feat(editor): configure SQL completion column ordering

Closes #5955

apps/desktop/src/lib/editor/sqlCompletionPresentation.ts

@@ -4,6 +4,12 @@ export interface CompletionLabelPresentation {
   sortText?: string;
 }
 
+export interface CompletionSortItem {
+  label: string;
+  sortText?: string;
+  type?: string;
+}
+
 export function completionLabelPresentation(label: string, filterText?: string): CompletionLabelPresentation {
   const normalizedFilterText = filterText?.trim();
   if (!normalizedFilterText || label.toLowerCase().startsWith(normalizedFilterText.toLowerCase())) return { label };
@@ -13,3 +19,8 @@ export function completionLabelPresentation(label: string, filterText?: string):
     sortText: label,
   };
 }
+
+export function compareSqlCompletions(a: CompletionSortItem, b: CompletionSortItem, sortColumnsAlphabetically: boolean): number {
+  if (!sortColumnsAlphabetically && a.type === "column" && b.type === "column") return 0;
+  return (a.sortText || a.label).localeCompare(b.sortText || b.label);
+}