ThearchyHelios
45987748ef
K3b 复核修正(第 3 轮):VALUES 当一张表用又读到遮罩列的整份遮,列名按方言认;sys 库读 performance_schema 的 ps_* 函数进认不全的名单
- VALUES(复核 major,基线就有):_function_columns 按 Postgres、SQLite 的习惯把 VALUES 的列记成 column1…,MySQL 8.0
实际叫 column_0、column_1…(真库实测),派生表、CTE、LATERAL 里的 VALUES ROW 取了号码,外层按名字取、照原名带出时
对不上,号码原样交给模型、落库;MariaDB 拿第一行的值当列名,同样对不上。现在 VALUES 当一张表用(FROM、JOIN、
LATERAL 里的,WITH 里的一段,UNION 的一支,整条就是它,_values_table)又读到遮罩列(含派生出来的名字)的,不论哪个
库、列怎么起名,整份遮。套了括号的 VALUES(整条、UNION 的一支)解析器原样挂在树上、不在任何 SELECT 的 FROM 里,以前
哪个库都没认(Postgres 也漏),一并收口。IN / ANY / EXISTS、标量子查询里的 VALUES 不算:值经外层的表达式带出,或者
只用来筛行
- 列名按方言认(_values_names,_function_columns 用同一套):Postgres、SQLite 叫 column1…,MySQL 叫 column_0…(一行
ROW(…) 摊开数列),写了列名表的按列名表(Postgres 的列名表只改前几列),MariaDB、Oracle 认不准记 None。整份遮时只收
值取自遮罩列的那几列的值(_values_taken 按位置):以前 VALUES 按表值函数认,出的每一列(连同 key、value、别名)都算,
同一行里没碰遮罩列的区域收成遮罩值,在同一次核查里处处被换掉
- 行为变化:Postgres、SQLite 的 LATERAL VALUES 读到遮罩列,以前只遮那几列,现在整份遮(多遮,同一份里的编号也遮);
原来「VALUES 里直接写遮罩列只遮那一列」的用例改成整份遮
- sys 库(复核 minor):INDIRECT_NAMES 的 sys 规则补上按 sys.ps_ 开头认的函数(ps_thread_trx_info 交回线程的事务里执行
过的语句原文,ps_thread_stack 同类;只交回编号、开关的 ps_thread_id、ps_is_* 一并算,多遮;不写 sys. 的要默认库就是
sys 才执行得了,不认,同 sys 的视图)。工具边界和可验证报告共用这一份名单,报告不再判它没碰遮罩列、照常附带快照
- 质询模块说明的已知局限同步
补测试:VALUES 当一张表用 × MySQL(派生表、LATERAL、CTE、外层改名、JOIN LATERAL、LATERAL 子查询、标量子查询、派生
出来的名字、UNION 第一支、整条套括号、派生表里 UNION 的一支)、MariaDB 两种、Postgres 三种、SQLite 一种;三种没读到
遮罩列的对照;四种写法的收值(号码收、区域不收)和 (表达式).* 之后不按位置收;_function_columns 四种列名、两种认不准;
核查 agent 真实查询工具上的端到端(复核点名的三条 MySQL 写法);sys.ps_* 六种写法、三种不该误伤的对照、可验证报告
两种、端到端一条。逐项去掉实现(整份遮、MySQL 的起名、按位置收值、当一张表用的位置、整条就是 VALUES、VALUES 不按表值
函数认、摊开 ROW、列名表、_function_columns 的起名、(表达式).* 之后停、MariaDB / Oracle 认不准、sys.ps_),对应的测试
都变红。另在 MySQL 8.0.46、Postgres 18 临时实例上经核查 agent 的真实查询工具复跑 28 条(MySQL 的 VALUES 14 条、对照
4 条、sys 函数 4 条,Postgres 的 VALUES 6 条):交给模型的、落库的、通用工件接口给的都没有号码;2b5989e 上其中 16 条漏
号码(sys.ps_thread_stack 在只读事务里执行不了,前后一样)。
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