[fix](hive)fix querying hive text table with NULL DEFINED AS '' #55626
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TPC-H: Total hot run time: 34052 ms |
TPC-DS: Total hot run time: 186395 ms |
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TPC-H: Total hot run time: 34128 ms |
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morningman
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### What problem does this PR solve? Problem Summary: This pull request improves the handling of empty string null formats and delimiter properties for Hive external tables, ensuring more robust and consistent behavior when parsing data. For hive text table like this: ```sql CREATE TABLE test_empty_null_defined_text ( id INT, name STRING ) ROW FORMAT DELIMITED FIELDS TERMINATED BY '\t' NULL DEFINED AS '' STORED AS TEXTFILE; INSERT INTO TABLE test_empty_null_defined_text VALUES (1, 'Alice'), (2, NULL); ``` Query in Doris: ```sql select * from test_empty_null_defined_text; ``` Before Result: ```text +------+-------+ | id | name | +------+-------+ | 1 | Alice | | 2 | | +------+-------+ ``` After Result: ```text +------+-------+ | id | name | +------+-------+ | 1 | Alice | | 2 | NULL | +------+-------+ ```
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…he#55626) Problem Summary: This pull request improves the handling of empty string null formats and delimiter properties for Hive external tables, ensuring more robust and consistent behavior when parsing data. For hive text table like this: ```sql CREATE TABLE test_empty_null_defined_text ( id INT, name STRING ) ROW FORMAT DELIMITED FIELDS TERMINATED BY '\t' NULL DEFINED AS '' STORED AS TEXTFILE; INSERT INTO TABLE test_empty_null_defined_text VALUES (1, 'Alice'), (2, NULL); ``` Query in Doris: ```sql select * from test_empty_null_defined_text; ``` Before Result: ```text +------+-------+ | id | name | +------+-------+ | 1 | Alice | | 2 | | +------+-------+ ``` After Result: ```text +------+-------+ | id | name | +------+-------+ | 1 | Alice | | 2 | NULL | +------+-------+ ```
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…he#55626) ### What problem does this PR solve? Problem Summary: This pull request improves the handling of empty string null formats and delimiter properties for Hive external tables, ensuring more robust and consistent behavior when parsing data. For hive text table like this: ```sql CREATE TABLE test_empty_null_defined_text ( id INT, name STRING ) ROW FORMAT DELIMITED FIELDS TERMINATED BY '\t' NULL DEFINED AS '' STORED AS TEXTFILE; INSERT INTO TABLE test_empty_null_defined_text VALUES (1, 'Alice'), (2, NULL); ``` Query in Doris: ```sql select * from test_empty_null_defined_text; ``` Before Result: ```text +------+-------+ | id | name | +------+-------+ | 1 | Alice | | 2 | | +------+-------+ ``` After Result: ```text +------+-------+ | id | name | +------+-------+ | 1 | Alice | | 2 | NULL | +------+-------+ ```
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What problem does this PR solve?
Problem Summary:
This pull request improves the handling of empty string null formats and delimiter properties for Hive external tables, ensuring more robust and consistent behavior when parsing data.
For hive text table like this:
Query in Doris:
Before Result:
After Result:
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