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1 lut 2010 · UPDATE table SET A = IF(A > 0 AND A < 1, 1, IF(A > 1 AND A < 2, 2, A)) WHERE A IS NOT NULL; you might want to use CEIL() if A is always a floating point value > 0 and <= 2
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:
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.
I tried to find some solution and something like the following query seems to be the solution but I can't get it to work: UPDATE DeviceAttribute. SET Details = CASE Name. WHEN 'Accessories' IS NOT NULL THEN @Accessories. WHEN 'Description' IS NOT NULL THEN @Description.
The MySQL UPDATE Statement. The UPDATE statement is used to modify the existing records in a table. UPDATE Syntax. UPDATE table_name. SET column1 = value1, column2 = value2, ... WHERE condition; Note: Be careful when updating records in a table! Notice the . WHERE clause in the UPDATE statement.
23 cze 2013 · Unfortunately it's not very clear what you want to get in the end, but here is how you could correctly use conditional SET in your UPDATE. UPDATE relation. SET name1 = CASE WHEN userid1 = 3 THEN 'jack' ELSE name1 END, name2 = CASE WHEN userid2 = 3 THEN 'jack' ELSE name2 END. WHERE (userid1 = 3 AND userid2 = 4)
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.
