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- Add/fix details to description and examples to illustrate - indicate string for geom_to_wkt
17 lines
1.0 KiB
Plaintext
17 lines
1.0 KiB
Plaintext
{
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"name": "concatenate_unique",
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"type": "function",
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"groups": ["Aggregates"],
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"description": "Returns all unique strings from a field or expression joined by a delimiter.",
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"arguments": [
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{"arg":"expression", "description":"sub expression of field to aggregate"},
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{"arg":"group_by", "optional":true, "description":"optional expression to use to group aggregate calculations"},
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{"arg":"filter", "optional":true, "description":"optional expression to use to filter features used to calculate aggregate"},
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{"arg":"concatenator", "optional":true, "description":"optional string to use to join values. Empty by default."},
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{"arg":"order_by", "optional":true, "description":"optional expression to use to order features used to calculate aggregate. By default, the features will be returned in an unspecified order."}
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],
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"examples": [
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{ "expression":"concatenate_unique(\"town_name\",group_by:=\"state\",concatenator:=',')", "returns":"comma separated list of unique town_names, grouped by state field"}
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]
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}
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