Difference between revisions of "Update Queries"

Revision as of 14:49, 21 December 2016

"UPDATE table SET column1=value1 WHERE column2=value2;"	Example
"UPDATE table SET column1=value1;"	Example
"UPDATE table SET column1=value1, column2=value2;"	Example

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.

Editing 'table'

--- Changes values in column1 to value1, where column2 equals value2.

--- Sets all values in the table, in column1, to value1 (regardless of their current value).

--- Changes column1 to value1 and column2 to value2.

@@ Line 1: / Line 1: @@
+{| class="wikitable"
+|-
+| "UPDATE table SET column1=value1 WHERE column2=value2;" || Example
+|-
+| "UPDATE table SET column1=value1;" || Example
+|-
+| "UPDATE table SET column1=value1, column2=value2;" || Example
+|}
 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.
 Editing 'table'
-:"UPDATE table SET column1=value1 WHERE column2=value2;" --- Changes values in column1 to value1, where column2 equals value2.
+: --- Changes values in column1 to value1, where column2 equals value2.
-:"UPDATE table SET column1=value1;"                      --- Sets all values in the table, in column1, to value1 (regardless of their current value).
+:                      --- Sets all values in the table, in column1, to value1 (regardless of their current value).
-:"UPDATE table SET column1=value1, column2=value2;"      --- Changes column1 to value1 and column2 to value2.
+:      --- Changes column1 to value1 and column2 to value2.