[英]problem using OUTPUT parameter insetad of SCOPE_IDENTITY
我正在尝试在查询中使用OUTPUT
参数而不是SCOPE_IDENTITY
。 我浏览了一些资源,但不明白如何使用它。 例如,我正在添加我现有的代码。
protected string Test(DataRow dataRow, out QueryParamList paramList)
{
paramList = new QueryParamList();
StringBuilder sqlBuilder1 = new StringBuilder();
StringBuilder sqlBuilder2 = new StringBuilder();
for (int i = 0; i < dataRow.ItemArray.Length; i++)
{
if (!IsPrimaryKey(dataRow, i))
{
if (dataRow.ItemArray[i] != DBNull.Value)
{
sqlBuilder1.Append(dataRow.Table.Columns[i].Caption + ",");
sqlBuilder2.Append("@" + dataRow.Table.Columns[i].Caption + ",");
DbType dbType = (DbType)Enum.Parse(typeof(DbType), dataRow.Table.Columns[i].DataType.Name);
paramList.Add(new QueryParamObj() { ParamName = dataRow.Table.Columns[i].Caption, ParamValue = dataRow.ItemArray[i], DBType = dbType });
}
}
}
if (sqlBuilder1.Length > 0) sqlBuilder1.Remove(sqlBuilder1.Length - 1, 1);
if (sqlBuilder2.Length > 0) sqlBuilder2.Remove(sqlBuilder2.Length - 1, 1);
string finalQuery = "Insert Into " + dataRow.Table.TableName + "(" + sqlBuilder1.ToString() + ")" + " values(" + sqlBuilder2.ToString() + ");select SCOPE_IDENTITY()";
return finalQuery;
}
在finalQuery
中,我想进行更改。
基于Using OUTPUT INTO with a simple INSERT statement ,您可以遵循以下模式:
INSERT INTO TableName(..,..)
OUTPUT INSERTED...
VALUES (.., .., ..)
因此,在您的情况下,这应该有效(假设您的身份列是ID
):
string finalQuery = "Insert Into " + dataRow.Table.TableName + "(" + sqlBuilder1.ToString() + ")" + " OUTPUT INSERTED.ID "+ " values(" + sqlBuilder2.ToString() + ");";
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