I want to make a date type variable. Locally I am using a h2-database. But I am deploying into a cloud with a Hana DB. Hana has the exact Date format I am needing: SECONDDATE (YYYY-MM-DD HH24:MI:SS). …
Tag: java
What to use: sql migration or entity setups in Spring/Hibernate?
I am little confused, when see, why most programmers use annotation-based setup for database table constraints. For example @Column(unique=true, nullable=false) Why do we need that, if(as I heard) …
I’m trying to update the values of a table SQL have an error in Java
I’m trying to update the values of a table, but it throws an error that I have not been able to determine. If you visualize it it would help me, this is what it throws by console: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that cor…
Need a Query to fetch distinct data from a table in my sql
I have a table History which contains below columns: I need a query to fetch data from a table in a manner that every user should return only one row for the day even if a user has more than one entry for a day The required resultset should be as below : Answer You can group by User and
How to add entity to the databse without adding related entitiy in DB as well?
I have a problem adding one entity using JPA save without error : JdbcSQLIntegrityConstraintViolationException: NULL not allowed for column because i add empty entity to the object i want to save. how can i save one entity and tell it’s related one to ignore this transaction? For example i have student …
exception is happening and I don’t no why
I keep getting this exception. I want to insert using a query into a table called Toy. It’s in this order as below: Toy ID, Toy Name, age, price(as currency data type), color Exception: invalid …
Problems with SQLiteException: no such table
I have a database with two tables and every time I try to add a new item to the second table it says that there is no such table. Please help. DatabaseHelper: The add method from DatabaseHelper: The place where the new item creation is: Answer you may have changed the schema and did not increase the db versio…
Dynamic update query for multiple columns using spring MVC
I am having a JSON data as shown below: I need a query to be executed and should be in the below form I am using Spring MVC for processing this and the code I wrote is as follows. It is not complete. It would be very much helpful if someone could help me out here. Thanks in advance. Answer
For SQL Server database getting “com.microsoft.sqlserver.jdbc.SQLServerException:The statement must be executed before any results can be obtained.”
I am getting above error when trying to perform insert operation from java application using JDBCTemplate. org.springframework.jdbc.UncategorizedSQLException: PreparedStatementCallback; uncategorized SQLException for SQL []; SQL state [null]; error code [0]; The statement must be executed before any results c…
translate sql to criteriaBuilder
Hello everyone, i dont now how to change sql request in CriteriaBuilder. I am stuck on this line: I will be very grateful for your help or at least links to interesting material. Answer maybe to someone helps