To address this need, RTTS created QuerySurge, the only testing tool built specifically to automate the testing of data warehouses and the ETL process. With the help of MySQL, QuerySurge ensures that the data extracted from sources remains intact by analyzing and pinpointing any differences in the data (down to a single character) between each leg of the ETL process. QuerySurge automates data warehouse test design, management, scheduling, execution, analysis and reporting. QuerySurge testing is up to 100 times faster than manual testing, and vastly more comprehensive, with the ability to test up to 100% of the data. In addition, QuerySurge is able to do all of this without any effect on data warehouse performance beyond running the test queries.