Search code does not follow coding guidelines

Please see item 11. at http://docs.moodle.org/en/Development:Coding#Database_structures

Do not use 'AS' for table aliases in SQL. That is

SELECT x + y AS name ... is correct.

SELECT * FROM

alias ...

if you don't get this right, then it breaks on at least one of our supported databases. You have this wrong throughout the serach code.

Also, in HEAD, you are using the old get_record_sql, get_field, ... functions, which do not work any more.