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Sql server merge10/20/2023 ![]() Now, you want to copy the data from the Consultant to the Employee table based on the condition that if an employee already exists in the Employee table, then update its FirstName and LastName columns. ![]() To understand the MERGE statement, assume that you have two tables, Consultant and Employee. VALUES(source_table_name.expr_1, source_table_name.expr_2.source_table_name.expr_n) ![]() UPDATE target_table_name SET target_table_lumn_1 = source_table_name.expr_1, target_table_lumn_2 = source_table_name.expr_2.target_table_lumn_n = source_table_name.expr_n ![]() USING source_table_name or source_table_query Syntax: MERGE INTO target_table_name or target_table_query The MERGE statement selects the rows from one or more tables (called Source table), and based on conditions specified, INSERT or UPDATE data toĪnother table (called Target table). Next SQL MERGE Statement - SQL Server, Oracle
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