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I have a vegetation vector layer with vegetation type mapping. I want to join this vector layer with a CSV file (no geometry) which includes threatened species occurrence.

The vector layer has a "vegetation class" field which provides a single vegetation classification for each polygon. The CSV file has a species list with a "Class" field which indicates all the vegetation classes (comma separated) the species is known to occur.

When I create a join between the vector layer and the CSV table data, there doesn't appear to be anywhere for me to indicate the join field contains multiple values and I therefore receive NULL results when inspecting the join.

How can I indicate that the value from the target field (vegetation class), which is a single value, needs to search each row in the join field (class) which contains multiple comma separated values?

qgis attribute-joins

share

edited 1 min ago

ahmadhanb

23.7k32154

asked 6 mins ago

DarrenDarren

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add a comment | 

0

I have a vegetation vector layer with vegetation type mapping. I want to join this vector layer with a CSV file (no geometry) which includes threatened species occurrence.

The vector layer has a "vegetation class" field which provides a single vegetation classification for each polygon. The CSV file has a species list with a "Class" field which indicates all the vegetation classes (comma separated) the species is known to occur.

When I create a join between the vector layer and the CSV table data, there doesn't appear to be anywhere for me to indicate the join field contains multiple values and I therefore receive NULL results when inspecting the join.

How can I indicate that the value from the target field (vegetation class), which is a single value, needs to search each row in the join field (class) which contains multiple comma separated values?

qgis attribute-joins

share

edited 1 min ago

ahmadhanb

23.7k32154

asked 6 mins ago

DarrenDarren

92

add a comment | 

I have a vegetation vector layer with vegetation type mapping. I want to join this vector layer with a CSV file (no geometry) which includes threatened species occurrence.

The vector layer has a "vegetation class" field which provides a single vegetation classification for each polygon. The CSV file has a species list with a "Class" field which indicates all the vegetation classes (comma separated) the species is known to occur.

When I create a join between the vector layer and the CSV table data, there doesn't appear to be anywhere for me to indicate the join field contains multiple values and I therefore receive NULL results when inspecting the join.

How can I indicate that the value from the target field (vegetation class), which is a single value, needs to search each row in the join field (class) which contains multiple comma separated values?

qgis attribute-joins

share

edited 1 min ago

ahmadhanb

23.7k32154

asked 6 mins ago

DarrenDarren

92

share

edited 1 min ago

ahmadhanb

23.7k32154

asked 6 mins ago

DarrenDarren

92

share

edited 1 min ago

ahmadhanb

23.7k32154

asked 6 mins ago

DarrenDarren

92

edited 1 min ago

ahmadhanb

23.7k32154

edited 1 min ago

ahmadhanb

23.7k32154

asked 6 mins ago

DarrenDarren

92

asked 6 mins ago

DarrenDarren

92