{
  "id": "skill-area:query-optimizer-internals",
  "_kind": "SkillArea",
  "_file": "domain/skill-areas/skill-areas-expanded-2.yaml",
  "_cluster": "domain",
  "attributes": {
    "displayName": "Query Optimizer Internals",
    "description": "Understanding and tuning query optimizers — cost models, join\nordering algorithms, statistics collection, plan enumeration,\nand optimizer hints for PostgreSQL, MySQL, and custom engines.\n",
    "expertiseLevels": [
      "expert",
      "authoritative"
    ]
  },
  "outgoingEdges": [
    {
      "from": "skill-area:query-optimizer-internals",
      "to": "domain:databases",
      "kind": "applies_to",
      "attributes": {
        "confidence": "primary"
      }
    },
    {
      "from": "skill-area:query-optimizer-internals",
      "to": "skill-area:index-design",
      "kind": "prerequisite_for_learning",
      "attributes": {
        "strength": "recommended"
      }
    },
    {
      "from": "skill-area:query-optimizer-internals",
      "to": "skill-area:postgres-tuning",
      "kind": "prerequisite_for_learning",
      "attributes": {
        "strength": "helpful"
      }
    }
  ],
  "incomingEdges": [
    {
      "from": "skill-area:index-design",
      "to": "skill-area:query-optimizer-internals",
      "kind": "prerequisite_for_learning",
      "attributes": {
        "strength": "helpful"
      }
    },
    {
      "from": "specialization:database-internals",
      "to": "skill-area:query-optimizer-internals",
      "kind": "contains"
    }
  ]
}