[#boost-urls-static_url-set_encoded_query]
= xref:boost.adoc[boost]::xref:boost/urls.adoc[urls]::xref:boost/urls/static_url.adoc[static&lowbar;url]::set&lowbar;encoded&lowbar;query
:relfileprefix: ../../../
:mrdocs:

Set the query

== Synopsis

Declared in `&lt;https://www.github.com/boostorg/url/blob/develop/include/boost/url/static_url.hpp#L414[boost&sol;url&sol;static&lowbar;url&period;hpp]&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:boost/urls/static_url.adoc[static&lowbar;url]&
set&lowbar;encoded&lowbar;query(xref:boost/urls/pct_string_view.adoc[pct&lowbar;string&lowbar;view] s);
----

== Description

This sets the query to the string, which may contain percent&hyphen;escapes and can be empty&period; An empty query is distinct from having no query&period; Escapes in the string are preserved, and reserved characters in the string are percent&hyphen;escaped in the result&period;

== Example

[,cpp]
----
assert( url( "http://example.com" ).set_encoded_query( "id=42" ).encoded_query() == "id=42" );
----
== Postconditions

[,cpp]
----
this->has_query() == true && this->query() == decode_view( s );
----
== Exception Safety

Strong guarantee&period; Calls to allocate may throw&period; Exceptions thrown on invalid input&period;

== BNF

[,cpp]
----
query           = *( pchar / "/" / "?" )

query-param     = key [ "=" value ]
query-params    = [ query-param ] *( "&" query-param )
----
== Specification

* https://datatracker.ietf.org/doc/html/rfc3986#section-3.4[3&period;4&period;  Query (rfc3986)]
* https://en.wikipedia.org/wiki/Query_string[Query string (Wikipedia)]

== Return Value

`&ast;this`

== Parameters

[cols=2]
|===
| Name
| Description
| *s*
| The string to set&period;
|===

== See Also

xref:boost/urls/url_base/encoded_params-0b.adoc[`encoded&lowbar;params`], xref:boost/urls/url_base/params-0c1.adoc[`params`], xref:boost/urls/static_url/remove_query.adoc[`remove&lowbar;query`], xref:boost/urls/static_url/set_query.adoc[`set&lowbar;query`]&period;


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