yugabyte/yugabyte-db

[YCQL] UDTs can be named set/map/list, but can't be referenced

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#1,005 opened on Mar 15, 2019

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area/ycqlgood first issuekind/enhancementpriority/low

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Description

Jira Link: DB-4694 UDTs can be named set/map/list/frozen (and tuple after #949), but can't be referenced e.g. during table creation.

Example:

YCQL:

cqlsh> CREATE TYPE k.map(a int);
cqlsh> CREATE TABLE k.test(p INT PRIMARY KEY , ct map);
SyntaxException: Query error: Invalid SQL Statement. syntax error, unexpected ')', expecting '<'
CREATE TABLE k.test(p INT PRIMARY KEY , ct map);
                                              ^
 (error -11)

Cassandra CQL:

cqlsh> CREATE TYPE k.map(a int);
cqlsh> CREATE TABLE k.test(p INT PRIMARY KEY , ct map);
-- (no error)

Contributor guide

Research direction
Investigate the YCQL parser to allow UDT names that conflict with reserved keywords. Look for grammar rules that prevent referencing these names in CREATE TABLE statements.
Tech stack
ccpp
Domain
database
Issue type
Bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
GitCQL
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
60