Bug report #16787

Error when clicking button 'TEST' with for the rule "ELSE" in rule based renderer

Added by Julien Monticolo almost 7 years ago. Updated about 5 years ago.

Affected QGIS version:2.18.10 Regression?:No
Operating System: Easy fix?:No
Pull Request or Patch supplied:No Resolution:end of life
Crashes QGIS or corrupts data:No Copied to github as #:24686



For rule based styling or rule base labeling, when the filter is ELSE and the button 'Test' is clicked, an error appear :

:syntax error, unexpected ELSE

BTW the rule works perfectly.

Another thing, the ELSE expression can't be found in the expression builder.


#1 Updated by Giovanni Manghi almost 7 years ago

  • Status changed from Open to Feedback

Just tried an expression that contains "ELSE" (the function is "CASE", this is why you don't "find" it with the filter) and it works perfectly (the "test" button). Can you post the expression ypu are using? thanks.

#2 Updated by Julien Monticolo almost 7 years ago

To reproduce :

  1. First rule :
  • rule name : 'Rule 1'
  • filter : $id <= 10
  1. Second rule :
  • rule name : 'Rule 2'
  • filter : ELSE

And if I click the 'test' button on the second rule, the error appear.

Note that if I create a categorized style and I switch after to the rule based styling, the rule 'ELSE' is automaticly added, and if I test this rule, the same error appear too.

#3 Updated by Giovanni Manghi almost 7 years ago

  • Category changed from Expressions to Symbology
  • Status changed from Feedback to Open
  • Subject changed from Error when clicking button 'TEST' with the rule ELSE to Error when clicking button 'TEST' with for the rule "ELSE" in rule based renderer

Right, I forgot of that scenario.

#4 Updated by Harrissou Santanna over 5 years ago

Still valid in master 3.3, even with the dedicated "Else" radiobutton: if you enable the Else option, you have no access to the Test button but if you then check the Filter button, the line edit widget is filled with an "ELSE" expression that returns the Filter expression parsing error: syntax error, unexpected ELSE message when you press "Test".

#5 Updated by Giovanni Manghi about 5 years ago

  • Status changed from Open to Closed
  • Resolution set to end of life

End of life notice: QGIS 2.18 LTR


QGIS 3.4 has recently become our new Long Term Release (LTR) version. This is a major step in our history – a long term release version based on the massive updates, library upgrades and improvements that we carried out in the course of the 2.x to 3x upgrade cycle.

We strongly encourage all users who are currently using QGIS 2.18 LTR as their preferred QGIS release to migrate to QGIS 3.4. This new LTR version will receive regular bugfixes for at least one year. It also includes hundreds of new functions, usability improvements, bugfixes, and other goodies. See the relevant changelogs for a good sampling of all the new features that have gone into version 3.4

Most plugins have been either migrated or incorporated into the core QGIS code base.

We strongly discourage the continued use of QGIS 2.18 LTR as it is now officially unsupported, which means we’ll not provide any bug fix releases for it.

You should also note that we intend to close all bug tickets referring to the now obsolete LTR version. Original reporters will receive a notification of the ticket closure and are encouraged to check whether the issue persists in the new LTR, in which case they should reopen the ticket.

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