mysql update syntax code example

Example 1: update set mysql

UPDATE tableName SET anAttribute = 'Something' WHERE anOtherAttribute = 'SomethingElse'

//All 'SomethingElse' values will become 'Something'

Example 2: update query in mysql

-- Set New Employee Password 
UPDATE employee
SET employee.password = '1234'
WHERE employee.email = '[email protected]';

Example 3: update table mysql

-- Things in brackets are optional
-- IGNORE modifier updates rows even if errors occur (ie: the rows that cause errors are simply not updated)
UPDATE [IGNORE] table_name 
SET 
    column_name1 = expr1,
    column_name2 = expr2,
    ...
[WHERE 
    condition]; -- WHERE tells us which rows to update based on said condition

Example 4: MySQL UPDATE

The UPDATE statement updates data in a table. It allows you to change the values in one or more columns of a single row or multiple rows.

The following illustrates the basic syntax of the UPDATE statement:

UPDATE [LOW_PRIORITY] [IGNORE] table_name 
SET 
    column_name1 = expr1,
    column_name2 = expr2,
    ...
[WHERE
    condition];
In this syntax:

First, specify the name of the table that you want to update data after the UPDATE keyword.
Second, specify which column you want to update and the new value in the SET clause. To update values in multiple columns, you use a list of comma-separated assignments by supplying a value in each column’s assignment in the form of a literal value, an expression, or a subquery.
Third, specify which rows to be updated using a condition in the WHERE clause. The WHERE clause is optional. If you omit it, the UPDATE statement will modify all rows in the table.

Example 5: mysql update value

UPDATE employees 
SET 
    email = '[email protected]'
WHERE
    employeeNumber = 1056;Code language: SQL (Structured Query Language) (sql)