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MDEV-30032: EXPLAIN FORMAT=JSON output: print costs

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Basic printout for join and table execution costs.
This commit is contained in:
Sergei Petrunia
2022-11-19 21:00:23 +03:00
parent 657868f5e7
commit ffe0beca25
91 changed files with 3441 additions and 18 deletions
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3
mysql-test/main/join_cache.result
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@ -6254,6 +6254,7 @@ EXPLAIN
{
"query_block": {
"select_id": 1,
"cost": "COST_REPLACED",
"nested_loop": [
{
"table": {
@ -6264,6 +6265,7 @@ EXPLAIN
"key_length": "4",
"used_key_parts": ["a"],
"rows": 10,
"cost": "COST_REPLACED",
"filtered": 100,
"attached_condition": "a.a <= 10",
"using_index": true
@ -6279,6 +6281,7 @@ EXPLAIN
"key_length": "10",
"used_key_parts": ["kp1", "kp2"],
"rows": 836,
"cost": "COST_REPLACED",
"filtered": 9.090909004,
"index_condition": "b.kp2 <= 10",
"attached_condition": "b.kp2 <= 10 and b.col1 + 1 < 33333"