2 Commits

Author	SHA1	Message	Date
Azat Khuzhin	e1b6acfa52	Add missing parenthesis for isNotNull/isNull rewrites to IS [NOT] NULL ... After #29446 the following query was "broken": select isNotNull(1)+isNotNull(2) from remote('127.2', system.one) This was also a problem for queries to external storages (i.e. mysql), since it also uses query rewrite, like non-local distributed queries. Fixes: #29446	2021-10-21 21:18:00 +03:00
Azat Khuzhin	2378491c04	Transform isNull/isNotNull to IS NULL/IS NOT NULL (for external dbs) ... This is required to support queries (like `foo IS NULL`) to external databases (i.e. MySQL). This patch had been submitted separately, due to: - avoid mixing patches - run CI (and update tests references)	2021-09-27 22:24:09 +03:00