Technical notes

Notes from real problems.

Short technical write-ups about problems, debugging, reports, databases, printing, web systems, and the lessons worth keeping.

01 Oracle Reports

Clean headings, rows, totals, triggers, and avoiding strange exported output.

02 Oracle / SQL

Joins, duplicate serials, report groups, and checking whether the data actually exists.

03 Printing / Support

Page sizes, margins, frames, printer drivers, and printable areas.