feat(sql): add difference and non_negative_difference sql functions#6858
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feat(sql): add difference and non_negative_difference sql functions#6858
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jstirnaman
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Feb 23, 2026
mhilton
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Feb 27, 2026
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| ### difference | ||
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| Returns the result of subtraction between subsequent values. |
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I think the crucial bit of information that makes this different to using something like (c - LAG(c, 1)) OVER (...) is that it will skip over any number of NULL values to find the previous value to take the difference from.
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I think the crucial bit of information that makes this different to using something like (c - LAG(c, 1)) OVER (...) is that it will skip over any number of NULL values to find the previous value to take the difference from.
@claude Update difference to make this distinction clear:
it uses the last previous non-NULL value to calculate the difference.
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Summary
Adds documentation for
differenceandnon_negative_differenceSQL functions.Checklist
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