By this point, the flaws are pretty well-documented. If you find anything in the reports about handling of apostrophes, feel free to cite it.
The underlying communication protocol from node to node wasn't even SQL; it was an XML format called "Riposte." There was, perhaps, SQL involved in eventual account database updating, but issues had occurred in message transit even before that phase, and it's those issues that led to account reconciliation errors and (incorrect) charges of fraud on the part of the subpostmasters.
