Stored procedure - One Line select statement Syntax ERROR

问题

One line select statement throws syntax error in SP, but the query if executed doesn't produce any error.

The error changes to syntax error near - if I remove IN _HOSTID input parameter and DECLARE statements. Its very weird and I can't find the cause of the error.

DELIMITER //

CREATE PROCEDURE getTotalCCU(IN _HOSTID INTEGER)
BEGIN
DECLARE HOSTID INT;
DECLARE TOTAL_ITEM INT;

SELECT  item_count  FROM items WHERE hostid = '12345' and key_ LIKE '%_net%' AND NOT key_  LIKE '%Total_%' AND NOT key_ LIKE '%{#%' AND STATUS = '0';

END //

DELIMITER ;

Only when I try to import it, it throws syntax error on line 3.

mysql -uroot -p DB01 < getTotalNET.sql

ERROR 1064 (42000) at line 3: 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 '-



END' at line 12

回答1:

Figured out the issue.

Variable should not be the same as any column in the query.

DECLARE HOSTID INT;

SELECT  item_count  FROM items WHERE hostid = '12345' and key_ LIKE '%_net%' AND NOT key_  LIKE '%Total_%' AND NOT key_ LIKE '%{#%' AND STATUS = '0';

Since the query has a column named hostid we get a syntax error.

Solution rename the HOSTID variable to _HOSTID.

DECLARE _HOSTID INT;

来源：https://stackoverflow.com/questions/60952150/stored-procedure-one-line-select-statement-syntax-error