Can we use MERGE statement on single table?

Can we use MERGE on same table?

MERGE is a deterministic statement. That is, you cannot update the same row of the target table multiple times in the same MERGE statement. You must have the INSERT and UPDATE object privileges on the target table and the SELECT object privilege on the source table.

Can we use multiple tables in MERGE statement?

Merging tables by columns. Multiple tables can be merged by columns in SQL using joins. Joins merge two tables based on the specified columns (generally, the primary key of one table and a foreign key of the other). Below is the generic syntax of SQL joins.

What is MERGE statement used?

The MERGE statement in SQL is a very popular clause that can handle inserts, updates, and deletes all in a single transaction without having to write separate logic for each of these. You can specify conditions on which you expect the MERGE statement to insert, update, or delete, etc.

What is a MERGE table in SQL?

SQL MERGE Statement - SQL Server, Oracle. The MERGE statement selects the rows from one or more tables (called Source table), and based on conditions specified, INSERT or UPDATE data to another table (called Target table).