MySQL UPDATE Statement

MySQL UPDATE Statement

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

UPDATE Syntax:

UPDATE tablename SET col1 = val1, col2 = value2, … WHERE condition;

• Be careful when updating records in a table! Notice the WHERE clause in the UPDATE statement. The WHERE clause specifies which record(s) that should be updated. If you omit the WHERE clause, all records in the table will be updated!

Example: 

UPDATE student SET ContactName = ‘999999999’, City= ‘Delhi’ WHERE StudentID = 1;

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