Migrations for linking genotype files.

1 files changed, 24 insertions, 0 deletions

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..de348c0
--- /dev/null
+++ b/migrations/auth/20230410_02_WZqSf-create-mrna-resources-table.py
@@ -0,0 +1,24 @@
+"""
+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
+        (
+          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 (data_link_id) REFERENCES linked_mrna_data(data_link_id)
+            ON UPDATE CASCADE ON DELETE RESTRICT
+        ) WITHOUT ROWID
+        """,
+        "DROP TABLE IF EXISTS mrna_resources")
+]