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PI Web API Search Query Tagnames with Spaces

Question asked by MaxStrueverWipro on Feb 15, 2017
Latest reply on Apr 24, 2017 by gregor


So I'm having trouble using the search / query function in the PI Web API when it comes to tagnames with spaces.

Say I am trying to retrieve a tag with the name

OPCint1Device Status

if I search for that with the GET query
it returns tons of tags. at first this was confusing but then looking at the manual for it, PI Web API  anything with a space in the q= part of the query will be treated as an OR search. so OPCint1Device Status is searching for

anything that matches name=OPCint1Device OR anything that matches "Status" ... so, lots of other tags that have Status in the name

the space character is not mentioned in the help page as a character that needs to be escaped with a \, but it also doesn't mention how to handle spaces in the name or other query field

I've tried the following, with no luck

  • name:OPCint1Device\ Status
    • this returned lots of tags again, so still doing OR
  • name:OPCint1Device?Status
    • this returned 0 tags, does ? wildcard  only match alphanumeric characters and not spaces? this is different than say a ? in a tag search in ProcessBook
  • (name:OPCint1Device Status)
    • returned lots of tags
  • name:"OPCint1Device Status"
    • returned lots of tags
  • "name:OPCint1Device Status"
    • returned 0 tags
  • name:'OPCint1Device Status'
    • returned 0 tags
  • 'name:OPCint1Device Status'
    • returned 0 tags
  • name:OPCint1DeviceStatus
    • returned 0 tags



using PI Web API 2015 R2