diff --git a/TSG-21.04/clickhouse/drop_cluster.sql b/TSG-21.04/clickhouse/drop_cluster.sql
new file mode 100644
index 0000000..00ca24c
--- /dev/null
+++ b/TSG-21.04/clickhouse/drop_cluster.sql
@@ -0,0 +1,51 @@
+ALTER TABLE tsg_galaxy_v3.connection_record_log_local DROP COLUMN sip_from;
+ALTER TABLE tsg_galaxy_v3.connection_record_log_local DROP COLUMN sip_to;
+ALTER TABLE tsg_galaxy_v3.connection_record_log_local DROP COLUMN sip_from_sdp_connect_ip;
+ALTER TABLE tsg_galaxy_v3.connection_record_log_local DROP COLUMN sip_from_sdp_media_port;
+ALTER TABLE tsg_galaxy_v3.connection_record_log_local DROP COLUMN sip_from_sdp_media_type;
+ALTER TABLE tsg_galaxy_v3.connection_record_log_local DROP COLUMN sip_from_sdp_content;
+ALTER TABLE tsg_galaxy_v3.connection_record_log_local DROP COLUMN sip_to_sdp_connect_ip;
+ALTER TABLE tsg_galaxy_v3.connection_record_log_local DROP COLUMN sip_to_sdp_media_port;
+ALTER TABLE tsg_galaxy_v3.connection_record_log_local DROP COLUMN sip_to_sdp_media_type;
+ALTER TABLE tsg_galaxy_v3.connection_record_log_local DROP COLUMN sip_to_sdp_content;
+ALTER TABLE tsg_galaxy_v3.connection_record_log_local DROP COLUMN rtp_pcap_dir_c2s;
+ALTER TABLE tsg_galaxy_v3.connection_record_log_local DROP COLUMN rtp_pcap_dir_s2c;
+
+ALTER TABLE tsg_galaxy_v3.security_event_log_local DROP COLUMN sip_from;
+ALTER TABLE tsg_galaxy_v3.security_event_log_local DROP COLUMN sip_to;
+ALTER TABLE tsg_galaxy_v3.security_event_log_local DROP COLUMN sip_from_sdp_connect_ip;
+ALTER TABLE tsg_galaxy_v3.security_event_log_local DROP COLUMN sip_from_sdp_media_port;
+ALTER TABLE tsg_galaxy_v3.security_event_log_local DROP COLUMN sip_from_sdp_media_type;
+ALTER TABLE tsg_galaxy_v3.security_event_log_local DROP COLUMN sip_from_sdp_content;
+ALTER TABLE tsg_galaxy_v3.security_event_log_local DROP COLUMN sip_to_sdp_connect_ip;
+ALTER TABLE tsg_galaxy_v3.security_event_log_local DROP COLUMN sip_to_sdp_media_port;
+ALTER TABLE tsg_galaxy_v3.security_event_log_local DROP COLUMN sip_to_sdp_media_type;
+ALTER TABLE tsg_galaxy_v3.security_event_log_local DROP COLUMN sip_to_sdp_content;
+ALTER TABLE tsg_galaxy_v3.security_event_log_local DROP COLUMN rtp_pcap_dir_c2s;
+ALTER TABLE tsg_galaxy_v3.security_event_log_local DROP COLUMN rtp_pcap_dir_s2c;
+
+ALTER TABLE tsg_galaxy_v3.security_event_log DROP COLUMN sip_from;
+ALTER TABLE tsg_galaxy_v3.security_event_log DROP COLUMN sip_to;
+ALTER TABLE tsg_galaxy_v3.security_event_log DROP COLUMN sip_from_sdp_connect_ip;
+ALTER TABLE tsg_galaxy_v3.security_event_log DROP COLUMN sip_from_sdp_media_port;
+ALTER TABLE tsg_galaxy_v3.security_event_log DROP COLUMN sip_from_sdp_media_type;
+ALTER TABLE tsg_galaxy_v3.security_event_log DROP COLUMN sip_from_sdp_content;
+ALTER TABLE tsg_galaxy_v3.security_event_log DROP COLUMN sip_to_sdp_connect_ip;
+ALTER TABLE tsg_galaxy_v3.security_event_log DROP COLUMN sip_to_sdp_media_port;
+ALTER TABLE tsg_galaxy_v3.security_event_log DROP COLUMN sip_to_sdp_media_type;
+ALTER TABLE tsg_galaxy_v3.security_event_log DROP COLUMN sip_to_sdp_content;
+ALTER TABLE tsg_galaxy_v3.security_event_log DROP COLUMN rtp_pcap_dir_c2s;
+ALTER TABLE tsg_galaxy_v3.security_event_log DROP COLUMN rtp_pcap_dir_s2c;
+
+ALTER TABLE tsg_galaxy_v3.connection_record_log DROP COLUMN sip_from;
+ALTER TABLE tsg_galaxy_v3.connection_record_log DROP COLUMN sip_to;
+ALTER TABLE tsg_galaxy_v3.connection_record_log DROP COLUMN sip_from_sdp_connect_ip;
+ALTER TABLE tsg_galaxy_v3.connection_record_log DROP COLUMN sip_from_sdp_media_port;
+ALTER TABLE tsg_galaxy_v3.connection_record_log DROP COLUMN sip_from_sdp_media_type;
+ALTER TABLE tsg_galaxy_v3.connection_record_log DROP COLUMN sip_from_sdp_content;
+ALTER TABLE tsg_galaxy_v3.connection_record_log DROP COLUMN sip_to_sdp_connect_ip;
+ALTER TABLE tsg_galaxy_v3.connection_record_log DROP COLUMN sip_to_sdp_media_port;
+ALTER TABLE tsg_galaxy_v3.connection_record_log DROP COLUMN sip_to_sdp_media_type;
+ALTER TABLE tsg_galaxy_v3.connection_record_log DROP COLUMN sip_to_sdp_content;
+ALTER TABLE tsg_galaxy_v3.connection_record_log DROP COLUMN rtp_pcap_dir_c2s;
+ALTER TABLE tsg_galaxy_v3.connection_record_log DROP COLUMN rtp_pcap_dir_s2c;