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- 优化 MySql/Sqlite InsertOrUpdate + IfExistsDoNothing 简化 SQL insert ignore into；#1601

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2881099
2023-08-24 23:56:28 +08:00
parent c6443b4683
commit dfb99d1822
5 changed files with 67 additions and 55 deletions
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29
Providers/FreeSql.Provider.MySql/Curd/MySqlInsertOrUpdate.cs
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@ -87,19 +87,22 @@ namespace FreeSql.MySql.Curd
else
{
if (_tempPrimarys.Any() == false) throw new Exception(CoreStrings.Entity_Must_Primary_Key("fsql.InsertOrUpdate + IfExistsDoNothing + MySql ", _table.CsName));
sql = insert.ToSqlValuesOrSelectUnionAllExtension101(false, (rowd, idx, sb) =>
{
sb.Append(" \r\n FROM dual WHERE NOT EXISTS(");
if (typeof(T1) == typeof(Dictionary<string, object>) && rowd is T1 dict)
sb.Append($"SELECT 1 FROM {_commonUtils.QuoteSqlName(_tableRule(null))} WHERE {_commonUtils.WhereItems<T1>(_tempPrimarys, "", new T1[] { dict })})");
else
sb.Append(
_orm.Select<T1>()
.AsTable((_, __) => _tableRule?.Invoke(__)).AsType(_table.Type)
.DisableGlobalFilter()
.WhereDynamic(rowd)
.Limit(1).ToSql("1").Replace(" \r\n", " \r\n ")).Append(")");
});
sql = insert.ToSqlValuesOrSelectUnionAll();
if (sql?.StartsWith("INSERT INTO ") == true)
sql = $"INSERT IGNORE INTO {sql.Substring(12)}";
//sql = insert.ToSqlValuesOrSelectUnionAllExtension101(false, (rowd, idx, sb) =>
//{
// sb.Append(" \r\n FROM dual WHERE NOT EXISTS(");
// if (typeof(T1) == typeof(Dictionary<string, object>) && rowd is T1 dict)
// sb.Append($"SELECT 1 FROM {_commonUtils.QuoteSqlName(_tableRule(null))} WHERE {_commonUtils.WhereItems<T1>(_tempPrimarys, "", new T1[] { dict })})");
// else
// sb.Append(
// _orm.Select<T1>()
// .AsTable((_, __) => _tableRule?.Invoke(__)).AsType(_table.Type)
// .DisableGlobalFilter()
// .WhereDynamic(rowd)
// .Limit(1).ToSql("1").Replace(" \r\n", " \r\n ")).Append(")");
//});
}
}
if (string.IsNullOrEmpty(sql)) return null;