执行sql查询中返回的sql

我有一个针对sql server数据库运行的查询，该数据库为返回的查询的每一行生成一条sql语句

例如

等

---

在同一脚本中，如何执行查询中返回的sql？

签出

将结果转储到varcharmax或nvarcharmax类型的变量中，然后执行它们

-- Create a terrible, horrible cursor to run the statements
-- You have just now killed a kitten
DECLARE Csr cursor for
SELECT
    P.name AS proc_name
,   schema_name(P.schema_id) AS schemaname
FROM
    sys.procedures P


DECLARE @query varchar(max), @proc_name sysname, @schema sysname

OPEN Csr
FETCH NEXT FROM Csr INTO
    @proc_name, @schema

WHILE (@@fetch_status <> -1)
BEGIN
    IF (@@fetch_status <> -2)
    BEGIN
        BEGIN TRY
            -- build out the drop statement, may not be necc
            SET @query = 'DROP PROCEDURE' + QUOTENAME(@schema) + '.' + QUOTENAME(@proc_name)
            -- Actually run the dynamic query
            EXECUTE(@query)
        END TRY
        BEGIN CATCH
            -- Be good and note what failed, fix this manually
            PRINT 'This query failed'
            PRINT @query
        END CATCH
        FETCH NEXT FROM Csr INTO
            @proc_name, @schema
    END
END

CLOSE Csr
DEALLOCATE Csr

---

一种方法是，您必须遍历结果集并使用。不过很奇怪，您想要完成的是什么？您需要做的是将查询输出转换成一个变量。如果使用的是存储过程，请指定varchar的输出参数。然后，当调用存储过程以生成SQL查询时，只需将varchar变量传递给sp_executesql

-- Create a terrible, horrible cursor to run the statements
-- You have just now killed a kitten
DECLARE Csr cursor for
SELECT
    P.name AS proc_name
,   schema_name(P.schema_id) AS schemaname
FROM
    sys.procedures P


DECLARE @query varchar(max), @proc_name sysname, @schema sysname

OPEN Csr
FETCH NEXT FROM Csr INTO
    @proc_name, @schema

WHILE (@@fetch_status <> -1)
BEGIN
    IF (@@fetch_status <> -2)
    BEGIN
        BEGIN TRY
            -- build out the drop statement, may not be necc
            SET @query = 'DROP PROCEDURE' + QUOTENAME(@schema) + '.' + QUOTENAME(@proc_name)
            -- Actually run the dynamic query
            EXECUTE(@query)
        END TRY
        BEGIN CATCH
            -- Be good and note what failed, fix this manually
            PRINT 'This query failed'
            PRINT @query
        END CATCH
        FETCH NEXT FROM Csr INTO
            @proc_name, @schema
    END
END

CLOSE Csr
DEALLOCATE Csr