執行Mysql存儲過程的問題

Question

存儲過程的構建沒有任何問題。這樣做的目的是將所選表格備份到腳本文件中。當SP返回一個值{Insert statements}時。

我正在使用由SQLWAYS [將MsSql轉換爲MySql的工具]創建的以下MySql存儲過程。 實際MSSQL SP爲http://www.codeproject.com/KB/database/InsertGeneratorPack.aspx

，當我在MySQL查詢瀏覽器執行SP，它說：「未知列‘tbl_users’在‘字段列表’」

會是什麼問題呢？因爲當我構建這個轉換後的MySql SP時沒有錯誤。

幫助..

DELIMITER $$ 

DROP PROCEDURE IF EXISTS `demo`.`InsertGenerator` $$ 
CREATE DEFINER=`root`@`localhost` PROCEDURE `InsertGenerator`(v_tableName VARCHAR(100)) 
SWL_return: 
BEGIN 
-- SQLWAYS_EVAL# to retrieve column specific information 

-- SQLWAYS_EVAL# table 

    DECLARE v_string NATIONAL VARCHAR(3000); -- SQLWAYS_EVAL# first half 

-- SQLWAYS_EVAL# tement 

    DECLARE v_stringData NATIONAL VARCHAR(3000); -- SQLWAYS_EVAL# data 

-- SQLWAYS_EVAL# statement 

    DECLARE v_dataType NATIONAL VARCHAR(1000); -- SQLWAYS_EVAL# 

-- SQLWAYS_EVAL# columns 

    DECLARE v_colName NATIONAL VARCHAR(50); 
    DECLARE NO_DATA INT DEFAULT 0; 
    DECLARE cursCol CURSOR FOR 
    SELECT column_name,data_type FROM `columns` 
    WHERE table_name = v_tableName; 
    DECLARE CONTINUE HANDLER FOR SQLEXCEPTION 
    BEGIN 
     SET NO_DATA = -2; 
    END; 
    DECLARE CONTINUE HANDLER FOR NOT FOUND SET NO_DATA = -1; 
    OPEN cursCol; 
    SET v_string = CONCAT('INSERT ',v_tableName,'('); 
    SET v_stringData = ''; 

    SET NO_DATA = 0; 
    FETCH cursCol INTO v_colName,v_dataType; 

    IF NO_DATA <> 0 then 

     -- NOT SUPPORTED print CONCAT('Table ',@tableName, ' not found, processing skipped.') 
close cursCol; 

     LEAVE SWL_return; 
    end if; 

    WHILE NO_DATA = 0 DO 
     IF v_dataType in('varchar','char','nchar','nvarchar') then 

     SET v_stringData = CONCAT(v_stringData,'SQLWAYS_EVAL# ll(',v_colName,'SQLWAYS_EVAL# ''+'); 
     ELSE 
     if v_dataType in('text','ntext') then -- SQLWAYS_EVAL# 

-- SQLWAYS_EVAL# else 


      SET v_stringData = CONCAT(v_stringData,'SQLWAYS_EVAL# ll(cast(',v_colName,'SQLWAYS_EVAL# 00)),'''')+'''''',''+'); 
     ELSE 
      IF v_dataType = 'money' then -- SQLWAYS_EVAL# doesn't get converted 

-- SQLWAYS_EVAL# implicitly 


       SET v_stringData = CONCAT(v_stringData,'SQLWAYS_EVAL# y,''''''+ 
isnull(cast(',v_colName,'SQLWAYS_EVAL# 0)),''0.0000'')+''''''),''+'); 
      ELSE 
       IF v_dataType = 'datetime' then 

        SET v_stringData = CONCAT(v_stringData,'SQLWAYS_EVAL# time,''''''+ 
isnull(cast(',v_colName, 
        'SQLWAYS_EVAL# 0)),''0'')+''''''),''+'); 
       ELSE 
        IF v_dataType = 'image' then 

        SET v_stringData = CONCAT(v_stringData,'SQLWAYS_EVAL# ll(cast(convert(varbinary,',v_colName, 
        'SQLWAYS_EVAL# 6)),''0'')+'''''',''+'); 
        ELSE 
        SET v_stringData = CONCAT(v_stringData,'SQLWAYS_EVAL# ll(cast(',v_colName,'SQLWAYS_EVAL# 0)),''0'')+'''''',''+'); 
        end if; 
       end if; 
      end if; 
     end if; 
     end if; 
     SET v_string = CONCAT(v_string,v_colName,','); 
     SET NO_DATA = 0; 
     FETCH cursCol INTO v_colName,v_dataType; 
    END WHILE; 
END $$ 

DELIMITER ; 

Answer 1

DELIMITER $$ 

DROP PROCEDURE IF EXISTS `sample`.`InsGen` $$ 
CREATE DEFINER=`root`@`localhost` PROCEDURE `InsGen`(
in_db varchar(20), 
in_table varchar(20), 
in_ColumnName varchar(20), 
in_ColumnValue varchar(20) 
) 
BEGIN 

declare Whrs varchar(500); 
declare Sels varchar(500); 
declare Inserts varchar(200); 
declare tablename varchar(20); 
declare ColName varchar(20); 


set tablename=in_table; 


# Comma separated column names - used for Select 
select group_concat(concat('concat(\'"\',','ifnull(',column_name,','''')',',\'"\')')) 
INTO @Sels from information_schema.columns where table_schema=in_db and table_name=tablename; 


# Comma separated column names - used for Group By 
select group_concat('`',column_name,'`') 
INTO @Whrs from information_schema.columns where table_schema=in_db and table_name=tablename; 


#Main Select Statement for fetching comma separated table values 

set @Inserts=concat("select concat('insert IGNORE into ", in_db,".",tablename," values(',concat_ws(',',",@Sels,"),');') 
as MyColumn from ", in_db,".",tablename, " where ", in_ColumnName, " = " , in_ColumnValue, " group by ",@Whrs, ";"); 

PREPARE Inserts FROM @Inserts; 

EXECUTE Inserts;      

END $$ 

DELIMITER ;