2023年5月17日 — The UPDATE SQL statement changes data already stored in the database, and the INSERT statement adds a new record to a table. The UPSERT ...
INSERT OR UPDATE determines if a row exists by matching UNIQUE column values to the existing data values. If a UNIQUE constraint violation occurs, INSERT OR ...
2021年10月10日 — A nested INSERT, UPDATE, DELETE, or MERGE statement is not allowed in a SELECT statement that is not the immediate source of rows for an INSERT ...
2021年4月27日 — Hi, i want to know how update a row if exist and if don't exist insert a new row. Example: SQL Server. SQL Server. A family of Microsoft ...
2008年9月20日 — Having said that, Using MERGE, or UPDATE then INSERT is easier on your server and less error prone since you don't have to remember to add ( ...