When designing objects in SQL Server, we must follow certain best practices. For example, a table should have primary keys, identity columns, clustered and unclustered indexes, data integrity and ...

MySQL table primary keys and unique indexes prevent multiple rows with the same index from being added to the table. If you try to insert a duplicate row with a standard INSERT statement, you will ...

INSERT INTO A (COLUMN1, COLUMN2) VALUES ('www.google.com', 10) ON DUPLICATE KEY UPDATE COLUMN2=10; ERROR: org.springframework.jdbc.datasource.init.ScriptStatementFailedException: Failed to execute SQL ...