I’m new to JDBC and using the following code to update the row using MySQL JDBC driver. I have no idea why executeUpdate() is not updating the content in the database. Can anyone help me? Answer Your query string is wrong. It should be something like this: Look here for the proper syntax of update: https://www.mysqltutorial.org/mysql-jdbc-update Also if you want
Tag: jdbc
Provide SSL certificate to SQL Server via JDBC
The Microsoft JDBC SSL documentation details the use of a Java keystore in order to specify a certificate bundle to use when validating the TLS connection. Is there a way to provide a certificate bundle without needing to store it within a JKS when connecting to a SQL Server database? Postgres seems to have a sslrootcert option which appears to
Mapping between DB2 XML CLOB data type and DB2 JDBC types are keep changing as upgrading to different JDBC versions
We were using com.ibm.db2.jcc.db2jcc4 v10.1 and recently we have upgraded it with the V11.1.4 FP5 driver for the z/OS Db2 systems. When we were using com.ibm.db2.jcc.db2jcc4 v10.1 the equivalent JDBC java class for DB2 XML CLOB was com.ibm.db2.jcc.am.ne and now after upgrading it with V11.1.4 FP5 driver now, it changed to com.ibm.db2.jcc.am.db. However in latest version v11.5 M7 FP0 it’s
Check if any value in list satisfies a condition
Suppose I have the following table called Seasons: … start_month end_month … 2 6 … 3 4 … … … I need to write a query which, for a given list of months, returns all the Seasons that satisfy the condition where at least 1 month in the list is: start_month <= month <= end_month. I’ve written this query as
How to elegantly convert from MSSQL Datetime2 to java.time.Instant
I have a simple spring boot REST API application, using plain jdbc to fetch data from a MSSQL DB. I am trying to figure out how best to retrieve a DATETIME2 column from the DB (which stores no timezone info), and serialize it as a UTC timestamp (and treat it as such in general in code). My DB server timezone
Universal solution to insert Userinput values in MySQL database with a priori unknown columns with Java and for example PreparedStatements
I want to insert a whole set of values in my table in MySQL (e.g. This works in MySQL Workbench 8.0 but not in my Java Code. I read the JavaDoc about prepared Statements but I didn’t find any clues on inserting values if I don’t know the type a priori. My Java code looks like this: I tried many
Error while querying tables using hibernate
I am trying to query a table called student in MySQL. This is the structure: Here is the java code which I use to query: This is the error message: Here is the image of the referenced libraries: Insertion into table is working correctly. Only querying isn’t. What is the error here? Please comment if extra information is needed. UPDATE:
How to change id column type already registered in the database
I’m trying to change my Id column type from int to bigInt because the records are too big and I’m getting an error if I try to store more records but I’m not sure if it’s safe to just alter the table like this: I’m using Java Springboot to create the entities and Hibernate for persistence. What’s the best way
Result set is empty but query works in Postgres
I’m trying to get some results from Postgres into my Java application. As of now, I always used PreparedStatements with ResultSets to get data from my database in memory. But today my code refuses to work, although I use the same code as usual. Here is my piece of code: Here is the log: The ArrayList explicitCollectionsIds is empty/not filled
Compiling a function or procedure using JDBC removes all records from all_statements view
After I execute/compile a stored procedure/function, I query the all_statements view to extract the statements that were in the stored procedure/function like below: However, one of my applications run the following code: Whenever this code is run, the all_statements view is cleared. Even if I execute this same function like below: There are no new entries in all_statements showing the