pub fn parse_composite_unique_attribute(
raw: &str,
) -> Result<Vec<String>, String>Expand description
Parses @@unique([field1, field2, ...]) into its ordered list of
local field names. Callers are responsible for checking that each
name resolves to a real scalar field on the model.
The order is significant: it is the column order of the emitted
unique index, and it feeds the index name
(<table>_<col1>_<col2>_key), so reordering the list is a rename.