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Update data on table

✇Kalai Arasan
By: kalaiarasanpandi
18 May 2024 at 19:50

UPDATE statement allows you to update data in one or more columns of one or more rows in a table.

UPDATE table_name
SET column1 = value1,
    column2 = value2,
    ...
WHERE condition;

In this syntax:

  • First, specify the name of the table that you want to update data after the UPDATE keyword.
  • Second, specify columns and their new values after SET keyword. The columns that do not appear in the SET clause retain their original values.
  • Third, determine which rows to update in the condition of the WHERE clause
Code:
UPDATE company SET salary = salary * 2
WHERE salary = 150000;

The WHERE clause is optional. If you omit the WHERE clause, the UPDATE statement will update all the column values in the table.

Code:
UPDATE company SET salary = salary * 2

Summary :
  • Use the UPDATE statement to update data in one or more columns of a table.
  • Specify a condition in a WHERE clause to determine which rows to update data.
  • Use the RETURNING clause to return the updated rows from the UPDATE statement

Reference :

Update data on table

✇Journey of Full stack developer
By: kalaiarasanpandi
18 May 2024 at 19:50

UPDATE statement allows you to update data in one or more columns of one or more rows in a table.

UPDATE table_name
SET column1 = value1,
    column2 = value2,
    ...
WHERE condition;

In this syntax:

  • First, specify the name of the table that you want to update data after the UPDATE keyword.
  • Second, specify columns and their new values after SET keyword. The columns that do not appear in the SET clause retain their original values.
  • Third, determine which rows to update in the condition of the WHERE clause
Code:
UPDATE company SET salary = salary * 2
WHERE salary = 150000;

The WHERE clause is optional. If you omit the WHERE clause, the UPDATE statement will update all the column values in the table.

Code:
UPDATE company SET salary = salary * 2

Summary :
  • Use the UPDATE statement to update data in one or more columns of a table.
  • Specify a condition in a WHERE clause to determine which rows to update data.
  • Use the RETURNING clause to return the updated rows from the UPDATE statement

Reference :

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