From 233426bb7ab19420a47c24b97e9b6b8851ee8cfd Mon Sep 17 00:00:00 2001
From: Errol Samuels <ewsamuels@gmail.com>
Date: Tue, 5 Jul 2016 08:28:06 +0100
Subject: [PATCH] pg_cdr_migration.sql

CDR migration script for Postgres.  Migrates CDRs from the old cdrs_primary, rated_cdrs, cdrs_extra and cost_details tables into the single cdrs table.
---
 data/storage/postgres/pg_cdr_migration.sql | 38 ++++++++++++++++++++++
 1 file changed, 38 insertions(+)
 create mode 100644 data/storage/postgres/pg_cdr_migration.sql

diff --git a/data/storage/postgres/pg_cdr_migration.sql b/data/storage/postgres/pg_cdr_migration.sql
new file mode 100644
index 000000000..f22a7beb6
--- /dev/null
+++ b/data/storage/postgres/pg_cdr_migration.sql
@@ -0,0 +1,38 @@
+/*
+This script will migrate CDRs from the old CGRateS tables to the new cdrs table
+but it only migrate CDRs where the duration is > 0.
+If you need CDRs also with duration is = 0 you can make the appropriate change in the line beginning WHERE cdrs_primary.usage
+
+Also the script will process 10,000 CDRs before committing to save system resources 
+especially in systems where they are millions of CDRs to be migrated
+You can increase or lower the value of step in the line after BEGIN below.
+*/
+
+DO $$
+DECLARE
+    count_cdrs integer;
+    start_id integer;
+    end_id integer;
+    step integer;
+BEGIN
+	step := 10000;
+	start_id := 0;
+	end_id := start_id + step;
+	select count(*) INTO count_cdrs from rated_cdrs;
+	WHILE start_id < count_cdrs
+	LOOP
+		INSERT INTO 
+			cdrs(cgrid,run_id,origin_host,source,origin_id,tor,request_type,direction,tenant,category,account,subject,destination,setup_time,pdd,answer_time,usage,supplier,disconnect_cause,extra_fields,cost_source,cost,cost_details,extra_info, created_at, updated_at, deleted_at) 
+			SELECT cdrs_primary.cgrid,rated_cdrs.runid as run_id,cdrs_primary.cdrhost as origin_host,cdrs_primary.cdrsource as source,cdrs_primary.accid as origin_id, cdrs_primary.tor,rated_cdrs.reqtype as request_type,rated_cdrs.direction, rated_cdrs.tenant,rated_cdrs.category, rated_cdrs.account, rated_cdrs.subject, rated_cdrs.destination,rated_cdrs.setup_time,rated_cdrs.pdd,rated_cdrs.answer_time,rated_cdrs.usage,rated_cdrs.supplier,rated_cdrs.disconnect_cause,cdrs_extra.extra_fields,cost_details.cost_source,rated_cdrs.cost,cost_details.timespans as cost_details,rated_cdrs.extra_info,rated_cdrs.created_at,rated_cdrs.updated_at, rated_cdrs.deleted_at 
+			FROM rated_cdrs 
+			INNER JOIN cdrs_primary ON rated_cdrs.cgrid = cdrs_primary.cgrid 
+			INNER JOIN cdrs_extra ON rated_cdrs.cgrid = cdrs_extra.cgrid 
+			INNER JOIN cost_details ON rated_cdrs.cgrid = cost_details.cgrid 
+			WHERE cdrs_primary.usage > '0'
+			AND not exists (select 1 from cdrs c where c.cgrid = cdrs_primary.cgrid)
+			;
+		start_id = start_id + step;
+		end_id = end_id + step;
+	END LOOP;
+END 
+$$;