ClickHouse/tests/queries/0_stateless/02035_isNull_isNotNull_format.sql

-- { echo }
explain syntax select null is null;
explain syntax select null is not null;
explain syntax select isNull(null);
explain syntax select isNotNull(null);
explain syntax select isNotNull(1)+isNotNull(2) from remote('127.2', system.one);
select isNotNull(1)+isNotNull(2) from remote('127.2', system.one);
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 18:04:12 +00:00			`-- { echo }`
			`explain syntax select null is null;`
			`explain syntax select null is not null;`
			`explain syntax select isNull(null);`
			`explain syntax select isNotNull(null);`
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 18:18:00 +00:00			`explain syntax select isNotNull(1)+isNotNull(2) from remote('127.2', system.one);`
			`select isNotNull(1)+isNotNull(2) from remote('127.2', system.one);`