Heres a quick query to purge all test data except customers.

 

SET FOREIGN_KEY_CHECKS=0;

TRUNCATE `catalogsearch_query`;

ALTER TABLE `catalogsearch_query` AUTO_INCREMENT=1;

TRUNCATE `sales_order`;

TRUNCATE `sales_order_datetime`;

TRUNCATE `sales_order_decimal`;

TRUNCATE `sales_order_entity`;

TRUNCATE `sales_order_entity_datetime`;

TRUNCATE `sales_order_entity_decimal`;

TRUNCATE `sales_order_entity_int`;

TRUNCATE `sales_order_entity_text`;

TRUNCATE `sales_order_entity_varchar`;

TRUNCATE `sales_order_int`;

TRUNCATE `sales_order_text`;

TRUNCATE `sales_order_varchar`;

TRUNCATE `sales_flat_quote`;

TRUNCATE `sales_flat_quote_address`;

TRUNCATE `sales_flat_quote_address_item`;

TRUNCATE `sales_flat_quote_item`;

TRUNCATE `sales_flat_quote_item_option`;

TRUNCATE `sales_flat_order_item`;

TRUNCATE `sendfriend_log`;

TRUNCATE `tag`;

TRUNCATE `tag_relation`;

TRUNCATE `tag_summary`;

TRUNCATE `wishlist`;

TRUNCATE `log_quote`;

TRUNCATE `report_event`;

TRUNCATE `log_customer`;

TRUNCATE `log_quote`;

TRUNCATE `log_summary`;

TRUNCATE `log_summary_type`;

TRUNCATE `log_url`;

TRUNCATE `log_url_info`;

TRUNCATE `log_visitor`;

TRUNCATE `log_visitor_info`;

TRUNCATE `log_visitor_online` ;

ALTER TABLE `log_customer` AUTO_INCREMENT=1;

ALTER TABLE `log_quote` AUTO_INCREMENT=1;

ALTER TABLE `log_summary` AUTO_INCREMENT=1;

ALTER TABLE `log_summary_type` AUTO_INCREMENT=1;

ALTER TABLE `log_url` AUTO_INCREMENT=1;

ALTER TABLE `log_url_info` AUTO_INCREMENT=1;

ALTER TABLE `log_visitor` AUTO_INCREMENT=1;

ALTER TABLE `log_visitor_info` AUTO_INCREMENT=1;

ALTER TABLE `log_visitor_online` AUTO_INCREMENT=1;

ALTER TABLE `sales_order` AUTO_INCREMENT=1;

ALTER TABLE `sales_order_datetime` AUTO_INCREMENT=1;

ALTER TABLE `sales_order_decimal` AUTO_INCREMENT=1;

ALTER TABLE `sales_order_entity` AUTO_INCREMENT=1;

ALTER TABLE `sales_order_entity_datetime` AUTO_INCREMENT=1;

ALTER TABLE `sales_order_entity_decimal` AUTO_INCREMENT=1;

ALTER TABLE `sales_order_entity_int` AUTO_INCREMENT=1;

ALTER TABLE `sales_order_entity_text` AUTO_INCREMENT=1;

ALTER TABLE `sales_order_entity_varchar` AUTO_INCREMENT=1;

ALTER TABLE `sales_order_int` AUTO_INCREMENT=1;

ALTER TABLE `sales_order_text` AUTO_INCREMENT=1;

ALTER TABLE `sales_order_varchar` AUTO_INCREMENT=1;

ALTER TABLE `sales_flat_quote` AUTO_INCREMENT=1;

ALTER TABLE `sales_flat_quote_address` AUTO_INCREMENT=1;

ALTER TABLE `sales_flat_quote_address_item` AUTO_INCREMENT=1;

ALTER TABLE `sales_flat_quote_item` AUTO_INCREMENT=1;

ALTER TABLE `sales_flat_quote_item_option` AUTO_INCREMENT=1;

ALTER TABLE `sales_flat_order_item` AUTO_INCREMENT=1;

ALTER TABLE `sendfriend_log` AUTO_INCREMENT=1;

ALTER TABLE `tag` AUTO_INCREMENT=1;

ALTER TABLE `tag_relation` AUTO_INCREMENT=1;

ALTER TABLE `tag_summary` AUTO_INCREMENT=1;

ALTER TABLE `wishlist` AUTO_INCREMENT=1;

ALTER TABLE `log_quote` AUTO_INCREMENT=1;

ALTER TABLE `report_event` AUTO_INCREMENT=1;

 

SET FOREIGN_KEY_CHECKS=1;