ydb/yql/essentials/sql/v1/namespace.cpp, branch mainMirror of YDB github reposhttps://code.mastervirt.ru/ydb/atom?h=main2026-06-18T15:30:10ZYQL-20631: Support simple CTEs on YqlSelect2026-06-18T15:30:10Zvitya-smirnovvitya-smirnov@yandex-team.com2026-06-18T14:54:12Zurn:sha1:4265d9121fd0635072e106e1895db92e900e7508
The first iteration on WITH CTE support. Only simple CTEs are supported.
Properties:
1. Redefinition is forbidden.
2. Shadowing is supported.
3. Nested WITH CTEs are supported.
Following features are not yet implemented:
1. Column names specification. There is an assertion failure at core because
of an absent column order when translating it like for the `PgSelect`.
2. `RECURSIVE` is postponed. There a more sophisticated translation with
`YqlSelf` callable is required.
Also there was a potential defect because of an empty `Id` result not expected.
commit_hash:759676d8a9d369f7eedd9b87f79455b2f8a9fcff