kala-tamin IBM Informix Spatial datablade LIneFromText function

IBM Informix Spatial datablade LIneFromText function

I am using IBM-Informix for my school project as part of "Informix on-campus" ativity conduted by IBM.

however it is giving me error as "(USE31) - Too few points for geometry type in ST_LineFromText.", in the second linefromtext function.

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The problem in the second call to ST_LineFromText() is that you are attempting to pass parameters into it, which isn't possible.

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You have:.
MSI install error: This advertised application will not be installed because it might be unsafe
ST_LineFromText('linestring (0 0,v1.pre 0,v1.pre v1.post,0 v1.post,0 0 )',5) 
The string contains 'v1.pre' which is not a valid number, etc.

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If you need to parameterize your query, you either need to generate the string with those values in place, or you need to use a different method.

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One crude but possible solution is:.
Detecting and suppressing REINSTALLMODE=v switch
ST_LineFromText('linestring (0 0,' || v1.pre || ' 0,' || v1.pre || ' ' ||                 v1.post || ',0 ' || v1.post || ',0 0 )', 5) 
This may not do the job - but illustrates the problem..
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