There have been a few comments on the design suggesting improvements to the process for generating MQL queries/data using the TPC-H dbgen and qgen tools. These include:

• Modifying dbgen/qgen to generate CSVs instead of |-separated files (note that some strings in the data contain commas)
• Modifying dbgen/qgen to generate SQL queries for portgres or mysql instead
• Converting date fields from strings to ISODates in the csv files before importing them into mongod using mongoimport