Download hsql database manager tool

Save the program into CreateTable. However, you need to be very careful while deleting any existing table as any data lost will not be recovered after deleting a table. Following is the query to drop a table named employee.

You have to provide the user-defined data following the column field order from the table. To insert a string type data into a table, you will have to use double or single quotes to provide string value into the insert query statement. Take a look at the given program. Save the code into the InserQuery. Here, you need to mention the required fields list in the Select statement.

By default, offset is zero. Following is the query for the example. Save the following code into the SelectQuery. We can filter the record data by using conditions.

Here is an example that retrieves the details such as id, title, and the author of the book titled "Learn C". Following is the query for the same. Save the following code into WhereClause. Let us consider an example that updates the title of the tutorial from "Learn C" to "C and Data Structures" having an id "". Following is the query for the update. Save the following program into the UpdateQuery.

Following is the query that implements the given example. Here is the JDBC program that implements the given example. Save the following program into DeleteQuery. But there may be a requirement where we want to filter out all the results where the author name should contain "john".

Let us consider an example that retrieves the list of tutorials data where the author name starts with John. Following is the JDBC program that retrieves the list of tutorials data where the author name starts with John. Save the code into LikeClause. By default, it's in an ascending order. Save the following program into OrderBy.

You can use multiple tables in your single SQL query. Now, let us try to retrieve the data of the customers and the order amount that the respective customer placed. This means we are retrieving the record data from both customers and orders table.

Following is the JOIN query for the same. The query compares each row of table1 with each row of table2 to find all pairs of rows, which satisfy the join-predicate. When the join-predicate is satisfied, the column values for each matched pair of rows A and B are combined into a result row. This means that if the ON clause matches 0 zero records in the right table, the join will still return a row in the result, but with NULL in each column from the right table.

This means that a left join returns all the values from the left table, plus matched values from the right table or NULL in case of no matching join predicate. This means that if the ON clause matches 0 zero records in the left table, the join will still return a row in the result, but with NULL in each column from the left table. This means that a right join returns all the values from the right table, plus matched values from the left table or NULL in case of no matching join predicate.

The joined table will contain all records from both tables, and fill in NULLs for the missing matches on either side. A NULL value in a table is a value in a field that appears to be blank. Connect and share knowledge within a single location that is structured and easy to search. In the directory of the database files run:.

Some of the best features compared to other tools: Auto completion for tables and columns in SQL statements, Code formatting etc. Stack Overflow for Teams — Collaborate and share knowledge with a private group.

Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. Asked 10 years, 11 months ago. Active 2 years, 6 months ago. Viewed 71k times. Improve this question. There is no "the best" tool. Look for one, that fullfills most of your requirements. Execute Query is pretty good also executequery. Or you can use the operations separately. If you already have JDK installation in your system, then try the following command to verify the Java version.

Once you click the link, you will get the following screenshot. Finally, you will get the zip file named hsqldb After extraction, you will get a file structure as shown in the following screenshot. Let us create a properties file named server.