From 1dbf4b868f886b7ba34db9c40bae3d810b9ddf90 Mon Sep 17 00:00:00 2001
From: Alex Kotov <kotovalexarian@gmail.com>
Date: Sat, 11 Feb 2023 09:09:19 +0400
Subject: [PATCH] Add words

---
 20230211045705_words.down.sql |  5 +++++
 20230211045705_words.up.sql   | 25 +++++++++++++++++++++++++
 2 files changed, 30 insertions(+)
 create mode 100644 20230211045705_words.down.sql
 create mode 100644 20230211045705_words.up.sql

diff --git a/20230211045705_words.down.sql b/20230211045705_words.down.sql
new file mode 100644
index 0000000..171e69f
--- /dev/null
+++ b/20230211045705_words.down.sql
@@ -0,0 +1,5 @@
+BEGIN;
+DROP TABLE word_form_example_texts;
+DROP TABLE word_forms;
+DROP TABLE words;
+COMMIT;
diff --git a/20230211045705_words.up.sql b/20230211045705_words.up.sql
new file mode 100644
index 0000000..0796111
--- /dev/null
+++ b/20230211045705_words.up.sql
@@ -0,0 +1,25 @@
+BEGIN;
+
+CREATE TABLE words (
+    id BIGSERIAL PRIMARY KEY,
+    language_id BIGINT NOT NULL REFERENCES languages (id),
+    primary_form VARCHAR NOT NULL,
+    CONSTRAINT primary_form_is_sane_text CHECK (is_sane_text(primary_form))
+);
+
+CREATE TABLE word_forms (
+    id BIGSERIAL PRIMARY KEY,
+    word_id BIGINT NOT NULL REFERENCES words (id),
+    value VARCHAR NOT NULL,
+    CONSTRAINT value_is_sane_text CHECK (is_sane_text(value))
+);
+
+CREATE TABLE word_form_example_texts (
+    id BIGSERIAL PRIMARY KEY,
+    word_form_id BIGINT NOT NULL REFERENCES word_forms (id),
+    example_text_id BIGINT NOT NULL REFERENCES example_texts (id)
+);
+
+CREATE UNIQUE INDEX word_forms_word_value_index ON word_forms (word_id, value);
+
+COMMIT;