Module no_data 

on_empty: what an output does when its queries return no rows.

Each empty query applies its own on_empty first: continue keeps its empty section, skip drops its tab (or per-query file), fail fails the run. Then, if every query of the output is empty or dropped, the output’s on_empty decides. A query’s explicit setting wins over the output’s, with a warning that says so. “Empty” means 0 rows: a count(*) returning 0 is one row.

Structs

Decision

What to do with one output.

Query

One query of an output: its name, its rows, and its own on_empty if it sets one.

Enums

OnEmpty

on_empty: on an output or a query entry.

Functions

decide

Decide what output (the output’s own setting, if any) does about its queries. droppable: whether a query’s section can be left out (false for html, pdf and messages, whose template decides).