 173 | The FROM clause declares query identification variables that represent iteration over objects in the database. A query identification variable is similar to a variable of a Java enhanced for loop in a program, since both are used for iteration over objects. Range Variables Range variables are query |
104 | Variables The FROM clause in JPA queries (as in SQL) defines the query variables. Query variables are represented in criteria queries by descendant interfaces of the From interface: Range variables (bound by an entity class) are represented by the Root subinterface: Join variables (bound by |
104 | Method javax.jdo.Query void declareVariables( String variables ) Declare the unbound variables to be used in the query. Variables might be used in the filter, and these variables must be declared with their type. The unbound variable declaration is a String containing one or more unbound variable |
94 | Static Field javax.jdo.Constants String OPTION_UNCONSTRAINED_QUERY_VARIABLES "javax.jdo.option.UnconstrainedQueryVariables" Since: JDO 2.1 See Also: PersistenceManagerFactory.supportedOptions() |
63 | classes) are represented in JPQL by the following types of expressions: Variables - FROM identification variables and SELECT result variables. Parameters - when instances of these classes are assigned ... with an instance of a user defined class (represented by a variable, parameter or prefix path expression |
53 | clause declares one or more query variables (also known as identification variables). Query variables are similar to loop variables in programing languages. Each query variable represents iteration over objects in the database. A query variable that is bound to an entity class is referred to as |
41 | JPA JPQL WHERE clause for IN :variable not working if variable is a list of Enums |
41 | variable. Before passing these Country objects to the SELECT clause for collecting as query results ... difference in query execution time if proper indexes are defined. WHERE Filter in Multi Variable Queries In a multi-variable query the FROM clause defines iteration on tuples. In this case the WHERE clause |
33 | instances:
DELETE FROM Country // no variable
DELETE FROM Country c // an optional variable
DELETE FROM Country AS c // AS + an optional variable ObjectDB supports using the java.lang ... cannot include multiple variables and JOIN, and cannot include the GROUP BY, HAVING and ORDER BY clauses |
33 |
Alias variables are referred to as result variables to distinguish them from the identification variables that are defined in the FROM clause. Order Direction (ASC, DESC) The default ordering direction ... "))); Unlike other methods for setting criteria query clauses - the orderBy method takes a variable number |