DOCUMENT predicate
Applies to ✅ Open Source Edition ✅ Express Edition ✅ Professional Edition ✅ Enterprise Edition
The DOCUMENT predicate can be used to check if a given expression is an XML document (as opposed to toher XML content).
SELECT 1 WHERE '<xml/>' IS DOCUMENT AND '<!-- comment -->' IS NOT DOCUMENT
create.selectOne()
.where(val("<xml/>").isDocument())
.and(val("<!-- comment -->").isNotDocument())
.fetch();
Dialect support
This example using jOOQ:
AUTHOR.FIRST_NAME.isDocument()
Translates to the following dialect specific expressions:
-- POSTGRES AUTHOR.FIRST_NAME IS DOCUMENT -- ACCESS, ASE, AURORA_MYSQL, AURORA_POSTGRES, BIGQUERY, COCKROACHDB, DB2, DERBY, EXASOL, FIREBIRD, H2, HANA, HSQLDB, -- INFORMIX, MARIADB, MEMSQL, MYSQL, ORACLE, REDSHIFT, SNOWFLAKE, SQLDATAWAREHOUSE, SQLITE, SQLSERVER, SYBASE, TERADATA, VERTICA, -- YUGABYTEDB /* UNSUPPORTED */
(These are currently generated with jOOQ 3.18, see #10141), or translate your own on our website
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