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 ...

Identifies rows with null values in critical columns. Open the SQL script in your preferred SQL client. Execute the script step by step or as a whole, depending on your requirements. Verify the ...

In this example, Transact-SQL will create a new table with all columns from the rows in "old_table" in which the last name starts with "Ja." Create a new table from the results of two separate ...