Looking for a source of documentation for Source Expression value in the Field Mapping of FDBatchMove Component, the documentation provided below in the linked help files are slightly lacking:
FireDAC.Comp.BatchMove.TFDBatchMoveMappingItem.SourceExpression:
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HONESTLY, SOMEONE NEEDS TO MAKE THIS A PRIORITY. DELPHI IS A COOL PRODUCT, GREAT ADVANCES RECENTLY BUT WHAT WILL HELP GROW THE DEVELOPER COMMUNITY IS ADEQUATE DOCUMENTATION SO THE PEOPLE WHO ARE TRYING TO USE DELPHI CAN LEVERAGE ALL THE GREAT WORK DONE BEHIND THE SCENE! IF NOBODY KNOWS ABOUT IT THEN WHATS THE POINT TO IMPLEMENT IT! IN ADDITION TO THE DEVELOPER COMMUNITY, EVEN INTERNALLY YOU WOULD THINK THAT THIS SHOULD BE DOCUMENTED BEFORE THOSE WHO CREATED FORGET THE "WHAT/WHEN/WHY"
THIS "STANDARD - DEFAULT" TEXT IN THE HELP FILE DOES NOT EVEN MAKE SENSE, IF I HAVE GONE TO THE HELP FILE TO FIND OUT INFORMATION RELATING TO SYNTAX, INTENDED USE OR BEHAVIOUR HOW WOULD I BE A CANDIDATE TO ASSIST IN DOCUMENTING ?????? IF I KNEW IT I WOULDN'T HAVE HIT "F1"!