4.4

# The UPDATE Clause With a Column List

### The UPDATE Clause

• You can UPDATE single or multiple rows at a time.
• In a SET clause, you define the column along with its new value that may be a literal value or an expression.
• You can update one or all of the columns in a row.
• You can use a subquery or WHERE clause in an UPDATE statement.

Code Sample:

1    USE world; 2    UPDATE city 3    SET Population = 65000, district = 'Aconcagua';

Results:

UPDATE city

• You indicate the table you want to UPDATE.

SET Population = 65000, district = 'Aconcagua';

• You indicate the table columns and associated values you want to change them to by using the equals sign ( = ).
• You must separate each column and value with a comma.
• There is no trailing comma

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