[bug](parquet)Fix the problem that the parquet reader reads the missing sub-columns of the struct and fails. #38718
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…ng sub-columns of the struct and fails.
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clang-tidy review says "All clean, LGTM! 👍" |
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hubgeter
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Aug 10, 2024
…ng sub-columns of the struct and fails. (apache#38718) ## Proposed changes Fix the problem that the parquet reader reads the missing sub-columns of the struct and fails. for example : suppose we have a column `array<struct<a:int>>` . And this column has two data ``` [{1},{2},{3}] [{4},{5}] ``` Then we add a subcolumn b to the struct . Now the column structure is like this `array<struct<a:int,b:string>>` The expected data for the query is as follows, instead of an error : ``` [{1,null},{2,null},{3,null}] [{4,null},{5,null}] ```
dataroaring
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Aug 11, 2024
…ng sub-columns of the struct and fails. (#38718) ## Proposed changes Fix the problem that the parquet reader reads the missing sub-columns of the struct and fails. for example : suppose we have a column `array<struct<a:int>>` . And this column has two data ``` [{1},{2},{3}] [{4},{5}] ``` Then we add a subcolumn b to the struct . Now the column structure is like this `array<struct<a:int,b:string>>` The expected data for the query is as follows, instead of an error : ``` [{1,null},{2,null},{3,null}] [{4,null},{5,null}] ```
wyxxxcat
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Aug 14, 2024
…ng sub-columns of the struct and fails. (apache#38718) ## Proposed changes Fix the problem that the parquet reader reads the missing sub-columns of the struct and fails. for example : suppose we have a column `array<struct<a:int>>` . And this column has two data ``` [{1},{2},{3}] [{4},{5}] ``` Then we add a subcolumn b to the struct . Now the column structure is like this `array<struct<a:int,b:string>>` The expected data for the query is as follows, instead of an error : ``` [{1,null},{2,null},{3,null}] [{4,null},{5,null}] ```
dataroaring
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Aug 16, 2024
…ng sub-columns of the struct and fails. (#38718) ## Proposed changes Fix the problem that the parquet reader reads the missing sub-columns of the struct and fails. for example : suppose we have a column `array<struct<a:int>>` . And this column has two data ``` [{1},{2},{3}] [{4},{5}] ``` Then we add a subcolumn b to the struct . Now the column structure is like this `array<struct<a:int,b:string>>` The expected data for the query is as follows, instead of an error : ``` [{1,null},{2,null},{3,null}] [{4,null},{5,null}] ```
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Proposed changes
Fix the problem that the parquet reader reads the missing sub-columns of the struct and fails.
for example :
suppose we have a column
array<struct<a:int>>. And this column has two dataThen we add a subcolumn b to the struct . Now the column structure is like this
array<struct<a:int,b:string>>The expected data for the query is as follows, instead of an error :