Re: [I] row-wise min and max [datafusion]

2025-06-12 Thread via GitHub


kosiew commented on issue #16366:
URL: https://github.com/apache/datafusion/issues/16366#issuecomment-2969200984

   @drtconway 
   You're welcome.
   
   Can you close this issue?


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Re: [I] row-wise min and max [datafusion]

2025-06-12 Thread via GitHub


drtconway commented on issue #16366:
URL: https://github.com/apache/datafusion/issues/16366#issuecomment-2969217442

   Sure!


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Re: [I] row-wise min and max [datafusion]

2025-06-12 Thread via GitHub


drtconway closed issue #16366: row-wise min and max
URL: https://github.com/apache/datafusion/issues/16366


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Re: [I] row-wise min and max [datafusion]

2025-06-12 Thread via GitHub


drtconway commented on issue #16366:
URL: https://github.com/apache/datafusion/issues/16366#issuecomment-2969144940

   Ah yes! Thank you!
   
   But they're not in the Rust part of the documentation 
(https://datafusion.apache.org/user-guide/expressions.html), which is why I 
didn't know they were there; though I see they are in the prelude.


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Re: [I] row-wise min and max [datafusion]

2025-06-12 Thread via GitHub


kosiew commented on issue #16366:
URL: https://github.com/apache/datafusion/issues/16366#issuecomment-2968970691

   ```sql
   DataFusion CLI v48.0.0
   > -- Define sample data
   CREATE TABLE t1 (a INT, b INT, c INT) AS VALUES
 (4, NULL, NULL),
 (1, 2, 3),
 (3, 1, 2),
 (1, NULL, -1),
 (NULL, NULL, NULL),
 (3, 0, -1);
   
   -- Display per-row minima and maxima
   SELECT a, b, c,
  least(a, b, c) AS row_min,
  greatest(a, b, c) AS row_max
   FROM t1;
   
   -- A few scalar examples
   SELECT greatest(4, 7, 5) AS g1, least(4, 7, 5) AS l1;
   SELECT greatest(-1, 10, 3), least(-1, 10, 3);
   
   0 row(s) fetched.
   Elapsed 0.036 seconds.
   
   +--+--+--+-+-+
   | a| b| c| row_min | row_max |
   +--+--+--+-+-+
   | 4| NULL | NULL | 4   | 4   |
   | 1| 2| 3| 1   | 3   |
   | 3| 1| 2| 1   | 3   |
   | 1| NULL | -1   | -1  | 1   |
   | NULL | NULL | NULL | NULL| NULL|
   | 3| 0| -1   | -1  | 3   |
   +--+--+--+-+-+
   6 row(s) fetched.
   Elapsed 0.008 seconds.
   
   +++
   | g1 | l1 |
   +++
   | 7  | 4  |
   +++
   1 row(s) fetched.
   Elapsed 0.002 seconds.
   ```


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Re: [I] row-wise min and max [datafusion]

2025-06-12 Thread via GitHub


kosiew commented on issue #16366:
URL: https://github.com/apache/datafusion/issues/16366#issuecomment-2968958912

   hi @drtconway ,
   
   pmin sounds a lot like 
   https://datafusion.apache.org/user-guide/sql/scalar_functions.html#least 
   and
   pmax like
   https://datafusion.apache.org/user-guide/sql/scalar_functions.html#greatest


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