Why Does `executeQuery()` Throw an Error When Manipulating Data in MySQL?

executeQuery() Cannot Manipulate Data

In MySQL, when attempting to execute a sequence of queries using executeQuery() for both, you may encounter an error indicating that data manipulation statements cannot be issued.

This error occurs because executeQuery() is designed to retrieve data from the database. When you need to modify data, you should use executeUpdate() instead.

executeQuery() vs. executeUpdate()

• executeQuery(): Used to retrieve data from the database. Does not affect data.
• executeUpdate(): Used to manipulate data in the database, such as updating, inserting, or deleting records.

In the given code snippet:

executeQuery(query1);
executeQuery(query2);

Both queries attempt to manipulate data, but they use the incorrect method. To fix this error, replace executeQuery() with executeUpdate() for queries that modify data. Here's the corrected example:

executeUpdate(query1);
executeUpdate(query2);

Remember, when working with data manipulation statements in MySQL, always use executeUpdate() rather than executeQuery().

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