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You can also use the following syntax of the UPDATE statement to update the data in a table: UPDATE table_name SET (c1, c2, ... cn) = (v1, v2..., vn) WHERE condition Code language: SQL (Structured Query Language) ( sql )
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12 Δεκ 2011 · To update two fields you may use an example like this: UPDATE table1 t1 SET (col1, col2) = ( SELECT col3, col4 FROM table2 t2 WHERE t1.col8=t2.col9 ) The optimizer will see that the sub-queries in the SET and the FROM clause are identical and it should merge them in the internal execution plan.
UPDATE statement. The UPDATE statement updates the values of specified columns in rows of a table, view or nickname, or the underlying tables, nicknames, or views of the specified fullselect. Updating a row of a view updates a row of its base table, if no INSTEAD OF trigger is defined for the update operation on this view.
To update data in a table or view, use the UPDATE statement. With the UPDATE statement, you can change the value of one or more columns in each row that meets the search condition of the WHERE clause.
Example UPDATE statements. Suppose that an employee gets a promotion. To update several items of the employee's data in the NEWEMP table that reflects the move, use this UPDATE statement: UPDATE NEWEMP SET JOB = 'MGR', DEPT = 'E21' WHERE EMPNO = '100125'; Change telephone number for employee number 000190 to 3565 in DSN8C10.EMP.
The UPDATE statement updates the values of specified columns in the rows of a table. It is used to modify the existing records in a table. SET column1 = value1, column2 = value2, ... WHERE condition; Be careful when you updating a records in a table.
26 Απρ 2018 · There's probably a more elegant way to do it but this should only update the matching rows: update TableA A set email = (select email from TableB B where A.address_id = B.address_id) where exists (select 1 from TableB B where A.address_id = B.address_id) ; Another option is to use MERGE:
