Next: Octet Molding/Mashing, Previous: Not Included, Up: Top [Contents][Index]
Constructing a typical SQL SELECT query (to be passed to pg-exec)
can be tedious and error prone due to the many string-munging operations
involved. Guile-PG provides some procedures to make things a little easier.
To get started, load the postgres-qcons module:
(use-modules (database postgres-qcons))
This provides procedures to render prefix-style expressions to SQL syntax, essentially by constructing stylized trees (nested lists) and then flattening them to a string on output.
| • Prefix-Style Expressions | ||
| • Special Operators | ||
| • Lookup Tables Extension | ||
| • Quoting | ||
| • Strings | ||
| • Tree Construction | ||
| • Output |