sync

MDDOC-878 - purge logdb/DocumedisUsageLogs-cleanup-Pharmavista2020UsageLogs.sql

@@ -0,0 +1,28 @@
+USE [DocumedisUsageLogs]
+GO
+
+/*
+MDDOC-878
+
+Purge of the table DocumedisUsageLogs.dbo.Pharmavista2020UsageLogs
+
+Records that are more than 7 months old will be purged.
+
+Deletion is made in batches to avoid locking.
+*/
+CREATE PROCEDURE [purge_Pharmavista2020UsageLogs]
+AS
+BEGIN
+    DECLARE @cutoff DATE = DATEADD(MONTH, -7, CURRENT_TIMESTAMP);
+    DECLARE @batch INT = 5000;
+    DECLARE @row_count INT = 1;
+
+    WHILE @row_count > 0
+    BEGIN
+        DELETE TOP(@batch) s
+        FROM [dbo].[Pharmavista2020UsageLogs] s
+        WHERE [s].[LogDateTime] > @cutoff;
+        
+        SET @row_count = @@rowcount;
+    END
+END