I use SQL statements on an almost daily basis, yet I have trouble remembering the syntax of even the most basic commands.  Thus I decided to post a cheat sheet here for quick and easy reference.  I hope you may find it valuable.
Selecting Records SELECT * FROM Table WHERE Param1 < 10 ORDER BY Param2
Updating Records UPDATE Table SET Param1 = ‘cat’, Param3 = ‘fish’ WHERE Param2 = ‘dog’
Adding Records INSERT INTO Table (Param1, Param2) VALUES (‘xx’, ‘yy’)
Deleting Records DELETE FROM Table WHERE Param1 = ‘value’
Group By SELECT column_name, aggregate_function(column_name) FROM table_name WHERE column_name = value GROUP BY column_name
List all tables & views in database SELECT TABLE_TYPE, TABLE_SCHEMA, TABLE_NAME FROM INFORMATION_SCHEMA.TABLES ORDER BY TABLE_TYPE, TABLE_NAME