mssql indexes analyse WIP

plugins/dbgate-plugin-mssql/src/backend/sql/indexcols.js

@@ -0,0 +1,7 @@
+module.exports = `
+select c.object_id, c.index_id, c.column_id, c.is_descending_key, c.is_included_column from sys.index_columns c
+
+where c.object_id =OBJECT_ID_CONDITION
+order by c.key_ordinal
+
+`;