I am trying to insert a data into a table. After executing the query i am getting an exception stating
org.postgresql.util.PSQLException: No results were returned by the query.
org.postgresql.jdbc2.AbstractJdbc2Statement.executeQuery(AbstractJdbc2Statement.java:284)
The data is getting inserted successfully, but i have no idea why i am getting this exception ??
Use
executeUpdate
instead of
executeQuery
if no data will be returned (ie a non- SELECT
operation).
Please use annotion over the annotion.注释上使用注释。
@Modifying @Query(value = "UPDATE Users set coins_balance = coins_balance + :coinsToAddOrRemove where user_id = :user_id", nativeQuery = true) int updateCoinsBalance(@Param("user_id") Long userId, @Param("coinsToAddOrRemove") Integer coinsToAddOrRemove);
The same is true for any DML query (ie DELETE, UPDATE or INSERT)
使用 @Modifying 和 @Transaction 修复了我
If you want last generated id, you can use this code after using executeUpdate() method
int update = statement.executeUpdate()
ResultSet rs = statement.getGeneratedKeys();
if (rs != null && rs.next()) {
key = rs.getLong(1);
}
The problem that brought me to this question was a bit different - I was getting this error when deleting rows using an interface-based Spring JPA Repository. The cause was that my method signature was supposed to return some results:
@Modifying
@Query(value = "DELETE FROM table t WHERE t.some_id IN (:someIds)", nativeQuery = true)
List<Long> deleteBySomeIdIn(@Param("someIds") Collection<Long> someIds);
Changing the return type to void
resolved the issue:
@Modifying
@Query(value = "DELETE FROM table t WHERE t.some_id IN (:someIds)", nativeQuery = true)
void deleteBySomeIdIn(@Param("someIds") Collection<Long> someIds);
I have solved this Problem using addBatch
and executeBatch
as following:
statement.addBatch("DELETE FROM public.session_event WHERE id = " + entry.getKey());
statement.executeBatch();
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