Practical SQL Handbook, The: Using SQL Variants, Fourth Edition

Syntax Conventions

Key BIG Caps means it's a keyword (command). MIXed Caps mixed with lowercase letters means it's a keyword and you can type either the full word or just the part in caps. little Lowercase words are variables; supply your own. { } Curly braces mean you must choose at least one of the enclosed options. [ ] Brackets mean choosing one or more of the enclosed options is optional. ( ) Parentheses are actually typed as part of the command (unlike curly braces and brackets, which are syntax symbols). | The vertical bar means you choose a maximum of one option. , The comma means you choose as many options as you like and separate your choices with commas that you type as part of the command. . . . The ellipses mean you can do it again, whatever it was. ...