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Prepared Statement in Java

Use JDBC PreparedStatement for parameterized SQL queries and repeated database operations.

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  • PreparedStatement is a Java interface in the java.sql package, extending Statement for executing parameterized SQL queries.
  • Precompiled Queries: SQL statements are precompiled and stored, improving performance for repeated executions.
  • Parameterized Queries: Uses placeholders (?) for dynamic values, set via methods like setInt(), setString(), etc.
  • Prevents SQL Injection: Automatically escapes special characters, enhancing security over raw SQL concatenation.
  • Improved Performance: Reduces parsing overhead for repeated queries, as the database caches the execution plan.
  • Type-Safe Data Handling: Ensures correct data types for parameters, reducing runtime errors.
  • Batch Execution: Supports batch processing for executing multiple statements efficiently.
  • Close Resources: Must be closed (e.g., pstmt.close()) to free database resources.
  • Use Cases: Ideal for dynamic queries, frequent executions, or when security is critical.
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