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email-tracker/external/duckdb/test/parquet/test_18470.test
2025-10-24 19:21:19 -05:00

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SQL

# name: test/parquet/test_18470.test
# description: Test issue #18470 - Internal Error when querying multiple Parquet files that have mixed data type for same column
# group: [parquet]
require parquet
require notwindows
set seed 0.42
statement ok
COPY (
SELECT
(random() * 65535)::UINT16 as column1,
'text_value_' || row_number() OVER () as column2
FROM generate_series(1, 100)
) TO '__TEST_DIR__/20250101.parquet' (FORMAT PARQUET);
statement ok
COPY (
SELECT
(random() * 65535)::UINT64 as column1,
'text_value_' || row_number() OVER () as column2
FROM generate_series(1, 100)
) TO '__TEST_DIR__/20250102.parquet' (FORMAT PARQUET);
query III
SELECT filename = '__TEST_DIR__/20250101.parquet', *
FROM read_parquet('__TEST_DIR__/2025010*.parquet')
WHERE filename >= '__TEST_DIR__/20250101.parquet'
AND column1 = 72
LIMIT 10;
----
true 72 text_value_66