Make all forums active/inactive:
Active: UPDATE forum SET options=options + 1 WHERE NOT(options & 1);
Inactive: UPDATE forum SET options=options - 1 WHERE (options & 1);

Open/Close all forums for new posts:
Open: UPDATE forum SET options=options + 2 WHERE NOT(options & 2);
Close: UPDATE forum SET options=options - 2 WHERE (options & 2);

Set all forums to act as categories/forums:
Act as forums: UPDATE forum SET options=options + 4 WHERE NOT(options & 4);
Act as categories:UPDATE forum SET options=options - 4 WHERE (options & 4);

Turn on/off Post Moderation for all forums:
On: UPDATE forum SET options=options + 8 WHERE NOT(options & 8);
Off: UPDATE forum SET options=options - 8 WHERE (options & 8);

Turn on/off Thread Moderation for all forums:
On: UPDATE forum SET options=options + 16 WHERE NOT(options & 16);
Off: UPDATE forum SET options=options - 16 WHERE (options & 16);

Turn on/off Attachment Moderation for all forums:
On: UPDATE forum SET options=options + 32 WHERE NOT(options & 32);
Off: UPDATE forum SET options=options - 32 WHERE (options & 32);

Turn on/off BBCode for all forums:
On: UPDATE forum SET options=options + 64 WHERE NOT(options & 64);
Off: UPDATE forum SET options=options - 64 WHERE (options & 64);

Turn on/off Images for all forums:
On: UPDATE forum SET options=options + 128 WHERE NOT(options & 128);
Off: UPDATE forum SET options=options - 128 WHERE (options & 128);

Turn on/off HTML for all forums:
On: UPDATE forum SET options=options + 256 WHERE NOT(options & 256);
Off: UPDATE forum SET options=options - 256 WHERE (options & 256);

Turn on/off Smilies for all forums:
On: UPDATE forum SET options=options + 512 WHERE NOT(options & 512);
Off: UPDATE forum SET options=options - 512 WHERE (options & 512);

Turn on/off Post Icons for all forums:
On: UPDATE forum SET options=options + 1024 WHERE NOT(options & 1024);
Off: UPDATE forum SET options=options - 1024 WHERE (options & 1024);

Turn on/off Thread Rating for all forums:
On: UPDATE forum SET options=options + 2048 WHERE NOT(options & 2048);
Off: UPDATE forum SET options=options - 2048 WHERE (options & 2048);

Turn on/off Post Counting for all forums:
On: UPDATE forum SET options=options + 4096 WHERE NOT(options & 4096);
Off: UPDATE forum SET options=options - 4096 WHERE (options & 4096);

Set 'Can have Password' on/off for all forums:
On: UPDATE forum SET options=options + 8192 WHERE NOT(options & 8192);
Off: UPDATE forum SET options=options - 8192 WHERE (options & 8192);

Turn on/off Search Indexing for all forums:
On: UPDATE forum SET options=options + 16384 WHERE NOT(options & 16384);
Off: UPDATE forum SET options=options - 16384 WHERE (options & 16384);

Turn on/off Style Overriding for all forums:
On: UPDATE forum SET options=options + 32768 WHERE NOT(options & 32768);
Off: UPDATE forum SET options=options - 32768 WHERE (options & 32768);

Turn on/off 'Show on ForumJump Menu' for all forums:
On: UPDATE forum SET options=options + 65536 WHERE NOT(options & 65536);
Off: UPDATE forum SET options=options - 65536 WHERE (options & 65536);

Turn on/off 'Warn Administrators' for all forums:
On: UPDATE forum SET options=options + 131072 WHERE NOT(options & 131072);
Off: UPDATE forum SET options=options - 131072 WHERE (options & 131072);