PreparedStatement interface

The PreparedStatement interface creates an object that represents a precompiled SQL statement.

A SQL statement is pre-compiled and stored in a PreparedStatement object. This object can then be used to efficiently execute this statement multiple times.

java.sql package

public interface PreparedStatement

extends Statement

Tabelle 101 lists the methods in the PreparedStatement interface that are supported by DB2 Everyplace.

Tabelle 101. PreparedStatement interface methods

Method return value type Method
void clearParameters() Clears the current parameter values immediately.
boolean execute() Executes any kind of SQL statement.
ResultSet executeQuery() Executes the SQL query in this PreparedStatement object and returns the result set generated by the query.
int executeUpdate() Executes the SQL INSERT, UPDATE or DELETE statement in this PreparedStatement object.
void setBigDecimal (int parameterIndex, BigDecimal x) Sets the designated parameter to a java.lang.BigDecimal value. This method is not available in the DB2 Everyplace JDBC driver for Palm OS.
void setBoolean (int parameterIndex, boolean x) Sets the designated parameter to a Java boolean value. The DB2 Everyplace JDBC driver converts this to an SQL SMALLINT value when it sends it to the database.
void setBlob(int i, Blob x) JDBC 2.0 Sets a BLOB parameter.
void setBytes(int parameterIndex, byte[ ]x) Sets the designated parameter to a Java array of bytes.
void setDate(int parameterIndex, Date x) Sets the designated parameter to a java.sql.Date value.
void setDouble(int parameterIndex, double x) Sets the designated parameter to a Java double value. The DB2 Everyplace JDBC driver converts this to an SQL DECIMAL value when it sends it to the database.
void setFloat(int parameterIndex, float x) Sets the designated parameter to a Java float value.

When a BigDecimal is converted to float, if the BigDecimal is too large to represent as a float, it will be converted to FLOAT.NEGATIVE_INFINITY or FLOAT.POSITIVE_INFINITY as appropriate.

void setInt (int parameterIndex, int x) Sets the designated parameter to a Java int value.
void setLong(int parameterIndex, long x) Sets the designated parameter to a Java long value.
void setNull (int parameterIndex, int sqlType) Sets the designated parameter to SQL NULL.
void setObject(int parameterIndex, Object x, int targetSqlType) Sets the value of the designated parameter with the given object.

DB2 Everyplace restrictions:

  • targetSqlType must correspond with one of the data types DB2 Everyplace supports.
  • The basic and String conversions are supported. For example, if targetSqlType is Types.INTEGER, x should be either an Integer or a String object.
  • If targetSqlType is Types.DECIMAL, x can also be a Double, Float, or Long object.
  • If targetSqlType is Types.SMALLINT, x can also be a Boolean object.
  • On Palm OS, if targetSqlType is Types.DECIMAL, x should be a String object.
void setShort (int parameterIndex, short x) Sets the designated parameter to a Java short value.
void setString (int parameterIndex, String x) Sets the designated parameter to a Java String value.
void setTime (int parameterIndex, Time x) Sets the designated parameter to a java.sql.Time value.
void setTimestamp (int parameterIndex, Timestamp x) Sets the designated parameter to a java.sql.Timestamp value.

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