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new 47bd094c7f test: improve `lcm` function SQL test coverage (#23755)
47bd094c7f is described below
commit 47bd094c7fd2fc22cb2b94ee58458b87e365a56f
Author: Yongting You <[email protected]>
AuthorDate: Thu Jul 23 14:08:54 2026 +0800
test: improve `lcm` function SQL test coverage (#23755)
## Which issue does this PR close?
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- Closes #.
## Rationale for this change
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in the issue then this section is not needed.
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your changes and offer better suggestions for fixes.
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Codecov reports low test coverage for this function, so this PR adds
more SLT tests for it.
The tests were AI-generated, and I manually verified that the results
are correct.
See `Codecov` bot comment -> `☔ View full report in Codecov by Harness`
-> `Indirect Changes` for the updated test coverage.
## What changes are included in this PR?
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is sometimes worth providing a summary of the individual changes in this
PR.
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## Are these changes tested?
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## Are there any user-facing changes?
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---
datafusion/sqllogictest/test_files/math.slt | 31 +++++++++++++++++++++++++++++
1 file changed, 31 insertions(+)
diff --git a/datafusion/sqllogictest/test_files/math.slt
b/datafusion/sqllogictest/test_files/math.slt
index 2e9107dc6e..668809632e 100644
--- a/datafusion/sqllogictest/test_files/math.slt
+++ b/datafusion/sqllogictest/test_files/math.slt
@@ -1134,6 +1134,20 @@ SELECT lcm(6, arrow_cast(column1, 'Decimal128(38,0)'))
FROM (VALUES (4), (9), (0
18
0
+query R
+SELECT lcm(arrow_cast(column1, 'Decimal32(7,0)'), arrow_cast(column2,
'Decimal32(7,0)')) FROM (VALUES (6, 4), (6, 9), (6, 0));
+----
+12
+18
+0
+
+query R
+SELECT lcm(arrow_cast(column1, 'Decimal64(16,0)'), arrow_cast(column2,
'Decimal64(16,0)')) FROM (VALUES (6, 4), (6, 9), (6, 0));
+----
+12
+18
+0
+
query R
SELECT lcm(arrow_cast(column1, 'Decimal128(38,0)'), arrow_cast(column2,
'Decimal128(38,0)')) FROM (VALUES (6, 4), (6, 9), (6, 0));
----
@@ -1141,6 +1155,23 @@ SELECT lcm(arrow_cast(column1, 'Decimal128(38,0)'),
arrow_cast(column2, 'Decimal
18
0
+query R
+SELECT lcm(arrow_cast(column1, 'Decimal256(40,0)'), arrow_cast(column2,
'Decimal256(40,0)')) FROM (VALUES (6, 4), (6, 9), (6, 0));
+----
+12
+18
+0
+
+# invalid argument count and type
+query error DataFusion error:
+SELECT lcm();
+
+query error DataFusion error:
+SELECT lcm(1, 2, 3);
+
+query error DataFusion error:
+SELECT lcm('x', 'y');
+
# lcm array and scalar with nulls in the array
query I
SELECT lcm(column1, 5) FROM (VALUES (0), (NULL), (25));
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