The query SELECT * FROM books WHERE (isbn || ‘ ‘ || author || ‘ ‘ || name) ILIKE ‘%el%’ returns from the full db when executed in pgAdmin (PostgreSQL tool) But the same query doesn’t seem to work when I try to run it in Spring Boot, it returns an empty list. I do not …
Tag: database
Looking for Java Multithreaded Client-Server chat application with database tutorial
Im trying to build a Java Multithreaded Client-Server chat application with a database. The database is to store username and password. I am able to build a basic Java Multithreaded Client-Server chat application, but have no idea how to create the database side. Ive found lots of downloadable source code but…
Room database RawQuery() is not work on “IN” and “NOT IN” clause
I have my one table like UserTable. // Now in My MainActivity.class file, I have use following code: My query is running in normal database, but when I was pass array of user ids then, in @RawQuery() method of dao class is not supported for “IN” clause used in where condition “WHERE userId I…
executeUpdate() returns always 1 with MERGE statement
ExecuteUpdate() is always returning 1. Pls suggest and appreciate any input. Procedure: Java code: stmt.executeUpdate() – always returns 1, even though insertion happens only once. Appreciate any inputs on this. Ideally, if there are no insertions or errors, it should return 0 or any exception trace. Pl…
How to check if timestamp between two timestamps postgres?
I am working on a spring api where I am using postgres and saving a field of type timestamp with field name as created_date. Now I want to check whether this field is between two different timestamps. Right now I am using this: Is there a way I can use BETWEEN here for this operation? Answer You can do it
How do I work out the entity relationships in my game collection database?
I have a game collection application where I want to create seperate lists of games. I am using Spring JPA and Hibernate in the backend and this is what the Entity classes look like right now. I am not sure if this is even the right approach… In the end, I want to create a Spring Boot application where …
Spring Hibernate SQL Server – problem in updating columns
I get the below error while not updating the mentioned column at all. I only update two another columns that one of them is used to compute the column “Available”. The column “Available” cannot be modified because it is either a computed column or is the result of a UNION operator. I a…
Save a Resultset to an Array in java
I want to save the result of a whole Mysql table in an array it returns this to me from the database run: brandon Brandon Julio Daniel BUILD SUCCESSFUL (total time: 1 second) I want to save what is in the database in an array to be able to implement it with a sort and search method that’s why I
After trying to test connection to h2 database or connect whitelabel error occurs
After running Spring boot project and going to localhost:8080/h2-console and after trying to connect to my database I get whitelabel error when i click any button on h2-console screen. I am using in memory database. I am trying to connect to database with classic username:sa and password:(blank) Even after cl…
Is it possible to search all tables in MySQL workbench database with java preparedstatement SQL in order to change a value?
I have several tables like this in a Schema/Database (the Schema is called “user”) in MySQL workbench: Suppose Sarah gets a score change to 5. I want to update all of her scores in all of the tables in which she exists, to be 5. So then the 3 tables would look like this: Is this possible to do usi…