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Contents
Preface

Overview
Installation Guide
Quick Start & Tours
Sample ODBC & JDBC Applications
Conceptual Overview
Server Administration
Data Access Interfaces
SQL Reference
SQL Procedure Language Guide
Database Event Hooks
Data Replication, Synchronization and Transformation Services
Web Application Development
XML Support
RDF Database and SPARQL
Web Services
Runtime Hosting
Internet Services
Free Text Search
TPC C Benchmark Kit
Using Virtuoso with Tuxedo
Appendix
Virtuoso Functions Guide

expression

An SQL statement that generates a rowset for v:data-source.
< expression language (optional) debug-srcfile (optional) debug-srcline (optional) debug-log (optional) />
Description

A container for SQL statement generating a rowset or table name (see data-source).

Attributes
language = SqlName

Denotes the type of language, currently only SQL expressions are supported, see 'expression-type' attribute of the data-source control.

debug-srcfile

URI of the source document where the tag comes from.

debug-srcline

Line number in the source document where the tag comes from.

debug-log

This defines what sort of data are saved to the debugging log.