diff --git a/t/018_column_names.pl b/t/018_column_names.pl
new file mode 100644
index 0000000..e67320b
--- /dev/null
+++ b/t/018_column_names.pl
@@ -0,0 +1,100 @@
+#!/usr/bin/perl
+
+use strict;
+use warnings;
+use File::Basename;
+use File::Compare;
+use File::Copy;
+use String::Util qw(trim);
+use Test::More;
+use lib 't';
+use pgsm;
+
+# Get filename and create out file name and dirs where requried
+PGSM::setup_files_dir(basename($0));
+
+# Create new PostgreSQL node and do initdb
+my $node = PGSM->pgsm_init_pg();
+my $pgdata = $node->data_dir;
+
+# Update postgresql.conf to include/load pg_stat_monitor library
+open my $conf, '>>', "$pgdata/postgresql.conf";
+print $conf "shared_preload_libraries = 'pg_stat_monitor'\n";
+close $conf;
+
+# Dictionary for expected PGSM columns names on different PG server versions
+my %pg_versions_pgsm_columns = ( 15 => "application_name,blk_read_time," .
+    "blk_write_time,bucket,bucket_done,bucket_start_time,calls," .
+    "client_ip,cmd_type,cmd_type_text,comments,cpu_sys_time,cpu_user_time," .
+    "datname,elevel,local_blks_dirtied,local_blks_hit,local_blks_read," .
+    "local_blks_written,max_exec_time,max_plan_time,mean_exec_time," .
+    "mean_plan_time,message,min_exec_time,min_plan_time,planid," .
+    "plans_calls,query,query_plan,queryid,relations,resp_calls," .
+    "rows_retrieved,shared_blks_dirtied,shared_blks_hit,shared_blks_read," .
+    "shared_blks_written,sqlcode,stddev_exec_time,stddev_plan_time," .
+    "temp_blks_read,temp_blks_written,top_query,top_queryid,toplevel," .
+    "total_exec_time,total_plan_time,userid,wal_bytes,wal_fpi,wal_records",
+ 14 => "application_name,blk_read_time," .
+    "blk_write_time,bucket,bucket_done,bucket_start_time,calls," .
+    "client_ip,cmd_type,cmd_type_text,comments,cpu_sys_time,cpu_user_time," .
+    "datname,elevel,local_blks_dirtied,local_blks_hit,local_blks_read," .
+    "local_blks_written,max_exec_time,max_plan_time,mean_exec_time," .
+    "mean_plan_time,message,min_exec_time,min_plan_time,planid," .
+    "plans_calls,query,query_plan,queryid,relations,resp_calls," .
+    "rows_retrieved,shared_blks_dirtied,shared_blks_hit,shared_blks_read," .
+    "shared_blks_written,sqlcode,stddev_exec_time,stddev_plan_time," .
+    "temp_blks_read,temp_blks_written,top_query,top_queryid,toplevel," .
+    "total_exec_time,total_plan_time,userid,wal_bytes,wal_fpi,wal_records",
+ 13 => "application_name,blk_read_time," .
+    "blk_write_time,bucket,bucket_done,bucket_start_time,calls," .
+    "client_ip,cmd_type,cmd_type_text,comments,cpu_sys_time,cpu_user_time," .
+    "datname,elevel,local_blks_dirtied,local_blks_hit,local_blks_read," .
+    "local_blks_written,max_exec_time,max_plan_time,mean_exec_time," .
+    "mean_plan_time,message,min_exec_time,min_plan_time,planid," .
+    "plans_calls,query,query_plan,queryid,relations,resp_calls," .
+    "rows_retrieved,shared_blks_dirtied,shared_blks_hit,shared_blks_read," .
+    "shared_blks_written,sqlcode,stddev_exec_time,stddev_plan_time," .
+    "temp_blks_read,temp_blks_written,top_query,top_queryid,toplevel," .
+    "total_exec_time,total_plan_time,userid,wal_bytes,wal_fpi,wal_records",
+ 12 => "application_name,blk_read_time,blk_write_time,bucket,bucket_done," .
+    "bucket_start_time,calls,client_ip,cmd_type,cmd_type_text,comments," .
+    "cpu_sys_time,cpu_user_time,datname,elevel,local_blks_dirtied," .
+    "local_blks_hit,local_blks_read,local_blks_written,max_time,mean_time," .
+    "message,min_time,planid,query,query_plan,queryid,relations,resp_calls," .
+    "rows_retrieved,shared_blks_dirtied,shared_blks_hit,shared_blks_read," .
+    "shared_blks_written,sqlcode,stddev_time,temp_blks_read,temp_blks_written," .
+    "top_query,top_queryid,total_time,userid,wal_bytes,wal_fpi,wal_records"
+ );
+
+# Start server
+my $rt_value = $node->start;
+ok($rt_value == 1, "Start Server");
+
+# Create extension and change out file permissions
+my ($cmdret, $stdout, $stderr) = $node->psql('postgres', 'CREATE EXTENSION pg_stat_monitor;', extra_params => ['-a']);
+ok($cmdret == 0, "Create PGSM Extension");
+PGSM::append_to_file($stdout . "\n");
+
+# Get PGSM columns names from PGSM installation in server 
+($cmdret, $stdout, $stderr) = $node->psql('postgres', "SELECT column_name  FROM INFORMATION_SCHEMA.COLUMNS WHERE table_name = 'pg_stat_monitor' order by column_name;", extra_params => ['-A', '-R,', '-Ptuples_only=on']);
+ok($cmdret == 0, "Get columns names in PGSM installation for PG version $PGSM::PG_MAJOR_VERSION");
+PGSM::append_to_file($stdout . "\n");
+
+# Compare PGSM column names in installation to expected column names
+ok($stdout eq $pg_versions_pgsm_columns{$PGSM::PG_MAJOR_VERSION}, "Compare supported columns names for PG version $PGSM::PG_MAJOR_VERSION against expected");
+
+# Run Select statement against expected column names
+($cmdret, $stdout, $stderr) = $node->psql('postgres', "Select $pg_versions_pgsm_columns{$PGSM::PG_MAJOR_VERSION} from pg_stat_monitor;", extra_params => ['-a', '-Pformat=aligned','-Ptuples_only=off']);
+ok($cmdret == 0, "Select statement against expected column names");
+PGSM::append_to_file($stdout);
+
+# Drop extension
+$stdout = $node->safe_psql('postgres', 'Drop extension pg_stat_monitor;',  extra_params => ['-a']);
+ok($cmdret == 0, "Drop PGSM  Extension");
+PGSM::append_to_file($stdout);
+
+# Stop the server
+$node->stop;
+
+# Done testing for this testcase file.
+done_testing();