To retrieve data from a table in HSQLDB, you can use the SELECT statement. Here's a basic example of how to retrieve data from a table:
SELECT column1, column2, ...
FROM table_name;?
Replace
column1, column2, etc., with the names of the columns you want to retrieve data from, and replace
table_name with the name of the table you want to retrieve data from.
If you want to retrieve data from all columns in the table, you can use the wildcard * :
SELECT *
FROM table_name;?
Here's a more concrete example :
SELECT employee_id, first_name, last_name
FROM Employee;?
This SQL query retrieves the
employee_id,
first_name, and
last_name columns from the Employee table.
You can also apply filters to retrieve specific rows based on certain conditions using the
WHERE clause :
SELECT *
FROM Employee
WHERE department_id = 1;?
This query retrieves all columns from the
Employee table where the
department_id is equal to 1.
Once you've executed the
SELECT statement, the database will return the result set containing the requested data based on your query. You can then process the result set in your application or
SQL client as needed.
