Mysql: ER_PARSE_ERROR: while sending create procedure code from node js - mysql

Question

I am trying to send create procedure query from node js to MYSQL.
I am reading Mysql.proc table to get the stored procedure definitions.
Mysql code working fine when submitting from mysql client like workbench or hedis
Getting following error while submitting code from NodeJS
{ Error: ER_PARSE_ERROR: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'CREATE PROCEDURE `qwe`.`USP_GET_ALL_STOCK_WITH_INDICATORS`( IN `IPV_DATE` DATE )' at line 1
.
.
.
code: 'ER_PARSE_ERROR',
errno: 1064,
sqlMessage:
'You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near \'CREATE PROCEDURE `qwe`.`USP_GET_ALL_STOCK_WITH_INDICATORS`( IN `IPV_DATE` DATE )\' at line 1',
sqlState: '42000',
index: 0,
sql:
'USE qwe; CREATE PROCEDURE `qwe`.`USP_GET_ALL_STOCK_WITH_INDICATORS`( IN `IPV_DATE` DATE )BEGIN IF NOT EXISTS(SELECT 1 FROM StockCandle where `DATE`=IPV_DATE) THEN SET #D:=(SELECT MAX(`DATE`) FROM StockCandle); ELSE SET #D:=IPV_DATE; END IF; -- select #D; SELECT SM.Symbol, SM.MA13, SM.MA8, SM.MA5, CASE WHEN SM.MA5>SM.MA8 AND SM.MA8>MA13 THEN \'>>>\' WHEN SM.MA5<SM.MA8 AND SM.MA8<MA13 THEN \'<<<\' ELSE NULL
END ALLIGATOR ,SM.RSI, SM.BHAVTIME, SM.CANDLEINDICATOR FROM StockMaster SM where SM.DATE=#D; END // ' }
tried below code to pares sql in node
formattdSQL = formattdSQL.replace(/(?:\\[rtn]|[\r\t]+)+/g, ' ');
Query to get procedure
SELECT `name`, CONVERT(param_list USING utf8), CONVERT(body USING utf8)
INTO #spname, #spparams, #spbody
FROM mysql.proc WHERE `name` = 'USP_GET_ALL_STOCK_WITH_INDICATORS' AND db = v_oldDB;
SET #sql = CONCAT(#sql, '\r\n', 'DELIMITER //','\r\n','CREATE PROCEDURE `', v_newDB, '`.`', #spname, '`(', #spparams,')',#spbody, ' //', '\r\n','');
I expect that create procedure query should be executed successfully from node

Answer 1

The DELIMITER directive is not part of MySQL Server SQL. That is used only with interactive client utilities that parse an input stream or the contents of an on-screen text box into individual statements -- like workbench or (presumably) "hedis" (whatever that may be).
You don't use it when you are using a programming library to send a query.
Just send the procedure declaration as a single query. Send the USE statement as a separate query, before that.
First query:
USE qwe
(A trailing semicolon in the first query is not actually expected by the server but is allowed if you send it.)
Second query:
CREATE PROCEDURE ...
...
END
There should be no DELIMITER // before, nor // after. Those are all client-side constructs, not meaningful to the server.
There is no need to use your formattdSQL.replace(...) statement to remove newlines. That only serves to make your code unreadable, and isn't needed.