Add table-valued query to test moor file

moor/test/data/tables/custom_tables.g.dart

@@ -1181,11 +1181,18 @@ abstract class _$CustomTablesDb extends GeneratedDatabase {
         readsFrom: {config}).map(_rowToConfig);
   }
 
-  Selectable<Config> findValidJsons() {
+  TableValuedResult _rowToTableValuedResult(QueryRow row) {
+    return TableValuedResult(
+      key: row.readString('key'),
+      value: row.readString('value'),
+    );
+  }
+
+  Selectable<TableValuedResult> tableValued() {
     return customSelectQuery(
-        'SELECT * FROM config WHERE json_valid(config_value)',
+        'SELECT\n   "key", "value"\n  FROM config, json_each(config.config_value)\n  WHERE json_valid(config_value)',
         variables: [],
-        readsFrom: {config}).map(_rowToConfig);
+        readsFrom: {config}).map(_rowToTableValuedResult);
   }
 
   MultipleResult _rowToMultipleResult(QueryRow row) {
@@ -1270,6 +1277,23 @@ abstract class _$CustomTablesDb extends GeneratedDatabase {
       ];
 }
 
+class TableValuedResult {
+  final String key;
+  final String value;
+  TableValuedResult({
+    this.key,
+    this.value,
+  });
+  @override
+  int get hashCode => $mrjf($mrjc(key.hashCode, value.hashCode));
+  @override
+  bool operator ==(dynamic other) =>
+      identical(this, other) ||
+      (other is TableValuedResult &&
+          other.key == this.key &&
+          other.value == this.value);
+}
+
 class MultipleResult {
   final String a;
   final int b;

moor/test/data/tables/tables.moor

@@ -41,7 +41,11 @@ END;
 readConfig: SELECT * FROM config WHERE config_key = ?;
 readMultiple: SELECT * FROM config WHERE config_key IN ? ORDER BY $clause;
 readDynamic: SELECT * FROM config WHERE $predicate;
-findValidJsons: SELECT * FROM config WHERE json_valid(config_value);
+
+tableValued:
+  SELECT "key", "value"
+  FROM config, json_each(config.config_value)
+  WHERE json_valid(config_value);
 
 @create: INSERT INTO config (config_key, config_value) VALUES ('key', 'values');
 

sqlparser/lib/src/reader/parser/expressions.dart

@@ -339,7 +339,12 @@ mixin ExpressionParser on ParserBase {
       }
     }
 
-    _error('Could not parse this expression');
+    if (_peek is KeywordToken) {
+      _error('Could not parse this expressions. Note: This is a reserved '
+          'keyword, you can escape it in double ticks');
+    } else {
+      _error('Could not parse this expression');
+    }
   }
 
   @override