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12.4.2. HQL Statements
HQL allows
SELECT
, UPDATE
, DELETE
, and INSERT
statements. The HQL INSERT
statement has no equivalent in JPQL.
Important
Care should be taken as to when an
UPDATE
or DELETE
statement is executed.
Statement | Description |
---|---|
SELECT |
The BNF for
SELECT statements in HQL is:
The simplest possible HQL
SELECT statement is of the form:
from com.acme.Cat
|
UDPATE | The BNF for UPDATE statement in HQL is the same as it is in JPQL |
DELETE | The BNF for DELETE statements in HQL is the same as it is in JPQL |