RE: Get union of other fields

Marco — Mon, 11 Apr 2022 17:38:33 GMT

That sounds like what I need, perfect. Thank you!

RE: Get union of other fields

Peter Lewis — Mon, 11 Apr 2022 16:12:33 GMT

If the string data is guaranteed to be identical within a category, you could probably make it easy and just return the first item in each category list. Here's an example:

a!localVariables(
  local!data: local!data: {
    {
      category: "round things",
      string: "bubbles, <otherdata>"
    },
    {
      category: "round things",
      string: "bubbles, <otherdata>"
    },
    {
      category: "soapy things",
      string: "bubbles, <otherdata>"
    },
    {
      category: "hard things",
      string: "rocks, <otherdata>"
    }
  },
  local!uniqueCategories: union(touniformstring(local!data.category), touniformstring({})),
  a!forEach(
    items: local!uniqueCategories,
    expression: index(
      local!data.string,
      
      /* Only pulls back the first string from all the categories */
      index(
        
        /* Identifies the rows that match the same category */
        wherecontains(
          tostring(fv!item),
          touniformstring(local!data.category),
        ),
        1,
        {}
      ),
      {}
    )
  )
)