The `skill_discovery_template` table
...
Field | Type | Attributes | Key | Null | Default | Extra | Comment spellId |
mediumint(8) | unsigned | PRI | NO | 0 |
| SpellId of the discoverable spell | |
mediumint(8) | unsigned | PRI | NO | 0 |
| spell requirement reqSkillValue | |
smallint(5) | unsigned |
| NO | 0 |
| skill points requirement chance | |
float | signed |
| NO | 0 |
| chance to discover |
...
The chance, in percent, that a recipe has of being automatically "discovered", whether by any recipe use or by the specific recipe use defined in reqSpell Skill discovery template tc2