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I've been trying to figure out how I can make a query with MySQL that checks if the value (string $haystack) in a certain column contains certain data (string $needle), like this: SELECT * FROM `table` WHERE `column`.contains('{$needle}')
IF(type = 'P', amount, amount * -1) as amount. See https://dev.mysql.com/doc/refman/8.0/en/flow-control-functions.html. Additionally, you could handle when the condition is null. In the case of a null amount: IF(type = 'P', IFNULL(amount,0), IFNULL(amount,0) * -1) as amount.
12 lut 2024 · In this comprehensive guide, we’ll explore three methods: using the LOCATE() function, the INSTR() function, and the LIKE clause. Each method has its unique strengths, and understanding when and how to employ them will enable you to tackle a wide range of string-matching scenarios.
Syntax. IF (condition, value_if_true, value_if_false) Parameter Values. Technical Details. Works in: From MySQL 4.0. More Examples. Example. Return 5 if the condition is TRUE, or 10 if the condition is FALSE: SELECT IF (500<1000, 5, 10); Try it Yourself » Example. Test whether two strings are the same and return "YES" if they are, or "NO" if not:
12 paź 2022 · Learn how to perform a query with MySQL to check if the value of a certain column contains specific data with multiple approaches.
Use IF...THEN statement to conditionally execute a block of statements based on the evaluation of a specified condition. Use IF...THEN...ELSE statement to execute a block of statements if a specified condition is true and an alternative block of statements if the condition is false.
Compare two strings. If a string function is given a binary string as an argument, the resulting string is also a binary string. A number converted to a string is treated as a binary string. This affects only comparisons.
