cyberbeam524 commented on code in PR #21714: URL: https://github.com/apache/datafusion/pull/21714#discussion_r4310232753
########## datafusion/sqllogictest/test_files/sql_extension_types.slt: ########## @@ -0,0 +1,279 @@ +# Licensed to the Apache Software Foundation (ASF) under one +# or more contributor license agreements. See the NOTICE file +# distributed with this work for additional information +# regarding copyright ownership. The ASF licenses this file +# to you under the Apache License, Version 2.0 (the +# "License"); you may not use this file except in compliance +# with the License. You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, +# software distributed under the License is distributed on an +# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY +# KIND, either express or implied. See the License for the +# specific language governing permissions and limitations +# under the License. + +# Tests for built-in mapping of SQL types to Arrow canonical extension types. +# See: https://arrow.apache.org/docs/format/CanonicalExtensions.html + +####### +# UUID Extension Type +####### + +# CAST to UUID preserves extension metadata +query ?T +SELECT CAST(arrow_cast(X'00010203040506070809000102030506', 'FixedSizeBinary(16)') AS UUID), + arrow_metadata(CAST(arrow_cast(X'00010203040506070809000102030506', 'FixedSizeBinary(16)') AS UUID), 'ARROW:extension:name'); +---- +00010203040506070809000102030506 arrow.uuid + +# Test table creation and various insertion methods (Null, Naked Binary, and Cast) +statement ok +CREATE TABLE test_uuid (value UUID); + +query TTT +DESCRIBE test_uuid; +---- +value FixedSizeBinary(16) YES + +# 1. NULL insertion +statement ok +INSERT INTO test_uuid VALUES (NULL); + +# 2. Exercises Implicit Promotion to UUID from binary +statement ok +INSERT INTO test_uuid VALUES (X'00010203040506070809000102030506'); + +# 3. Explicit CAST +statement ok +INSERT INTO test_uuid VALUES (CAST(arrow_cast(X'00010203040506070809000102030507', 'FixedSizeBinary(16)') AS UUID)); + +query T +SELECT arrow_metadata(value, 'ARROW:extension:name') FROM test_uuid; +---- +arrow.uuid +arrow.uuid +arrow.uuid + +statement ok +DROP TABLE test_uuid; + +####### +# JSON Extension Type +####### + +# CAST to JSON preserves extension metadata +query TT +SELECT CAST('{"a": 1}' AS JSON), + arrow_metadata(CAST('{"a": 1}' AS JSON), 'ARROW:extension:name'); +---- +{"a": 1} arrow.json + +statement ok +CREATE TABLE test_json (data JSON); + +query TTT +DESCRIBE test_json; +---- +data Utf8 YES + +# 1. NULL insertion +statement ok +INSERT INTO test_json VALUES (NULL); + +# 2. Bare string literal (Implicit Promotion) +statement ok +INSERT INTO test_json VALUES ('{"bare": "literal"}'); + +# 3. Explicit CAST +statement ok +INSERT INTO test_json VALUES (CAST('{"hello": "world"}' AS JSON)); + +query T +SELECT arrow_metadata(data, 'ARROW:extension:name') FROM test_json; +---- +arrow.json +arrow.json +arrow.json + +# Verify Type Decay: Concatenation results in a bare Utf8 string +query T +SELECT arrow_metadata(data || '{"extra": 1}', 'ARROW:extension:name') FROM test_json; +---- +NULL +NULL +NULL + +statement ok +DROP TABLE test_json; + +####### +# Error Handling +####### + +# Error: Cannot cast an integer to UUID +statement error Unsupported CAST from Int64 to FixedSizeBinary\(16\) +SELECT CAST(12345 AS UUID); + +# Error: Cannot cast a short string to UUID +statement error Unsupported CAST from Utf8 to FixedSizeBinary\(16\) +SELECT CAST('too-short' AS UUID); + +# This should trigger cast plan_err: "Cannot cast Utf8 to extension type at column 0" +# Because 'not-a-uuid' is Utf8, and it's being compared to a UUID target in a VALUES list. +statement ok +CREATE TABLE t1 (id UUID); + +# Then, try to insert the invalid type +statement error Cannot automatically convert Utf8 to FixedSizeBinary\(16\) +INSERT INTO t1 VALUES ('not-a-uuid'); + +statement ok +INSERT INTO t1 VALUES (NULL); + +statement ok +DROP TABLE t1; + +# Error: Cannot mix different extension types +statement ok +CREATE TABLE mix_types (id UUID); + +# Even if the JSON string is 16 bytes, it lacks the arrow.uuid metadata +statement error Cannot automatically convert Utf8 to FixedSizeBinary\(16\) +INSERT INTO mix_types VALUES (CAST('{"key": "value"}' AS JSON)); + +statement ok +DROP TABLE mix_types; + +statement ok +CREATE TABLE multi_col (info JSON, id UUID); + +# Succeed with valid types +statement ok +INSERT INTO multi_col VALUES + (CAST('{"a":1}' AS JSON), CAST(arrow_cast(X'00010203040506070809000102030506', 'FixedSizeBinary(16)') AS UUID)); + +# This will fail because a Boolean cannot be cast to FixedSizeBinary(16) +statement error Cannot automatically convert Boolean to FixedSizeBinary\(16\) +INSERT INTO multi_col VALUES + (CAST('{"a":1}' AS JSON), true); + +statement ok +DROP TABLE multi_col; + +statement ok +CREATE TABLE bulk_uuid (id UUID); Review Comment: Added these tests in test_uuid instead and removed bulk_uuid tests -- This is an automated message from the Apache Git Service. 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