ThearchyHelios
ad1092900c
剖析的关系覆盖率把对不上类型的键算作没对上;升级前旧说法的剖析备注不再让目录升版本
复核发现两处(C-relation-coverage-inflated、C-profile-note-rewording-bumps-catalog):
一、覆盖率虚高。key_literals 把父列是数字、子列取到的不是整数写法的文字('WALKIN'、'GUEST0')从覆盖率的
分母里拿掉了:散客代号占九成的一列只剩 1 个整数写法的键对上,就测成覆盖率 100%、升为「已核实」,模型的
db_schema、自查、冻结快照都会照这条错的关系写 join。基线上同一份数据是 proposed、覆盖率 3.1%。
- 整数主键里永远没有这些文字,它们照样是子表的键值,算作没对上、留在分母里:
覆盖率 = 对上的 / (拼进 IN 的 + 按类型就对不上的)。全都不是整数写法时不发父表的核对查询,覆盖率 0%、
「可能不是这条关系」,不再整条判「无法核对」。
- key_literals 改回 KeyLiterals(literals, unmatchable, unsafe):不能安全拼进 SQL 的值单独计数,不再用
「取到的 − 拼进的 − 不同类型的」倒推('0012' 和 '12' 写成同一个字面量时会被错说成「类型不支持核对」)。
- 被指向列是日期时间的关系整条跳过,并且在发子表取值查询之前就跳过、不占这张表的查询预算;说明改成
「各库的时间写法和精度不同,不核对这种关系的覆盖率」——子表一侧也是时间时,以前写的「两端类型不同」不照实。
- 备注里「另有 N 个键值和被指向列的类型不同,未计入」改成「其中 N 个不是整数写法,被指向列是数字,算作没对上」。
- 报告里覆盖率不足的那句「抽样覆盖率 N,保持推断」也改成「覆盖率 N」,和备注一种说法。
二、升级后第一次重新剖析,数据没变也给每张有剖析结论的表升一个版本。剖析备注改了四处说法(抽样覆盖率→
覆盖率、子表抽样→子表取了、(只看前→(按存储顺序只看前、按前 N 行统计→按存储顺序取前 N 行统计),
catalog.same_profile_note 没认成同一句,已发布工作流记下的目录版本对不上,之后每次正式运行都报
catalog.drift。
- same_profile_note 比较前先把这四处固定句式的旧写法换成现在的写法(_LEGACY_PROFILE_WORDING,句式带着前后文
匹配,不会误换人写的原话);算相同时保留目录里的旧备注,旧说法等结论真变了、重写备注时才换掉。
- 起草时核对有效行过滤写在模型依据后面的那句「剖析核对:按前 N 行统计」同样只认那一句的旧写法。
- MySQL / MariaDB 上新加的排序规则说明、ENUM 列定义里没出现的取值、无效日期个数是新信息,这些备注照常
升一次版本,要写进发版说明。
测试:test_catalog_profile 加文字键指向整数主键的端到端用例(去掉修复回跑:测成 verified、覆盖率 100%);
test_profile_dialect_units 加覆盖率分母、时间键不发查询、unsafe 计数的单测;test_catalog_semantics 加跨版本
用例(把剖析备注改回旧说法写进目录、同样的数据重新剖析,版本号和目录都不变;去掉规整回跑两条失败)。
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