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1 lut 2010 · UPDATE Table SET A = CASE WHEN A > 0 AND A < 1 THEN 1 WHEN A > 1 AND A < 2 THEN 2 END WHERE (A > 0 AND A < 1) OR (A > 1 AND A < 2) (The inequalities entail A IS NOT NULL).
In this article, we would like to show you UPDATE query with IF condition in MySQL. Quick solution: UPDATE `table_name` SET `column_name` = IF(condition , if_true, if_false); Practical example. To show UPDATE query with IF condition, we will use the following users table:
11 lip 2024 · The IF () function in MySQL is a powerful tool that allows you to implement conditional logic directly within your SQL queries. It takes three parameters: a condition to evaluate, a value to return if the condition is true, and a value to return if the condition is false.
The WHERE clause, if given, specifies the conditions that identify which rows to update. With no WHERE clause, all rows are updated. If the ORDER BY clause is specified, the rows are updated in the order that is specified. The LIMIT clause places a limit on the number of rows that can be updated.
The IF statement allows you to evaluate one or more conditions and execute the corresponding code block if the condition is true. The IF statement has three forms: IF...THEN statement: Evaluate one condition and execute a code block if the condition is true.
The IF statement can have THEN, ELSE, and ELSEIF clauses, and it is terminated with END IF. If a given search_condition evaluates to true, the corresponding THEN or ELSEIF clause statement_list executes. If no search_condition matches, the ELSE clause statement_list executes.
15 mar 2012 · update table set a = if(a > 20, 20, if(a < 20 && a > 1, a, 0)) where a is not null; Add the && A > 1 to the second IF statement and your third condition is satisfied. Edit:
