Expands common keywords (select, from, where, ...) when part of the keyword is typed. Just press Ctrl+Space or choose from the list to insert the keyword.
SlickEdit's Defs Tab gives you a powerful overview of the currrent file, showing all the functions and globals in a file and highlights the function that the cursor is currently in. Double clicking an item will take you there immediately. List items alphabetically or by line number.
For SQL this support goes to the statement level.
See more cool tagging related features here.