# SetCatalogColumnAsPrimary > Type in domain **Catalogs** - HTML: [SetCatalogColumnAsPrimary.html](SetCatalogColumnAsPrimary.html) - Raw SDL: [SetCatalogColumnAsPrimary.sdl](SetCatalogColumnAsPrimary.sdl) - Covered by: [llms.txt](../llms.txt) ## Fields - `column`: `CatalogColumn!` _(beta)_ — The `CatalogColumn` that was just set as primary key.