update

sql/old/tmp_table.sql

@@ -0,0 +1,10 @@
+-- CREATE TEMPORARY TABLE tmp_table SELECT distinct text FROM answer
+
+drop table if exists tmp_table;
+CREATE TABLE tmp_table SELECT distinct text FROM answer order by text;
+drop table if exists answer;
+ALTER TABLE tmp_table RENAME answer;
+ALTER TABLE `answer`
+    ADD COLUMN `id` int NOT NULL AUTO_INCREMENT FIRST,
+    ADD PRIMARY KEY (`id`),
+    ADD UNIQUE INDEX(`text`);