laravel/framework — pull request #1797 by rmasters (2013-07-02 09:28:43+00:00)
Title: Added missing SQL operators for each grammar

I've added bitwise operators using the following grid:

| | MySQL | PgSQL | SQLite | MSSQL |
| ------ |:-----:|:-----:|:------:|:-----:|
| AND | & | & | & | & |
| AND-E | | | | &= |
| OR | (pipe)| (pipe)| (pipe) | (pipe)|
| OR-E | | | |(pipe=)|
| XOR | ^ | # | | ^ |
| XOR-E | | | | ^= |
| L-SHFT | << | << | << | |
| R-SHFT | >> | >> | >> | |

Additionally added:

- SQLite's `==` operator,
- MSSQL's not-greater-than (`!>`), not-less-than (`!<`) operators.

I haven't added NOT (which is universally `~`) as I'm not sure how this would be used with `where($col, $op, $val)`.