Abstract: This disclosure proposes systems, methods, and apparatus that identify raw SQL queries that are likely to cause a double counting error, and if such a SQL query is identified, then convert the raw SQL query into SQL queries that account for and avoid double counting. In some embodiments, this process uses queries and subqueries that refer back to a common table expression (CTE) in order to reduce code length and increase query execution speed.

Abstract: This disclosure describes systems, methods, and apparatus for expanding a row or column in an existing report, sourced from a relational database, where a column or row, respectively, of an opposite axis has already been expanded. Such a need often arises in reports sourced from a SQL database, and overcomes the storage-draining need to pre-compute all possible arrangements of data from the database prior to displaying the report. In some embodiments, a client can make a request for a multi-axis expansion, and a server can create filters for use in sub queries, one for each level of expansion in an axis of the report opposite to the axis where expansion is requested, the sub queries can be executed, results sets can be combined/formatted to form a new report, and the new report can be returned to the client for stitching into the existing report.