Module large_object 

A value an engine may hold as a large object: how a load compares one, and the unit a length is counted in.

Some engines hold a text column with no length — or bytes, or a document — as a large object (CLOB, NCLOB, BLOB), and such a value is not an ordinary value there: it cannot be grouped or compared directly, and its length may be counted in units other than characters. Razeri asks the dialect about each column with the type the load holds it in (HeldAs), through ExpressionRenderer::render_comparable and ExpressionRenderer::text_length_unit.

Enums

HeldAs

Where a load holds a column when it compares or measures it.

TextLengthUnit

The unit an engine’s text length counts in.