Why Does \"Cannot issue data manipulation statements with executeQuery()\" Error Occur?

"Cannot issue data manipulation statements with executeQuery()" Explained

Problem: When attempting to execute queries that manipulate data (e.g., INSERT, UPDATE, DELETE) using the executeQuery() method, the following error occurs: "Cannot issue data manipulation statements with executeQuery()".

Explanation:

The executeQuery() method is designed to execute queries that retrieve data, such as SELECT statements. It does not have the ability to modify data in the database. To manipulate data, you should use the executeUpdate() method.

Solution:

To resolve this error, replace the executeQuery() method with executeUpdate() for the queries that modify data. For example, if your query is an INSERT statement:

Original:

<code class="JAVA">executeQuery("INSERT INTO tableA (name) VALUES ('John');");</code>

Corrected:

<code class="java">executeUpdate("INSERT INTO tableA (name) VALUES ('John');");</code>

Note: The executeUpdate() method returns an integer representing the number of rows affected by the query.

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