From 494f8810b7e6c528a671e9b9a62a923f4c2a6a36 Mon Sep 17 00:00:00 2001
From: Alex Kotov <kotovalexarian@gmail.com>
Date: Sat, 18 Feb 2023 11:43:05 +0400
Subject: [PATCH] Add parts of speech

---
 20230218073436_parts.down.sql |  4 ++++
 20230218073436_parts.up.sql   | 18 ++++++++++++++++++
 2 files changed, 22 insertions(+)
 create mode 100644 20230218073436_parts.down.sql
 create mode 100644 20230218073436_parts.up.sql

diff --git a/20230218073436_parts.down.sql b/20230218073436_parts.down.sql
new file mode 100644
index 0000000..d1b29fd
--- /dev/null
+++ b/20230218073436_parts.down.sql
@@ -0,0 +1,4 @@
+BEGIN;
+ALTER TABLE words DROP COLUMN part_id;
+DROP TABLE parts;
+COMMIT;
diff --git a/20230218073436_parts.up.sql b/20230218073436_parts.up.sql
new file mode 100644
index 0000000..3edf961
--- /dev/null
+++ b/20230218073436_parts.up.sql
@@ -0,0 +1,18 @@
+BEGIN;
+
+CREATE TABLE parts (
+--  name         type      constraints
+    id           BIGSERIAL PRIMARY KEY,
+    language_id  BIGINT    NOT NULL REFERENCES languages (id),
+    english_name VARCHAR   NOT NULL,
+
+--  CONSTRAINT name                      CHECK (condition)
+    CONSTRAINT english_name_is_sane_text CHECK (is_sane_text(english_name))
+);
+
+CREATE UNIQUE INDEX parts_language_english_name
+    ON parts (language_id, english_name);
+
+ALTER TABLE words ADD COLUMN part_id BIGINT REFERENCES parts (id);
+
+COMMIT;