. Java
Java PreparedStatement
java.sql.PreparedStatement
a PreparedStatement example
PreparedStatement preparedStatement =
connection.prepareStatement(
"Select favoritefood from favoritefoods where catname = ?");
preparedStatement.setString(1, "Cappuccino");
ResultSet resultSet = preparedStatement.executeQuery();
//now run the SQL
PreparedStatement methods to execute the SQL
preparedStatementName.execute(); //will execute any SQL
preparedStatementName.executeQuery(); //will execute a query
preparedStatementName.executeUpdate(); //will execute an insert, update, or delete
PreparedStatement methods to set fields
preparedStatementName.setArray( intOfPositionToSet, arrayToSet);
preparedStatementName.setBigDecimal( intOfPositionToSet, bigDecimalToSet);
preparedStatementName.setBlob( intOfPositionToSet, blobToSet); //must be using JDBC 2.0 or above
preparedStatementName.setByte( intOfPositionToSet, byteToSet); //uses primitive byte
preparedStatementName.setBytes( intOfPositionToSet, byteArrayToSet); //uses primitive byte array
preparedStatementName.setClob( intOfPositionToSet, clobToSet); //must be using JDBC 2.0 or above
preparedStatementName.setDate( intOfPositionToSet, dateToSet); //uses java.sql.Date
preparedStatementName.setDate( intOfPositionToSet, dateToSet, calendarToUse); //JDBC 2.0 and above //uses java.sql.Date & java.util.Calendar
preparedStatementName.setDouble( intOfPositionToSet, doubleToSet); //uses primitive double preparedStatementName.setFloat( intOfPositionToSet, floatToSet); //uses primitive float
preparedStatementName.setInt( intOfPositionToSet, intToSet); //uses primitive int preparedStatementName.setLong( intOfPositionToSet, longToSet); //uses primitive long
preparedStatementName.setObject( intOfPositionToSet, objectToSet);
preparedStatementName.setObject( intOfPositionToSet, objectToSet, intTargetSqlType); //sql types: (see java.sql.Types below) preparedStatementName.setObject( intOfPositionToSet, objectToSet, intTargetSqlType); //sql types: (see java.sql.Types below) //for java.sql.Types.DECIMAL or java.sql.Types.NUMERIC // specifies number of digits after the decimal. preparedStatementName.setRef( intOfPositionToSet, refToSet); //JDBC 2.0 and above //uses java.sql.Ref specifying a // SQL structured type value in the database.
preparedStatementName.setShort( intOfPositionToSet, shortToSet); //uses primitive short preparedStatementName.setString( intOfPositionToSet, stringToSet); preparedStatementName.setTime( intOfPositionToSet, timeToSet); //uses java.sql.Time
preparedStatementName.setTime( intOfPositionToSet, timeToSet, calendarToUse); //JDBC 2.0 and above //uses java.sql.Time & java.util.Calendar preparedStatementName.setTimestamp( intOfPositionToSet, timeStampToSet); //uses java.sql.Timestamp
preparedStatementName.setTimestamp( intOfPositionToSet, timeStampToSet, calendarToUse); //JDBC 2.0 and above //uses java.sql.Timestamp & java.util.Calendar
PreparedStatement methods to set streams
preparedStatementName.setAsciiStream(
intOfPositionToSet, asciiStreamToSet, intOfStreamLength);
//sets a java.io.InputStream
preparedStatementName.setBinaryStream(
intOfPositionToSet, binaryStreamToSet, intOfStreamLength);
//sets a java.io.InputStream
preparedStatementName.setCharacterStream(
intOfPositionToSet, readerObjectToGetCharStreamFrom,
intOfStreamLength);
//must be using JDBC 2.0 or above
//sets a java.io.Reader
PreparedStatement methods to set nulls
preparedStatementName.setNull( intOfPositionToSet, sqlType); //sql types: (see java.sql.Types below) preparedStatementName.setNull( intOfPositionToSet, sqlType, stringTypeName); //sql types: (see java.sql.Types below) //sql type names: user named or REF type parameters. // examples of users named: STRUCT, DISTINCT, // JAVA_OBJECT, and named array types.
java.sql.Types
java.sql.Types.ARRAY java.sql.Types.BIGINT java.sql.Types.BINARY java.sql.Types.BIT java.sql.Types.BLOB (JDBC 2.0 and above) java.sql.Types.CHAR java.sql.Types.CLOB (JDBC 2.0 and above) java.sql.Types.DATE java.sql.Types.DECIMAL java.sql.Types.DISTINCT (JDBC 2.0 and above) java.sql.Types.DOUBLE java.sql.Types.FLOAT java.sql.Types.INTEGER java.sql.Types.JAVA_OBJECT (JDBC 2.0 and above) java.sql.Types.LONGVARBINARY java.sql.Types.LONGVARCHAR java.sql.Types.NULL java.sql.Types.NUMERIC java.sql.Types.OTHER java.sql.Types.REAL java.sql.Types.REF (JDBC 2.0 and above) java.sql.Types.SMALLINT java.sql.Types.STRUCT (JDBC 2.0 and above) java.sql.Types.TIME java.sql.Types.TIMESTAMP java.sql.Types.TINYINT java.sql.Types.VARBINARY java.sql.Types.VARCHAR
PreparedStatement methods to alter what is in the PreparedStatement
preparedStatementName.clearParameters(); //clears all parameters
References
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