trying to update an Access Database

[dav3]

HI again folks. I spent my weekend coding a function to do statistical analysis on a time series and to my amazement it works without a hitch. I even verified my results were correct with excel. I am having an issue passing these values to my database table. All JDBC drivers are loaded correctly as I can "hard-code" a String and pass run executeUpdate() and it works. Of course I cannot hard-code my entire project.

//update masterTable 
              String sqlRecord ="Update MasterTable set [Slope] = "+beta1+" WHERE Abbreviation = "+company;
              try
              {
                  db_statement.executeUpdate(sqlRecord);
                  System.out.println ("-= record updated =-");
              }catch (Exception excep) {
                  System.out.println ("Unable to update record: n" + excep);
                  System.exit(0);
               }
 

The error I am getting is:
"Unable to update record: njava.sql.SQLException: [Microsoft][ODBC Microsoft Access Driver] Too few parameters. Expected 1."


Thoughts, advice, suggestions??

As I stated earlier if i do something like:

String sqlRecord("Update Mastertable set [slope] = '-0.3234234243645' WHERE Abbreviation = 'AAPL'");
 

it works.

[dmjpro]

HI again folks. I spent my weekend coding a function to do statistical analysis on a time series and to my amazement it works without a hitch. I even verified my results were correct with excel. I am having an issue passing these values to my database table. All JDBC drivers are loaded correctly as I can "hard-code" a String and pass run executeUpdate() and it works. Of course I cannot hard-code my entire project.

//update masterTable 
              String sqlRecord ="Update MasterTable set [Slope] = "+beta1+" WHERE Abbreviation = "+company;
              try
              {
                  db_statement.executeUpdate(sqlRecord);
                  System.out.println ("-= record updated =-");
              }catch (Exception excep) {
                  System.out.println ("Unable to update record: n" + excep);
                  System.exit(0);
               }
 

The error I am getting is:
"Unable to update record: njava.sql.SQLException: [Microsoft][ODBC Microsoft Access Driver] Too few parameters. Expected 1."


Thoughts, advice, suggestions??

As I stated earlier if i do something like:

String sqlRecord("Update Mastertable set [slope] = '-0.3234234243645' WHERE Abbreviation = 'AAPL'");
 

it works.

You already solved it buddy :-)
Anyway change this.....

String sqlRecord ="Update MasterTable set [Slope] = "+beta1+" WHERE Abbreviation = "+company;
//you had this
String sqlRecord ="Update MasterTable set [Slope] = '"+beta1+"' WHERE Abbreviation = "+company;
//the change is "+beta1+" to '"+beta1+"'
 

Enjoy the code.

Debasis Jana

[dav3]

You already solved it buddy :-)
Anyway change this.....

String sqlRecord ="Update MasterTable set [Slope] = "+beta1+" WHERE Abbreviation = "+company;
//you had this
String sqlRecord ="Update MasterTable set [Slope] = '"+beta1+"' WHERE Abbreviation = "+company;
//the change is "+beta1+" to '"+beta1+"'
 

Enjoy the code.

Debasis Jana

Gives me the same error, this is driving me nuts. I have looked at it and changed it around in every logical sense I can think of and still get the same error. I have even double checked my ACcess database to make sure there is room for a number of that size, etc...

[madhoriya22]

Gives me the same error, this is driving me nuts. I have looked at it and changed it around in every logical sense I can think of and still get the same error. I have even double checked my ACcess database to make sure there is room for a number of that size, etc...

Hi,
Try to print you query ... and see what values of beta and company are replacing in your query.

[dmjpro]

You already solved it buddy :-)
Anyway change this.....

String sqlRecord ="Update MasterTable set [Slope] = "+beta1+" WHERE Abbreviation = "+company;
//you had this
String sqlRecord ="Update MasterTable set [Slope] = '"+beta1+"' WHERE Abbreviation = "+company;
//the change is "+beta1+" to '"+beta1+"'
 

Enjoy the code.

Debasis Jana

Sorry those two fields are Text.
So you need to do one more change here.

String sqlRecord ="Update MasterTable set [Slope] = '"+beta1+"' WHERE Abbreviation = '"+company+"'";
 

Now have a try with this :-)
Good Luck !

Debasis Jana

[dav3]

ah that worked, thank you kindly again:)


Now I need to figure out why it updated my first company, but not the second one. Ran through the for loop fine, said it updated but when i checked Access only 1 of the 2 companies was updated.


EDIT: seem to have figured it out, just called a closeconnection function and it worked:)

[dmjpro]

ah that worked, thank you kindly again:)


Now I need to figure out why it updated my first company, but not the second one. Ran through the for loop fine, said it updated but when i checked Access only 1 of the 2 companies was updated.


EDIT: seem to have figured it out, just called a closeconnection function and it worked:)

I already told you that you solved it but you can't do that in Java Coding.

String sqlRecord("Update Mastertable set [slope] = '-0.3234234243645' WHERE Abbreviation = 'AAPL'");
 

If your table fields are text then you need to have semi-colons.

Debasis Jana