General rules for simplifying SQL statements

Question

I\'m looking for some \"inference rules\" (similar to set operation rules or logic rules) which I can use to reduce a SQL query in complexity or size. Does there exist some

Answer 1

I like everyone on a team to follow a set of standards to make code readable, maintainable, understandable, washable, etc.. :)

• everyone uses the same alias
• no cursors. no loops
• why even think of IN when you can EXISTS
• INDENT
• Consistency in coding style

there is some more stuff here What are some of your most useful database standards?