migration script seems to work

Signed-off-by: jamal-khey <[email protected]>

Author: jamal-khey

src/main/resources/db/changelog/changesets/migrate_limit_reduction_data_reset-all.sql

@@ -0,0 +1,36 @@
+-- BEGIN;
+
+-- part 1 - delete element from List<LimitReductionEntity> limitReductions;
+DELETE
+FROM limit_reduction_entity_reductions
+WHERE index >= 5;
+
+
+-- part 2 - add element into LimitReductionEntity
+UPDATE limit_reduction_entity_reductions
+SET reductions = 1.0
+WHERE index < 6;
+
+-- Insert missing values up to 6 elements
+INSERT INTO limit_reduction_entity_reductions (limit_reduction_entity_id, index, reductions)
+SELECT
+    lre.id,
+    numbers.index,
+    1.0
+FROM limit_reduction_entity lre
+         CROSS JOIN (
+    SELECT 0 as index UNION ALL
+    SELECT 1 UNION ALL
+    SELECT 2 UNION ALL
+    SELECT 3 UNION ALL
+    SELECT 4 UNION ALL
+    SELECT 5
+) numbers
+WHERE NOT EXISTS (
+    SELECT 1
+    FROM limit_reduction_entity_reductions lr
+    WHERE lr.limit_reduction_entity_id = lre.id
+      AND lr.index = numbers.index
+);
+
+-- ROLLBACK;