将 sp_executesql 的输出输入 table 列时出现问题（SQL 服务器）

Question

我有一个叫 QUERY_TABLE 的 table。 QUERY_TABLE 包含以下格式的查询（没有动态，WHERE 子句中的参数除外）：

  SELECT
     CASE
         WHEN COUNT(*) > 10 THEN 'Y'
         ELSE 'N'
     END check_ind
FROM
     DATA_TABLE 
WHERE date_y = @DATE_Y AND date_m = @DATE_M

我编写了以下脚本，以获取上述每个查询，运行，并将结果放入另一个 table - CONTROL_LOG_TABLE.

我的问题是结果列 STATUS_IND 应该得到 'Y' 或 'N' 作为值，但出于某种原因我还没有弄清楚，它包含 ' 0'.

感谢您的帮助！

DECLARE 
       @DATE_C DATE,
       @DATE_Y           INTEGER,
       @DATE_M           INTEGER,
       @CHECK_NUM        INTEGER,
       @CHECK_ID         INTEGER, 
       @CTRLM_TREE       VARCHAR(50),
       @CTRLM_TREE_PARAM VARCHAR(50),
       @SQL_QUERY        NVARCHAR(MAX),
       @CHECK_DESC       NVARCHAR(MAX),
       @ACTION_DESC      NVARCHAR(MAX),
       @EXEC_SQL_QUERY   NVARCHAR(MAX),
       @RESULT_SQL       CHAR(1),
       @RowNo            INTEGER,
          @params NVARCHAR(100) = '@DATE_Y NVARCHAR(4), @DATE_M NVARCHAR(2)';
          

BEGIN

SET @RowNo = 0;
SET @DATE_C = GETDATE();
SET @DATE_Y = (SELECT YEAR (@DATE_C));
SET @DATE_M = (SELECT MONTH (@DATE_C));

DECLARE CURSOR_CHECK_ID CURSOR
FOR SELECT 
       CHECK_ID,
       CTRLM_TREE,
       SQL_QUERY,
       CHECK_DESC,
       ACTION_DESC 
    FROM 
       QUERY_TABLE
          

OPEN CURSOR_CHECK_ID;
FETCH NEXT FROM CURSOR_CHECK_ID INTO 
            @CHECK_ID, 
            @CTRLM_TREE,
            @SQL_QUERY,
            @CHECK_DESC,
            @ACTION_DESC;
       WHILE @@FETCH_STATUS = 0
    BEGIN
           SET @RowNo = @RowNo+1
           SET @CHECK_NUM = @RowNo
           SET @EXEC_SQL_QUERY = @SQL_QUERY

                       EXECUTE @result_sql = sp_executesql @EXEC_SQL_QUERY, @params, @DATE_Y, @DATE_M
             
        INSERT INTO CONTROL_LOG_TABLE (UPDATE_DATE, DATE_C, CHECK_NUM, CHECK_ID, CTRLM_TREE, SQL_QUERY,
              CHECK_DESC, ACTION_DESC, STATUS_IND)
              values (GETDATE(), @DATE_C, @RowNo, @CHECK_ID, @CTRLM_TREE, @SQL_QUERY, @CHECK_DESC, @ACTION_DESC, @RESULT_SQL)


        FETCH NEXT FROM CURSOR_CHECK_ID INTO 
            @CHECK_ID, 
            @CTRLM_TREE,
            @SQL_QUERY,
            @CHECK_DESC,
            @ACTION_DESC;
    END;
CLOSE CURSOR_CHECK_ID;
DEALLOCATE CURSOR_CHECK_ID;
END;

Answer 1

要从动态批处理中捕获结果集，请使用 INSERT...EXECUTE 加载临时 table 或 table 变量。 EG

    declare @r table (check_ind char(1))

    insert into @r(check_ind) 
    EXECUTE sp_executesql @EXEC_SQL_QUERY, @params, @DATE_Y, @DATE_M
         
    INSERT INTO CONTROL_LOG_TABLE (UPDATE_DATE, DATE_C, CHECK_NUM, CHECK_ID, CTRLM_TREE, SQL_QUERY,
          CHECK_DESC, ACTION_DESC, STATUS_IND)
          values (GETDATE(), @DATE_C, @RowNo, @CHECK_ID, @CTRLM_TREE, @SQL_QUERY, @CHECK_DESC, @ACTION_DESC, (select check_ind from @r) )

Answer 2

一种解决方案是将 INSERT 移动到动态查询中。

您不需要实际更改这些查询，您只需将 INSERT 连接起来即可。

SET @EXEC_SQL_QUERY = '
        INSERT INTO CONTROL_LOG_TABLE (UPDATE_DATE, DATE_C, CHECK_NUM, CHECK_ID, CTRLM_TREE, SQL_QUERY,
              CHECK_DESC, ACTION_DESC, STATUS_IND)
              values (GETDATE(), @DATE_C, @RowNo, @CHECK_ID, @CTRLM_TREE, @SQL_QUERY, @CHECK_DESC, @ACTION_DESC, (' + @SQL_QUERY + ')';
';

另一种方法是将 SET @outputvariable 连接到它：

SET @EXEC_SQL_QUERY = 'SET @result = (' + @SQL_QUERY + ');
';

EXECUTE sp_executesql @EXEC_SQL_QUERY, @params, @DATE_Y, @DATE_M, @result_sql;
             
        INSERT INTO CONTROL_LOG_TABLE (UPDATE_DATE, DATE_C, CHECK_NUM, CHECK_ID, CTRLM_TREE, SQL_QUERY,
              CHECK_DESC, ACTION_DESC, STATUS_IND)
              values (GETDATE(), @DATE_C, @RowNo, @CHECK_ID, @CTRLM_TREE, @SQL_QUERY, @CHECK_DESC, @ACTION_DESC, @RESULT_SQL)

并且您还需要将该输出参数添加到 @params。

I'm assuming you have all your bases covered with SQL injection here.

将 sp_executesql 的输出输入 table 列时出现问题（SQL 服务器）

Problem getting output of sp_executesql into a table column (SQL SERVER)

sql

tsql

sql-server

resultset