Mysql c updating result sets


29-Mar-2019 21:28

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-- DROP PROCEDURE IF EXISTS check User; DELIMITER // CREATE PROCEDURE check User(IN in_email VARCHAR(80), IN in_password VARCHAR(50)) BEGIN SELECT id, name FROM users WHERE email = in_email AND password = in_password LIMIT 1; -- If result is 1, UPDATE users SET online = 1 WHERE id = "result_id"; END // DELIMITER ; DELIMITER // CREATE PROCEDURE check User(IN in_email VARCHAR(80), IN in_password VARCHAR(50)) BEGIN DECLARE temp Id INT DEFAULT 0; DECLARE temp Name VARCHAR(50) DEFAULT NULL; DECLARE done INT DEFAULT 0; DECLARE cur CURSOR FOR SELECT id, name FROM users WHERE email = in_email AND password = in_password; DECLARE CONTINUE HANDLER FOR NOT FOUND SET done = 1; OPEN cur; REPEAT FETCH cur INTO temp Id, temp Name; UPDATE users SET online = 1 WHERE id = temp Id; UNTIL done = 1 END REPEAT; CLOSE cur; SELECT temp Name; END // DELIMITER ; You could try an if statement if you have an result which returns 1 i looked at yor code, it seems nothing returns a true so you have to refactor it, as above omg wrote thats realy true why do you have an limit 1 in your select query where only one emailadress can exisst?

PDF (US Ltr) - 39.4Mb PDF (A4) - 39.4Mb PDF (RPM) - 38.5Mb HTML Download (TGZ) - 10.9Mb HTML Download (Zip) - 11.0Mb HTML Download (RPM) - 9.6Mb Man Pages (TGZ) - 217.7Kb Man Pages (Zip) - 327.4Kb Info (Gzip) - 3.6Mb Info (Zip) - 3.6Mb Some views are updatable and references to them can be used to specify tables to be updated in data change statements.

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The function returns 0 if the execution went OK and there are more results.

mysql-py If related data is being updated across multiple tables, queries see either all old values or all new values, not a mix of old and new values.

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The other four parameters are the database name, port number, unix socket and finally the client flag.mysql-js You can use the update() method to modify one or more records in a table.