====== spell_group_stack_rules 表 ======
----
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Table defines if auras in one spell_group can't stack with each other.

Notes: The table doesn't affect persistent area auras stacking or passive auras stacking (they can stack always) or spells belonging to same spell_rank (they are always subject of SPELL_GROUP_STACK_RULE_EXCLUSIVE rule)

**表结构**
^Field^Type^Attributes^Key^Null^Default^Extra^Comment^
|[[#group_id|group_id]]|INT|UNSIGNED|PRI|NO|0| | |
|[[#stack_rule|stack_rule]]|TINYINT|SIGNED| |NO|0| | |
|[[#description|description]]|VARCHAR(150)| | |NO| | | |

===== 字段说明 =====
----
==== group_id ====

Id of group in spell_group table. The spell_group may contain another spell_groups inside, if so stacking rule needs to be defined for these groups separately.

==== stack_rule ====

Enum SpellGroupStackFlags in core:

^Id^ ^Stack Rule Name^Description^
|0|0x00|SPELL_GROUP_STACK_RULE_DEFAULT|No stacking rule defined - placeholder|
|1|0x01|SPELL_GROUP_STACK_RULE_EXCLUSIVE|Auras from group can't stack with each other|
|2|0x02|SPELL_GROUP_STACK_FLAG_NOT_SAME_CASTER| |
|4|0x04|SPELL_GROUP_STACK_FLAG_FLAGGED| |
|8|0x08|SPELL_GROUP_STACK_FLAG_NEVER_STACK| |
|10|0x10|SPELL_GROUP_STACK_FLAG_EFFECT_EXCLUSIVE| |
|20|0x20|SPELL_GROUP_STACK_FLAG_MAX| |
| | |Internal use| |
|100|0x100|SPELL_GROUP_STACK_FLAG_FORCED_STRONGEST| |
|200|0x200|SPELL_GROUP_STACK_FLAG_FORCED_WEAKEST| |
	
==== description ====

A short description of what type of spells are in the group and what rule is applied.