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I loaded a PostgreSQL layer in QGIS project. The layer has some array type attributes like integer[]. I'd like to edit these attributes in Attribute Table. But it doesn't work, I could not type any value in the table cell. I also tried changing the Fields Widget of the attribute but it seem doesn't support multidimensional array value.

  • Array types are a non-relational extension of PG. Implementing them would be a significant change to the ODBC model used in cursors. It's not really a surprise they're not supported. I suggest you use the relational model and implement the lists as one-to-many tables. – Vince May 24 at 14:29
  • Which version are you using? Editing an integer[] field should work out of the box (QGIS 3.10) – JGH May 24 at 17:49
  • @JGH I am currently using QGIS 3.12.1. I have not done this on QGIS 3.10 before. I may have a try, thanks. – Zipei Lu May 25 at 0:58
  • @Vince Thanks for your explanation. But using one-to-many tables is too complicated for editing features manually. Strange thing is if I export features as a GeoJSON file. The list-like string will automatically convert to list type. If I import the GeoJSON , the list turns to string. They don't support array types may have other reasons other than ODBC model. – Zipei Lu May 25 at 2:21
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For a table containing an array of integer

 create table testarr(id int primary key, arr integer[], geom geometry(point, 4326));

The widget type should be set to list

enter image description here

You can then edit a current record

enter image description here

or add a new one

enter image description here

| improve this answer | |
  • Yes, this way works, but it doesn't support more than 1 dimension array :( – Zipei Lu May 25 at 13:22

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