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1 cze 2015 · IF EXISTS (SELECT * FROM Allowance WHERE EmployeeID =10000001 and Year = 2014 and Month = 4) UPDATE Allowance SET OverTime = 10.00, Medical = 10.00, Lunch = 10.45, Bonus =10.10, Allowance = 40.55 WHERE EmployeeID =10000001 and Year = 2014 and Month = 4 ELSE INSERT into Allowance values (10000001,2014,4,10.00,10.00,10.45,10.10,40.55)
17 paź 2024 · MySQL provides two ways to insert a row into a table or update the row if it already exists. We can use the INSERT INTO … ON DUPLICATE KEY UPDATE syntax or the REPLACE statement.
29 kwi 2015 · IF EXISTS (select * from users where username = 'something') THEN. update users set id= 'some' where username = 'something'; ELSE. insert into users (username) values ('something'); END IF; end $$. delimiter ; and call it like this: call select_or_insert();
2 lut 2024 · MySQL will send an alert if a user tries inserting a record that already exists or has a duplicate PRIMARY KEY value. This article outlines the methods that can be used to correct this mistake and get a better result.
11 kwi 2019 · I need to do and IF/THEN statement in mysql based on whether a value exists in a column. If it exists, I need to perform an update on the record and if it does not, then an error should be thrown. I want to check that the siteID actually exists.
SET column1 = value1, column2 = value2, ... WHERE condition; Note: Be careful when updating records in a table! Notice the. WHERE clause in the UPDATE statement. The WHERE clause specifies which record (s) that should be updated. If you omit the WHERE clause, all records in the table will be updated!
mysqli_query($con,"IF EXISTS (SELECT * FROM subs WHERE subs_email='$email') UPDATE subs SET subs_name='$name', subs_birthday='$birthday' WHERE subs_email='$email'. ELSE. INSERT INTO subs (subs_name, subs_email, subs_birthday) VALUES ('$name', '$email', '$birthday')"); mysqli_close($con);
