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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:
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!
16 kwi 2016 · UPDATE Tests AS old INNER JOIN ( SELECT 10 AS TestId, 25 AS TestSubId, 1000 AS TestScore, 2000 AS TestScore2 UNION ALL SELECT 11, 22, 1100, 2100 ) AS new ON old.TestId = new.TestId AND old.TestSubId = new.TestSubId SET old.TestScore = new.TestScore, old.TestScore2 = new.TestScore2 ;
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.
13 lut 2014 · The general form of the command you need to use to update a single row's column: UPDATE my_table SET my_column='new value' WHERE something='some value'; And here's an example. BEFORE
30 lip 2019 · The syntax is as follows to perform UPDATE using IF condition in MySQL − update yourTableName set yourColumnName =if(yourColumnName =yourOldValue,yourNewValue,yourColumnName); To understand the above syntax, let us create a table.
