apache derby retrieve data
To retrieve data from a table in Apache Derby, you can use the SELECT
statement. Here is the basic syntax:
SELECT column1, column2, column3, ... FROM table_name WHERE condition;Source:wwigi.wftidea.com
Here is an example of retrieving data from a table in Apache Derby:
SELECT name, age, email FROM students WHERE age > 30;
In this example, we are selecting the name
, age
, and email
columns from the students
table where the age
column is greater than 30. The WHERE
clause is used to filter the rows returned by the query based on a specific condition.
You can also use the ORDER BY
clause to sort the results by a specific column or columns, like this:
SELECT name, age, email FROM students WHERE age > 30 ORDER BY name ASC;
This statement selects the same columns as the previous example, but it also sorts the results in ascending order by the name
column.
You can use a variety of functions, operators, and keywords in your SELECT
statement to customize your query results. You can also use joins, subqueries, and grouping functions to combine data from multiple tables or aggregate data into groups. The SELECT
statement is one of the most powerful tools in Apache Derby for retrieving and analyzing data from your database.