JDBC --> Prepared Statement -->  Error: Invalid parameter number

Posted on 2003-03-24
Medium Priority
Last Modified: 2012-08-14
Im writing a program that takes a whole dump load of data from a raw file and sticks it into a database table.
Im using a prepared statement that has 22 question marks in it... all of them strings.  The error is occuring when i try to do executeUpdate() on my statement.  Im sorry i dont have any more points..  but i would appreciate any help anyone could give me...  Thanks.

the error i get is:
COM.ibm.db2.jdbc.DB2Exception: [IBM][JDBC Driver] CLI0612E  Invalid parameter number. SQLSTATE=S1093
     at COM.ibm.db2.jdbc.net.SQLExceptionGenerator.throwParamIndexError(SQLExceptionGenerator.java:483)
     at COM.ibm.db2.jdbc.net.DB2PreparedStatement.setString(DB2PreparedStatement.java:1220)
     at COM.ibm.db2.jdbc.net.DB2PreparedStatement.setString(DB2PreparedStatement.java:1203)
     at Parser.addUpdateToBatch(Parser.java:72)
     at Parser.<init>(Parser.java:117)
     at Parser.main(Parser.java:144)

my simplified code:

import java.io.*;
import java.sql.*;

public class Parser {
     private final int NUM_OF_FIELDS = 22;    

     private final String TEMPLATE_TABLE = "Template";
     private final String SCHEMA = "myData";
     private final String TABLE_LIST_TABLE = "table_list";

     private final String connectionUrl = "jdbc:db2:DTTDATA";
     private final String username = "username";
     private final String password = "pass";
     private String[] fields = new String[NUM_OF_FIELDS];
     static {
          try {
          } catch (Exception e) {}    
     private String getCreateTableSQL(String table) {
          String sql = new String("");
          sql = "create table " + SCHEMA + "." + table + " like " + SCHEMA + "." + TEMPLATE_TABLE;
          return sql;
     private String getInsertSQL(String tableName) {
          String sql = new String("Insert into " + SCHEMA + "." + tableName + " Values ( '?'");
          for (int i = 1; i < NUM_OF_FIELDS; i++) {
               sql += ", '?'";
          sql += ")";
          return sql;
     private void addUpdateToBatch(PreparedStatement s) {
          try {
               for (int i = 0; i < NUM_OF_FIELDS; i++) {
                    s.setString(i+1, fields[i]);    
          } catch (SQLException e) {
     private Parser( File outputFile, String tableName) {
          System.out.println((new Date()).toString());
          try {
                Connection dbConnection= DriverManager.getConnection(connectionUrl, username, password);
               BufferedReader br = new BufferedReader (new FileReader (outputFile));
               String defectData = null;
               while ( (defectData = br.readLine()) != null) {
                    defectData = defectData.replace('\'', '`').replace('"', '`');                    
                    /* parse data from defectData into fields array!*/
          } catch (IOException e) {
          } catch (SQLException e) {
Question by:RighteousRaven
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Expert Comment

ID: 8199619
Can you post your main  method also . It looks like you need to pass less than 22 params in prepare statement(Invalid parameter number).

Accepted Solution

amit_chauhan earned 270 total points
ID: 8199738
Dont put ' (single quote) before and after '?' in the method getInsertSQL. The method will be like this :

    private String getInsertSQL(String tableName) {
         StringBuffer sql = new StringBuffer("Insert into " + SCHEMA + "." + tableName + " Values ( ?");
         for (int i = 1; i < NUM_OF_FIELDS; i++) {
              sql.append (", ?");
         sql.append (")");
         return sql.toString ();

See if it works.
Couldnt find anything else thats wrong.

LVL 30

Expert Comment

by:Mayank S
ID: 8200841
>>  sql += ", '?'";

You don't need to give single quotes around the question mark symbol.

>> Invalid parameter number

This error generally comes only when the number of arguments to PreparedStameent is violated. Please verify if you have 22 or 21 columns or not. (Are all of them Strings?).


Author Comment

ID: 8202612
Thanks everyone!

i think i got it working....  and the problem was the single quotes around the placeholders...

thanks for your help all!


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