@OOKAMI 感谢您的回复，实际上，clickhouse 对 EXISTS 语法不完全支持，特别是子查询中无法引用外部表和列，这会导致执行时提示 Missing columns: 'A.AAC001'，这也是我将 oracle 中的 NOT EXISTS 改成 NOT IN 的原因

@sss15 感谢您的回复，首先连接处应该是 ON t0.TID = A.AAC001 ，然后，AAC001 是这张表的联合主键之一，类型为 Int64 ，未关联上时值不是 NULL 而是 0 （这一点我也不知道为什么要这么实现，按理说未关联上不应该是 NULL 吗），然后我执行了 该查询，依然很慢
```
EXPLAIN indexes = 1 SELECT
COUNT( 1 ) AS "新参保人数"
FROM
AC02_TEMP AS A
LEFT JOIN ( SELECT B.AAC001 AS TID FROM AC02_TEMP AS B WHERE B.AAC030 < '2018-01-01 00:00:00' ) AS t0 ON t0.TID = A.AAC001
WHERE
A.AAB301 IN ( SELECT AAB301 FROM AA26 WHERE AAA148 = '130800' )
AND A.AAE200 = '41'
AND A.AAC031 = '1'
AND A.AAC030 >= '2018-01-01 00:00:00'
AND t0.TID = 0;
```

执行计划
```
CreatingSets (Create sets before main query execution)
Expression ((Projection + Before ORDER BY))
Aggregating
Expression (Before GROUP BY)
Filter (WHERE)
Join (JOIN FillRightFirst)
Filter (( + Before JOIN))
ReadFromMergeTree (default.AC02_TEMP)
Indexes:
PrimaryKey
Keys:
AAE200
" Condition: (AAE200 in ['41', '41'])"
Parts: 2/2
Granules: 4821/4821
Expression ((Joined actions + (Rename joined columns + (Projection + Before ORDER BY))))
ReadFromMergeTree (default.AC02_TEMP)
Indexes:
PrimaryKey
Condition: true
Parts: 2/2
Granules: 4821/4821
CreatingSet (Create set for subquery)
Expression ((Projection + Before ORDER BY))
ReadFromMergeTree (default.AA26)
Indexes:
PrimaryKey
Condition: true
Parts: 1/1
Granules: 1/1

```