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 3.17, see #10141), or translate your own on our website

The jOOQ User Manual : SQL building : Conditional expressions : XMLEXISTS predicate

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