The query can include a WHERE clause to limit the number of rows updated. Remember, you can use queries as the source of a MERGE statement. MERGE /*+ APPEND PARALLEL(8) */ INTO dest_tab tt
The number of rows updated can be altered by adding a WHERE clause to either the inline view or the main update statement. The second option is to join the two tables as an inline view and base the update on that. If the workload is sufficiently large and the server can cope with the extra workload, the PARALLEL hint can be used to make this run in parallel. When you’re on select sites, add items to Droplist and we’ll let you know if we detect a price drop. (Terms Apply) Honey also helps you know when it’s the right time to buy. Predicate Information (identified by operation id): Redeem your Honey Gold points for gift cards from your favorite stores. | Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time | The execution plan for the current data volume is shown below.
Usually, he is not very lucky with girls, but after meeting his roommate, he will discover it might be a way to improve his luck. SET (tt.code, tt.description) = (SELECT st.code, st.description 'Pleasure Thieves' put you in the role of a teenager who moves to study journalism in a famous university. Without this, the unmatched rows will have their values set to NULL. Notice the EXISTS predicate to exclude rows from the DEST_TAB table with no matching row in the SOURCE_TAB table. The first option is to do an update of the DEST_TAB table using a subquery to pull the correct data from the SOURCE_TAB table.
The aim is to update the rows in the DEST_TAB table with the data from the SOURCE_TAB table. 'Description for ' || level AS description
The SOURCE_TAB table contains 5,000 rows, each of which has a matching key value with a row from the DEST_TAB table, but different data in the CODE and DESCRIPTION columns. This article describes how a table can be updated using data from another table. Home » Articles » Misc » Here Updates Based on Queries