How to return the value from MySql Stored Proc ??
- by karthik
I am using the below storedproc to generate the Insert statements of a specified table
It is build-ed without any errors. Now i want to return the result set in "V_string" as output of the SP
DELIMITER $$
DROP PROCEDURE IF EXISTS `demo`.`InsertGenerator` $$
CREATE DEFINER=`root`@`localhost` PROCEDURE `InsertGenerator`()
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;
WHERE table_name = 'tbl_users';
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 ;
