14 Commits

Author	SHA1	Message	Date
Stig Bakken	6fbb9f5e87	Implement EXPLAIN TABLE OVERRIDE for pre-validating overrides. ... Example: ```sql EXPLAIN TABLE OVERRIDE mysql('127.0.0.1:3306', 'db', 'table', 'user', 'pw') PARTITION BY tuple(toYYYYMM(created), id % 8) ``` Validations done: * check that storage overrides do not reference unknown or nullable columns * check that default specifier is not modified for columns	2021-12-30 09:02:27 +01:00
Nikolai Kochetov	66a76ab70f	Rewrite PushingToViewsBlockOutputStream part 6	2021-09-03 20:29:36 +03:00
Alexey Milovidov	9c0097cd9b	Review fixes	2021-07-11 02:14:03 +03:00
Peng Jian	b526aacd56	Show estimates for SELECT query	2021-07-09 18:29:45 +08:00
Nikolai Kochetov	c92c352d9a	Fix crash in EXPLAIN AST without query.	2021-06-23 15:29:10 +03:00
Alexey Milovidov	ad88819ee4	Fix a bunch of warnings from PVS-Studio	2021-05-08 19:13:10 +03:00
taiyang-li	cd7827f70c	explain ast support nonselect queries	2020-12-16 18:11:38 +08:00
Ivan	315ff4f0d9	ANTLR4 Grammar for ClickHouse and new parser (#11298)	2020-12-04 05:15:44 +03:00
Ivan	281bf351d2	Remove ANALYZE and AST queries (#16536)	2020-11-02 15:47:12 +03:00
Nikolai Kochetov	924f1dfc46	Allow to parse EXPLAIN PLAN.	2020-07-02 11:40:41 +03:00
Nikolai Kochetov	5a678d74c2	Add explain pipeline.	2020-06-27 12:31:31 +03:00
Nikolai Kochetov	47d9f4af9c	Header for explain.	2020-06-27 12:30:51 +03:00
Nikolai Kochetov	e1481ccfc2	Add initial explain.	2020-06-27 12:30:38 +03:00
Nikolai Kochetov	8b2232dc5e	Parser for Explain	2020-06-22 16:26:55 +03:00