Database.Esqueleto.Internal.ExprParser

A type representing the access of a table value. In Esqueleto, we get a guarantee that the access will look something like:

escape-char [character] escape-char . escape-char [character] escape-char
            ^^^^^^^^^^^                           ^^^^^^^^^^^
            table name                            column name

Parse a SqlExpr (Value Bool)'s textual representation into a list of TableAccess

This function uses the connEscapeName function in the SqlBackend with an empty identifier to pull out an escape character. This implementation works with postgresql, mysql, and sqlite backends.