sql query update code example

Example 1: sql update query

--update query example
 UPDATE table_name
 SET column1 = value1, column2 = value2, ...
 WHERE condition;

Example 2: sql update from select

UPDATE
    Table_A
SET
    Table_A.col1 = Table_B.col1,
    Table_A.col2 = Table_B.col2
FROM
    Some_Table AS Table_A
    INNER JOIN Other_Table AS Table_B
        ON Table_A.id = Table_B.id
WHERE
    Table_A.col3 = 'cool'

Example 3: sql update

Updates existing data in a table.
Example: Updates the mileage and serviceDue values for a vehicle with an
id of 45 in the cars table.
UPDATE cars
SET mileage = 23500, serviceDue = 0
WHERE id = 45;

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