L. C. Hsieh created SPARK-55994:
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Summary: Support CREATE TABLE LIKE for V2
Key: SPARK-55994
URL: https://issues.apache.org/jira/browse/SPARK-55994
Project: Spark
Issue Type: Improvement
Components: SQL
Affects Versions: 4.2.0
Reporter: L. C. Hsieh
CREATE TABLE LIKE was implemented solely via CreateTableLikeCommand, a V1-only
command that bypasses the DataSource V2 analysis pipeline entirely. As a
result, it was impossible to use CREATE TABLE LIKE to create a table in a
non-session V2 catalog (e.g., testcat.dst): a 2-part name like testcat.dst was
misinterpreted as database testcat in the session catalog and threw
NoSuchDatabaseException, while a 3-part name like testcat.ns.dst was a parse
error because the grammar only accepted 2-part tableIdentifier.
We should support CREATE TABLE LIKE through the standard V2 DDL pipeline so
that V2 catalog targets are fully supported, while preserving the existing V1
behavior when both target and source resolve to the session catalog.
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