fix(desktop): scope SQL alias completions to columns

apps/desktop/src/components/editor/QueryEditor.vue

@@ -917,7 +917,9 @@ async function performAsyncCompletionWithResult(
     }
   }
 
-  const shouldLoadTables = completionContext.suggestTables || !!completionContext.qualifier;
+  const shouldLoadTables =
+    completionContext.suggestTables ||
+    (!!completionContext.qualifier && !isReferencedTableQualifier(completionContext));
   let tables = shouldLoadTables
     ? await connectionStore.listCompletionTables(
         props.connectionId!,
@@ -1075,6 +1077,14 @@ async function performAsyncCompletionWithResult(
   return buildCompletionResult(items, position, completionContext.prefix.length, fullDoc);
 }
 
+function isReferencedTableQualifier(completionContext: ReturnType<typeof getSqlCompletionContext>): boolean {
+  if (!completionContext.qualifier) return false;
+  const qualifier = completionContext.qualifier.toLowerCase();
+  return completionContext.referencedTables.some(
+    (table) => table.alias?.toLowerCase() === qualifier || table.name.toLowerCase() === qualifier,
+  );
+}
+
 async function refreshCompletionCache() {
   cachedTables = [];
   cachedColumnsByTable.clear();

apps/desktop/src/lib/sqlCompletion.ts

@@ -1926,6 +1926,12 @@ function buildJoinConditionItemsForPair(
       ) {
         boost = 1800;
       }
+      // Pattern 7: Generic FK column → id when table names do not reveal the relationship.
+      else if (leftName !== "id" && leftName.endsWith("_id") && rightName === "id") {
+        boost = 1650;
+      } else if (rightName !== "id" && rightName.endsWith("_id") && leftName === "id") {
+        boost = 1650;
+      }
 
       if (!boost) continue;
       const label = `${leftLabel} = ${rightLabel}`;