In SQL we support non-standard clause called ON CONFLICT / OR. It is not a separate clause which can appear in INSERT/UPDATE statements or as a column option in CREATE TABLE statements. See examples ...
皆さんは、普段テーブルにレコードを追加する時にどういう方法を使っているでしょうか。プログラムを書いてORMから操作したり、SQLで直接DBに流し込んだり、さまざまな方法をとっていると思います。単一のテーブルの操作であればSQLでも良いけど、関係 ...
The primary key column is often set to auto-increment when constructing a SQL Server database. To achieve this, the IDENTITY property is enabled on the primary key column. The starting value and ...
To update DBF data, you can specify view descriptors in the SQL procedure's INSERT, DELETE, and UPDATE statements. You can also use these statements to modify SAS data files. However, the ability to ...