Sql updating multiple rows with different values
New Value From [table] t1 join ( Select 'Foo' as New Value, 23 as My Id union all Select 'ASD' as New Value, 47 as My Id union all Select 'FGH' as New Value, 83 as My Id ) as derived1 on t1. Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.If the item already exists, instead update the stock count of the existing item.To do this without failing the entire transaction, use savepoints: BEGIN; -- other operations SAVEPOINT sp1; INSERT INTO wines VALUES('Chateau Lafite 2003', '24'); -- Assume the above fails because of a unique key violation, -- so now we issue these commands: ROLLBACK TO sp1; UPDATE wines SET stock = stock 24 WHERE winename = 'Chateau Lafite 2003'; -- continue with other operations, and eventually COMMIT;.The sub-query can refer to old values of the current row of the table being updated.you should ensure that the join produces at most one output row for each row to be modified.Only the partitions (or subpartitions) listed are checked for matches, and a row that is not in any of these partitions or subpartitions is not updated, whether it satisfies the clause, are flagged as unsafe for statement-based replication.
Hi I'm hoping one of you kind folk can help with this.If you update a column that has been declared , an error occurs if strict SQL mode is enabled; otherwise, the column is set to the implicit default value for the column data type and the warning count is incremented.The implicit default value is tables for which there are foreign key constraints, the My SQL optimizer might process tables in an order that differs from that of their parent/child relationship. I want to UPDATE a field of table with the results of another query, (sub query), but my sub quesry contains a Group By and so returns multipel rows.UPDATE TABLE_ONE SET TOTAL_SALES =(SUBQUERY) The Subquery: Select COUNT(*) from TABLE_TWO where TRANSACTION_TYPE="SALE" GROUP BY PERSON_ID QUERIES together UPDATE TABLE_ONE SET TOTAL_SALES=(SELECT Count(*) FROM TABLE_TWO GROUP BY PERSON_ID) This Subquery return multiple rows and hence teh ORA-01427 error.