From 8b7c598407a5fea9a3d78473e72df87606998cd4 Mon Sep 17 00:00:00 2001
From: Frederick Muriuki Muriithi
Date: Fri, 4 Aug 2023 10:10:28 +0300
Subject: Copy over files from GN3 repository.

---
 ...0230410_02_WZqSf-create-mrna-resources-table.py | 28 ++++++++++++++++++++++
 1 file changed, 28 insertions(+)
 create mode 100644 migrations/auth/20230410_02_WZqSf-create-mrna-resources-table.py

(limited to 'migrations/auth/20230410_02_WZqSf-create-mrna-resources-table.py')

diff --git a/migrations/auth/20230410_02_WZqSf-create-mrna-resources-table.py b/migrations/auth/20230410_02_WZqSf-create-mrna-resources-table.py
new file mode 100644
index 0000000..2ad1056
--- /dev/null
+++ b/migrations/auth/20230410_02_WZqSf-create-mrna-resources-table.py
@@ -0,0 +1,28 @@
+"""
+Create mRNA resources table
+"""
+
+from yoyo import step
+
+__depends__ = {'20230410_01_8mwaf-create-linked-mrna-data-table'}
+
+steps = [
+    step(
+        """
+        CREATE TABLE IF NOT EXISTS mrna_resources
+        -- Link mRNA data to specific resource
+        (
+          group_id TEXT NOT NULL,
+          resource_id TEXT NOT NULL, -- A resource can have multiple items
+          data_link_id TEXT NOT NULL,
+          PRIMARY KEY (resource_id, data_link_id),
+          UNIQUE (data_link_id) -- ensure data is linked to single resource
+          FOREIGN KEY (group_id, resource_id)
+            REFERENCES resources(group_id, resource_id)
+            ON UPDATE CASCADE ON DELETE RESTRICT,
+          FOREIGN KEY (data_link_id) REFERENCES linked_mrna_data(data_link_id)
+            ON UPDATE CASCADE ON DELETE RESTRICT
+        ) WITHOUT ROWID
+        """,
+        "DROP TABLE IF EXISTS mrna_resources")
+]
-- 
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