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- 优化 MySql StringLength/MaxLength -2 产生 LongText 映射；

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This commit is contained in:
28810
2020-06-06 19:02:41 +08:00
parent 926d8353c1
commit b9948f4508
17 changed files with 311 additions and 165 deletions
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8
Providers/FreeSql.Provider.Odbc/Dameng/OdbcDamengCodeFirst.cs
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@ -310,8 +310,9 @@ and not exists(select 1 from all_constraints where index_name = a.index_name and
continue;
}
var oldpk = _orm.Ado.ExecuteScalar(CommandType.Text, _commonUtils.FormatSql(@" select constraint_name from user_constraints where owner={0} and table_name={1} and constraint_type='P'", tbname))?.ToString();
if (string.IsNullOrEmpty(oldpk) == false)
sb.Append("execute immediate 'ALTER TABLE ").Append(_commonUtils.QuoteSqlName($"{tbname[0]}.{tbname[1]}")).Append(" DROP CONSTRAINT ").Append(oldpk).Append("';\r\n");
//if (string.IsNullOrEmpty(oldpk) == false)
// sb.Append("execute immediate 'ALTER TABLE ").Append(_commonUtils.QuoteSqlName($"{tbname[0]}.{tbname[1]}")).Append(" DROP CONSTRAINT ").Append(_commonUtils.QuoteSqlName(oldpk)).Append("';\r\n");
//执行失败(语句1) 试图删除聚集主键
//创建临时表，数据导进临时表，然后删除原表，将临时表改名为原表名
var tablename = tboldname == null ? _commonUtils.QuoteSqlName($"{tbname[0]}.{tbname[1]}") : _commonUtils.QuoteSqlName($"{tboldname[0]}.{tboldname[1]}");
@ -325,7 +326,8 @@ and not exists(select 1 from all_constraints where index_name = a.index_name and
}
if (tb.Primarys.Any())
{
var pkname = primaryKeyName ?? $"{tbname[0]}_{tbname[1]}_pk2";
var pkname = primaryKeyName ?? $"{tbname[0]}_{tbname[1]}_pk1";
if (string.IsNullOrEmpty(oldpk) == false && oldpk == pkname) pkname = $"{pkname}1";
sb.Append(" \r\n CONSTRAINT ").Append(_commonUtils.QuoteSqlName(pkname)).Append(" PRIMARY KEY (");
foreach (var tbcol in tb.Primarys) sb.Append(_commonUtils.QuoteSqlName(tbcol.Attribute.Name)).Append(", ");
sb.Remove(sb.Length - 2, 2).Append("),");