fix(vastbase): preserve schema for result inserts

apps/desktop/src/lib/metadata/tableMetadataCache.ts

@@ -160,14 +160,17 @@ export async function loadTableMetadata(request: TableMetadataRequest): Promise<
       scope,
       async () => {
         // Column discovery can be especially slow on Oracle. Start row-identity
-        // discovery independently so query preflight can reuse it without waiting.
+        // discovery independently unless an unqualified Vastbase relation must
+        // first report its visible schema for the index lookup.
+        const resolveVastbaseSchema = request.databaseType === "vastbase" && !request.schema;
         const columnsPromise = api.getColumns(request.connectionId, request.database, request.schema ?? "", request.tableName, request.catalog);
-        const indexesPromise = loadTableIndexes(request).catch((): IndexInfo[] => []);
+        const indexesPromise = resolveVastbaseSchema ? undefined : loadTableIndexes(request).catch((): IndexInfo[] => []);
         const columns = await columnsPromise;
-        const indexes = columns.length > 0 ? await indexesPromise : [];
+        const resolvedSchema = resolveVastbaseSchema ? columns.find((column) => column.resolved_schema)?.resolved_schema : request.schema;
+        const indexes = columns.length > 0 ? await (indexesPromise ?? loadTableIndexes({ ...request, schema: resolvedSchema }).catch((): IndexInfo[] => [])) : [];
         const primaryKeys = editableRowIdentifierColumns(request.databaseType as DatabaseType, columns, indexes, request.tableType);
         return {
-          schema: request.schema || undefined,
+          schema: resolvedSchema || undefined,
           tableName: request.tableName,
           tableType: request.tableType,
           catalog: request.catalog,

apps/desktop/src/stores/queryStore.ts

@@ -3487,7 +3487,11 @@ export const useQueryStore = defineStore("query", () => {
     // Oracle-family connection databases are service names, not schemas. When
     // the query does not qualify a schema, let the driver resolve the current
     // login user's schema instead of looking up metadata under the service name.
-    const resolvedSchema = (dbType === "sqlserver" && !source.schema) || (ORACLE_LIKE_METADATA_TYPES.has(dbType) && !schema) ? "" : metadataSchemaForConnection(conn, metadataDatabase, schema || undefined);
+    // An unqualified Vastbase query runs in the connection's current
+    // search_path. Do not reinterpret the selected database as a schema; the
+    // agent resolves the visible relation's actual namespace with the columns.
+    const useCurrentVastbaseSchema = dbType === "vastbase" && !source.schema && !tab.schema;
+    const resolvedSchema = (dbType === "sqlserver" && !source.schema) || (ORACLE_LIKE_METADATA_TYPES.has(dbType) && !schema) || useCurrentVastbaseSchema ? "" : metadataSchemaForConnection(conn, metadataDatabase, schema || undefined);
     const metadataSchema = normalizeUppercaseFoldedMetadataIdentifier(dbType, resolvedSchema || undefined, source.schema ? source.schemaQuoted : false) || "";
     const metadataTableName = normalizeUppercaseFoldedMetadataIdentifier(dbType, source.tableName, source.tableNameQuoted)!;
     const metadataCatalog = normalizeUppercaseFoldedMetadataIdentifier(dbType, source.catalog, source.catalogQuoted);
@@ -3519,13 +3523,14 @@ export const useQueryStore = defineStore("query", () => {
   }
 
   function loadedEditableSourceFromMetadata(target: EditableSourceMetadataTarget, metadata: Awaited<ReturnType<typeof loadTableMetadata>>["metadata"]): LoadedEditableSource {
+    const writeSchema = target.request.databaseType === "vastbase" && !target.writeSchema ? metadata.schema : target.writeSchema;
     return {
       source: target.source,
       analysis: target.analysis,
       tableMeta: {
         catalog: target.request.catalog,
         database: target.request.database,
-        schema: target.writeSchema,
+        schema: writeSchema,
         tableName: target.request.tableName,
         tableType: metadata.tableType,
         columns: metadata.columns,

apps/desktop/src/types/database.ts

@@ -537,6 +537,7 @@ export interface CustomTypeDetails {
 export interface ColumnInfo {
   name: string;
   data_type: string;
+  resolved_schema?: string;
   is_nullable: boolean;
   column_default: string | null;
   is_primary_key: boolean;