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Help Center/ MapReduce Service/ Component Operation Guide (LTS)/ Using CarbonData/ CarbonData FAQ/ Why Is Incorrect Output Displayed When I Perform Query with Filter on Decimal Data Type Values?

Why Is Incorrect Output Displayed When I Perform Query with Filter on Decimal Data Type Values?

Updated on 2022-11-18 GMT+08:00

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Question

Why is incorrect output displayed when I perform query with filter on decimal data type values?

For example:

select * from carbon_table where num = 1234567890123456.22;

Output:

+------+---------------------+--+
| name |        num          |
+------+---------------------+--+
| IAA  | 1234567890123456.22 |
| IAA  | 1234567890123456.21 |
+------+---------------------+--+

Answer

To obtain accurate output, append BD to the number.

For example:

select * from carbon_table where num = 1234567890123456.22BD;

Output:

+------+---------------------+--+
| name |        num          |
+------+---------------------+--+
| IAA  | 1234567890123456.22 |
+------+---------------------+--+

Parent topic: CarbonData FAQ

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Next topic: How to Avoid Minor Compaction for Historical Data?

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