Difference between revisions of "Update Queries"
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{| class="wikitable" | {| class="wikitable" | ||
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| − | | | + | | UPDATE table SET column1=value1 WHERE column2=value2; || Changes values in column1 to value1, where column2 equals value2 |
|- | |- | ||
| − | | | + | | UPDATE table SET column1=value1; || Sets all column1 values, on every row, to value1 (regardless of their current value). |
|- | |- | ||
| − | | | + | | UPDATE table SET column1=value1, column2=value2; || Changes column1 to value1, and column2 to value2. |
|} | |} | ||
Revision as of 09:09, 27 January 2017
For updating values already entered into a database. Can edit multiple rows at once. Not using the WHERE clause will cause every entry to be edited.
| UPDATE table SET column1=value1 WHERE column2=value2; | Changes values in column1 to value1, where column2 equals value2 |
| UPDATE table SET column1=value1; | Sets all column1 values, on every row, to value1 (regardless of their current value). |
| UPDATE table SET column1=value1, column2=value2; | Changes column1 to value1, and column2 to value2. |
