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11-20 of 200 resultsRefreshDELETE Queries in JPA/JPQL to the database by calling the commit method. JPQL DELETE queries provide an alternative way for deleting entity objects. Unlike query/jpql/select">SELECT queries, which are used to retrieve data from the database, DELETE queries do not | |
UPDATE SET Queries in JPA/JPQL> method. JPQL UPDATE queries provide an alternative way of updating entity objects. Unlike query/jpql/select">SELECT queries, which are used to retrieve data from the database, UPDATE queries do not retrieve data from the database | |
Criteria Query From Elements The interfaces in this group are in use for setting a criteria query FROM clause. Criteria Query Variables The query/jpql/from">FROM clause in JPA queries (as in SQL) defines the query variables. Query variables are represented in | |
Criteria Query Selection and Results BY clauses and for representing query results as tuples. SELECT Clause Elements The content of the SELECT clause in a criteria query is represented by Selection: query/criteria/select" select="Selection"> | |
Chapter 4 - JPA Queries (JPQL / Criteria) The JPA Query Language (JPQL) can be considered as an object oriented version of SQL ... queries in JPA, based on JPQL. The first section describes the API that JPA provides for using dynamic and static (named) queries. It explains how to use the relevant interfaces, annotations | |
Date and Time in JPQL and Criteria Queries Date and time expressions may appear in JPQL queries: as query/jpql/literal#date_and_time_literals">date and time literals - e.g. {d '2011-12-31'}, {t '23:59:59'}. as query/parameter | |
Numbers in JPQL and Criteria Queries Numeric values may appear in JPQL queries in many forms: as query/jpql/literal#numeric_literals">numeric literals - e.g. 123, -12.5. as query/parameter">parameters | |
Literals in JPQL and Criteria Queries>). JPQL literals should be used sparingly as queries that use query ... JPQL queries when a single constant value is always used and never replaced. query/jpql/comparison">Comparison Operators page | |
Strings in JPQL and Criteria Queries String values may appear in JPQL queries in various forms: as query/jpql/literal#string_literals">string literals - e.g. 'abc', ''. as query/parameter">parameters - when string values | |
Collections in JPQL and Criteria Queries Collections may appear in JPQL queries: as query/parameter">parameters - when collections are assigned as arguments. as query/jpql/path">path expressions - in navigation to persistent collection fields |