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Add NULLIF expression function [FEATURE] #8809

Merged
merged 2 commits into from
Jan 8, 2019
Merged

Add NULLIF expression function [FEATURE] #8809

merged 2 commits into from
Jan 8, 2019

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m-kuhn
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@m-kuhn m-kuhn commented Jan 8, 2019 •
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Allows for substituting values with NULL if they match another value.

Substitute '(none)'

name nullif("name", '(none)')
'' ''
'(none)' NULL
'Jack' 'Jack'
NULL NULL

Substitute '' (empty string)

name nullif("name", '')
'' NULL
'Jack' 'Jack'
NULL NULL

@m-kuhn m-kuhn force-pushed the expression_nullif branch from 465b7f1 to af027d9 Compare January 8, 2019 10:03
nyalldawson
nyalldawson reviewed Jan 8, 2019
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Nice!

@m-kuhn m-kuhn merged commit dd0b33e into qgis:master Jan 8, 2019
@m-kuhn m-kuhn deleted the expression_nullif branch January 8, 2019 13:12
@qgib qgib mentioned this pull request May 25, 2019
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@m-kuhn @nyalldawson