a.table_name in ({0}) and a.index_name <> 'PRIMARY'
where a.table_schema in ({1}) and {0} and a.index_name <> 'PRIMARY'
", loc8, databaseIn);
ds = _orm.Ado.ExecuteArray(CommandType.Text, sql);
if (ds == null) return loc1;
@ -321,7 +348,7 @@ concat(a.referenced_table_schema, '.', a.referenced_table_name) 'ref_table_id',
1 'IsForeignKey',
a.referenced_column_name 'ref_column'
from information_schema.key_column_usage a
where a.constraint_schema in ({1}) and a.table_name in ({0}) and not isnull(position_in_unique_constraint)
where a.constraint_schema in ({1}) and {0} and not isnull(position_in_unique_constraint)
", loc8, databaseIn);
ds = _orm.Ado.ExecuteArray(CommandType.Text, sql);
if (ds == null) return loc1;