From 69dbc7742b7cc617a8f1cade5f478cf851b85e45 Mon Sep 17 00:00:00 2001
From: Paul Trowbridge <fleetside72@hotmail.com>
Date: Sun, 2 Dec 2018 00:59:00 -0500
Subject: [PATCH] work on upgrade query to adjust schema and leave sources in
 place

---
 .../upgrade_scripts/001.extract_schemas.sql   | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)
 create mode 100644 database/upgrade_scripts/001.extract_schemas.sql

diff --git a/database/upgrade_scripts/001.extract_schemas.sql b/database/upgrade_scripts/001.extract_schemas.sql
new file mode 100644
index 0000000..39a01a7
--- /dev/null
+++ b/database/upgrade_scripts/001.extract_schemas.sql
@@ -0,0 +1,19 @@
+SELECT 
+    srce
+    ,jsonb_pretty(defn)
+    ,jsonb_pretty((defn - 'schemas')||
+    --rebuild the schemas key value from below
+    jsonb_build_object(
+        'schemas'
+        --aggregate all the new key values for a single soure
+        ,jsonb_agg(
+            --combine a new key 'name' with the columns for that name
+            jsonb_build_object('name',k)||jsonb_build_object('columns',v)
+        )
+    ))
+FROM 
+    tps.srce
+    LEFT JOIN LATERAL jsonb_each(defn->'schemas') WITH ORDINALITY je(k,v, rn) ON TRUE
+GROUP BY
+    srce
+    ,defn
\ No newline at end of file