XMLEXISTS predicate
Applies to ✅ Open Source Edition ✅ Express Edition ✅ Professional Edition ✅ Enterprise Edition
The XMLEXISTS predicate can be used to check whether an XQuery or XPath expression produces a value within an XML document (see also the XMLQUERY function)
SELECT 1
WHERE xmlexists('/a/b' PASSING '<a><b/></a>')
create.selectOne()
.where(xmlexists("/a/b").passing(XML.valueOf("<a><b/></a>")))
.fetch();
Dialect support
This example using jOOQ:
xmlexists("/a/b").passing(xml("<a><b/></a>"))
Translates to the following dialect specific expressions:
-- DB2, ORACLE, TERADATA
XMLEXISTS(
'/a/b'
PASSING '<a><b/></a>'
)
-- POSTGRES
XMLEXISTS(
'/a/b'
PASSING CAST('<a><b/></a>' AS xml)
)
-- SQLSERVER
('<a><b/></a>'.EXIST('/a/b') = 1)
-- ACCESS, ASE, AURORA_MYSQL, AURORA_POSTGRES, BIGQUERY, COCKROACHDB, DERBY, EXASOL, FIREBIRD, H2, HANA, HSQLDB, INFORMIX,
-- MARIADB, MEMSQL, MYSQL, REDSHIFT, SNOWFLAKE, SQLDATAWAREHOUSE, SQLITE, SYBASE, VERTICA, YUGABYTEDB
/* UNSUPPORTED */
(These are currently generated with jOOQ 3.18, see #10141), or translate your own on our website
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