fts_texts 增加 id created_at updated_at字段

db/postgresql/migrations/2021-12-09-120136_fts_texts_add_id/down.sql

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+-- This file should undo anything in `up.sql`
+
+ALTER TABLE fts_texts DROP COLUMN updated_at;
+ALTER TABLE fts_texts DROP COLUMN created_at;
+ALTER TABLE fts_texts DROP CONSTRAINT fts_texts_pkey;
+ALTER TABLE fts_texts DROP COLUMN id;

db/postgresql/migrations/2021-12-09-120136_fts_texts_add_id/up.sql

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+-- Your SQL goes here
+
+ALTER TABLE fts_texts ADD id SERIAL PRIMARY KEY;
+ALTER TABLE fts_texts ADD created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP;
+ALTER TABLE fts_texts ADD updated_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP;