# 22. Virtuoso Functions Guide - concat

Chapter Contents | Prev | Next
Keyword Search:
www.openlinksw.com
docs.openlinksw.com
Book Home
Contents
Preface
Virtuoso Functions Guide
Administration
Aggregate Functions
Array Manipulation
BPEL APIs
Backup
Compression
Cursor
Date & Time Manipulation
Debug
Dictionary Manipulation
Encoding & Decoding
File Manipulation
Free Text
Hashing / Cryptographic
LDAP
Locale
Mail
Miscellaneous
Number
Remote SQL Data Source
Replication
SOAP
SQL
String
Transaction
Type Mapping
UDDI
User Defined Types & The CLR
Virtuoso Java PL API
Virtuoso Server Extension Interface (VSEI)
Web Server & Internet
XML
XPATH & XQUERY
and
append
assign
avg
boolean
ceiling
concat
contains
count
create-attribute
create-comment
create-element
create-pi
current
distinct
doc
document
document-literal
empty
ends-with
every
except
false
filter
floor
fn:collection
for
format-number
function-available
generate-id
id
if
intersect
is_after()
is_before()
key
lang
last
let
list()
local-name
max
min
name
namespace-uri
normalize-space
not
number
or
position
processxquery
processxslt
processxsql
progn()
replace()
round
serialize
shallow
some
starts-with
string
string-length
substring
substring-after
substring-before
sum
system-property
text_contains()
translate
true
tuple()
union
unordered
unparsed-entity-uri
urlify
xmlview
Functions Index

## concat

Returns the concatenation of its arguments.
string concat ( strg1 string, strg2 string, ... , strgN string);
Description

The function converts all its arguments into strings using the same rules as XPATH function string(), then it performs concatenation and returns the resulting string.

XPATH 1.0 standard states that concat() function must have at least 2 arguments, but in Virtuoso XPATH this restriction is eliminated. concat() may be called without arguments (it will return an empty string) or with one argument (it will work like string() function). This may be useful if the text of XPATH expression must be generated by an application.

Parameters
strgI – String or a value of any type which may be converted into a string.
Return Types

Examples

    concat('Order ', @orderno, ' dated ', @issuedate)

See Also

string()