Question

EXEC('INSERT INTO T_MyTable('+ @Columns +')
        EXEC ('+ @UpdateString + ')'
        )

其中@Columns包含逗号分隔的列名，而@UpdateString包含

'Update T_OtherTable
Set col1 = 123,
col2 =  456,
col3 = 'nice'
OUTPUT
DELETED.col1 as Old_FirstCol
INSERTED.col1 as New_FirstCol
DELETED.col2 as Old_SecondCol
INSERTED.col2 as New_SecondCol
DELETED.col3 as Old_ThridCol
INSERTED.col3 as New_ThirdCol
Where ID = 1'

我的语法错误不正确。我们不能在EXEC中使用EXEC吗？

Answer 1

您应该将引号转义为双引号，请查看此简化查询：

DECLARE @sql varchar(20) = 'SELECT 1';
EXEC ('EXEC('''+@sql+''')')

Answer 2

我认为问题出现在nice附近的引号中。它应该是：

'Update T_OtherTable
Set col1 = 123,
col2 =  456,
col3 = ''nice''
OUTPUT
DELETED.col1 as Old_FirstCol
INSERTED.col1 as New_FirstCol
DELETED.col2 as Old_SecondCol
INSERTED.col2 as New_SecondCol
DELETED.col3 as Old_ThridCol
INSERTED.col3 as New_ThirdCol
Where ID = 1'

Answer 3

OUTPUT中的列名后缺少逗号，

'Update T_OtherTable
Set col1 = 123,
col2 =  456,
col3 = ''nice''
OUTPUT
DELETED.col1 as Old_FirstCol,
INSERTED.col1 as New_FirstCol,
DELETED.col2 as Old_SecondCol,
INSERTED.col2 as New_SecondCol,
DELETED.col3 as Old_ThridCol,
INSERTED.col3 as New_ThirdCol
Where ID = 1'

最好直接从OUTPUT子句向表中插入数据，然后使用嵌套的EXEC。它应该是，

'Update T_OtherTable
Set col1 = 123,
col2 =  456,
col3 = ''nice''
OUTPUT
DELETED.col1 as Old_FirstCol,
INSERTED.col1 as New_FirstCol,
DELETED.col2 as Old_SecondCol,
INSERTED.col2 as New_SecondCol,
DELETED.col3 as Old_ThridCol,
INSERTED.col3 as New_ThirdCol
INTO T_MyTable('+ @Columns +')
Where ID = 1'

Answer 4

将足够的引号放入@UpdateString：

DECLARE @UpdateString VARCHAR(max) = '''SELECT ''''text'''',1''';
EXEC ('EXEC('+@UpdateString+')')

无法使用EXEC插入表中

4 个答案: