SQL UPDATE Statement

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SQL UPDATE Statement

The UPDATE statement is used to update records in a table.

The UPDATE Statement

The UPDATE statement is used to update existing records in a table.

SQL UPDATE Syntax

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Note: Notice the WHERE clause in the UPDATE syntax. The WHERE clause specifies which record or records that should be updated. If you omit the WHERE clause, all records will be updated!

SQL UPDATE Example

The "Persons" table:

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Now we want to update the person "Tjessem, Jakob" in the "Persons" table. We use the following SQL statement:

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SQL UPDATE Warning

Be careful when updating records. If we had omitted the WHERE clause in the example above, like this:

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