row display column

common/proto/table_definition.proto

@@ -80,6 +80,10 @@ message PostTableDefinitionRequest {
 
   // ISO-4217 base currency used by every MONEY column in this table.
   string base_currency = 6;
+
+  // Column whose value identifies a row to users in pickers. "id" is always
+  // valid; otherwise this must name one of the user-defined columns above.
+  string row_display_column = 7;
 }
 
 // Defines append-only column additions for an existing table.
@@ -157,6 +161,9 @@ message ProfileTreeResponse {
 
     // Other tables this one references (based on link definitions only).
     repeated string depends_on = 3;
+
+    // Column whose value is used as the human-readable row label.
+    string row_display_column = 4;
   }
 
   // Profile (schema) entry.
@@ -231,6 +238,7 @@ message TableDetail {
   repeated ColumnDefinition columns = 3;
   repeated ScriptInfo scripts = 4;
   string base_currency = 5;
+  string row_display_column = 6;
 }
 
 // A script that targets a specific column in a table.