Why are there no statements there? Why does it not compile the statement based on the base?

In Java, "statements" usually refer to SQL statements (PreparedStatement, Statement). If the question is about the absence of statements in a certain context, such as in ORM or another tool, the reason may be that SQL query compilation does not occur on the database side in advance.

Reasons for the absence of statement compilation on the database:

• Dynamic query formation is used, which cannot be pre-compiled.
• Lack of use of PreparedStatement, which allows compiling the query once and executing it multiple times with different parameters.
• Some drivers or databases do not support prepared statements or do so inefficiently.

Using PreparedStatement can improve performance and security (protection against SQL injection), as the query is compiled once, and parameters are inserted separately.

Example of using PreparedStatement:

String sql = "SELECT * FROM users WHERE id = ?";
PreparedStatement ps = connection.prepareStatement(sql);
ps.setInt(1, userId);
ResultSet rs = ps.executeQuery();