PreparedStatement 3 « JDBC « Java Database Q&A





1. Strange problem of setBinaryStream and executeUpdate in PreparedStatement    dbforums.com

Following is the part of my code which inserts blob data into the database. /////// code snippet ////////// String str1 = "test1"; String str2 = "test2"; //"1.gz" is a compressed Chinese Web page less than 64k. File f = new File("./1.gz"); FileInputStream fis = new FileInputStream(f); String insert_sql = "INSERT INTO Test (col1,col2,col3) VALUES(?,?,?)"; PreparedStatement ps = conn.prepareStatement(insert_sql); ps.setString(1,str1); ps.setString(2,str2); ps.setBinaryStream(3,fis,(int)(f.length())); ...

2. LIKE and PreparedStatement    dbforums.com

Hello, I am trying to search for a name, so that the user only need to input part of the name and it will come up. firstname LIKE '%?%'; ps.setString(1, firstname); The statement sees the '?' as part of the String to be search, so is there any commands to say that the '?' is used for a preparedstatement and not ...

3. performans question : should i use prepared statement or not?    dbforums.com

hello, our web server and db2 server are on different servers (win2k). in my web application (jsp) i have to do insertions into a db2 table. now, i could use: st.executeUpdate("insert into mytable (columnA, columnB, columC) values (45, 3, 'dummyString1'), (45, 3, 'dummyString2'), (35, 2, 'dummyString3'), .... , (51, 6, 'dummyString98'), (51, 7, 'dummyString99), (51, 7, 'dummyString100')"); using this method, i ...

4. need urgent help with PreparedStatement    dbforums.com

i use db2 as database, jdbc 2.0 driver and jsp. i have a prepared statement which looks like this : query = "select id, name from t_department where id in (?) order by name"; i have a StringBuffer (selectedIDs) which consists of comma sepperated integers like : 216, 220, 230, 323, 432 it is not a string so the statement below ...

5. PreparedStatement not working from EJB    dbforums.com

I need to communicate with database from a stateless session EJB. We are using simple JDBC (just like from any normal class) and not the EJBServer connection pools. Table A has a primary key and table B references it for a foreign key. Now, I am inserting a record in table A and in the same method, inserting a corresponding record ...

6. Help me. PreparedStatement    java-forums.org

//this is manualy typed in so i'm sure i'm missing a ton of 's and ,s //another reason i'm not a fan of donig it this way StringBuffer sql = "insert into tableA (id, name) values ( '"; sql.append("mySequence.nextval"); sql.append(' " , " '); sql.append(someMethod.getDataFromXml("name")); sql.append("' )"); //set up connection stuff newStatement.executeUpdate(sql.toString());

7. JDBC Prepared Statement    java-forums.org

Java Code: import java.sql.*; import java.io.*; import java.sql.PreparedStatement; import java.io.File; import java.io.FileReader; import java.io.BufferedReader; class shipment_prac3_readtxtfile { public static void main (String args []) throws SQLException, IOException { // the following statement loads the Oracle jdbc driver try { Class.forName ("oracle.jdbc.driver.OracleDriver"); } catch (ClassNotFoundException e) { System.out.println ("Could not load the driver"); } String user, pass, host,servicename; user = readEntry("userid : ...

8. PreparedStatement and Arrays    java-forums.org

9. problem with PreparedStatement    java-forums.org





10. Jdbc Prepared Statement execute()    java-forums.org

package com.nitish.jdbc.preparedstatement; import java.sql.*; import java.io.*; public class Jdbc13{ public static void main(String []s)throws Exception{ System.setProperty("jdbc.drivers","oracle.jdbc.driver.OracleDriver"); Connection con = DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:xe","system","nitish"); String query = " "; PreparedStatement ps = con.prepareStatement(query); BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); while(!query.equals("exit")){ try{ query = br.readLine(); Boolean b = ps.execute(); if(b){ ResultSet rs = ps.getResultSet(); while(rs.next()){ System.out.println(rs.getInt(1)+"\t"+rs.getString(2)+"\t"+rs.getDouble(3)); }//while }//if else{ System.out.println("Enter Student ID :: "); int stid=Integer.parseInt(br.readLine()); ...

11. preparedStatement    java-forums.org

Hello, I am trying to insert data into a db using preparedStatement, because I need to insert a .class file as well. The thing is, connect.prepareStatement doesn't really work. It doesn't insert anything. Before preparedStatement, the following insertion worked fine: int up = statement.executeUpdate("INSERT INTO javaFiles (className, classScope, package, superclassName) " + "VALUES ('" + name + "', '" + scope ...

12. Prblem in Prepared Statement    java-forums.org

I write a program for reading program from database using prepared statement. the sql session is /* start */ sql="select max(line_no) as max from expr_rcp where expr_no= ? "; pst=conn.prepareStatement(sql); pst.setString(1,exprNo); rst=pst.executeQuery(); if(rst.next()) { lineNo=rst.getInt("max"); System.out.println("lineNo:::"+lineNo); } /* end */ i enter exprNo ='855027500001' but this snippet nothing returns. After that i try the following code /* start */ sql="select max(line_no) ...

13. Regarding PreparedStatement    java-forums.org

Hi, I know that to get the row count from sql we should give as follows select count(*) from tablename where columnName = value; is this wright Now my problem is, actually i am adding students data in the table from text fields. But what i need is the maximum row count for each roll number should be 3. There should ...

14. More than 1 preparedStatement object    java-forums.org

Hi, Iam not getting you. 1.For a single PreparedStatement object u can pass single query using that you can insert/update multiple values as a batch(i.e) single transaction.For each and every value passing you have to call "addbatch().Finally you have to call executeBatch().So,entire batch will be executed in a single transaction. One PreparedStatement object contains only one query. 2.Again if you want ...

15. PreparedStatements    java-forums.org

:confused: i've been trying to get a database query to work, but so far it seems like i'm doing wrong than right. i'm suppose to use prepared statement to query it, have an option to enter userID and then have a print out of all the stocks associated with that user. with what have now i can enter the userID but ...

16. Problem with PreparedStatement?    java-forums.org

Trying to use PreparedStatement but it dont work. I have looked through a lot of different tutorials for this but do not find the answer to my problem. If anyone can see what I do wrong, please feel free to write the answer. I enclose the codes. This is the Servlet: public class HittaArtNr extends HttpServlet { public static String paramValue; ...





17. PreparedStatements and escaped text    java-forums.org

18. prepared statement problem    forums.oracle.com

19. PreparedStatement assistance    forums.oracle.com

20. Prepared statement not Working    forums.oracle.com

21. please help me solve PreparedStatement problem    forums.oracle.com

Please do not cross post. Stick with the thread in the JDBC forum. Also, when you read the resultset, you read it once, all the way through, assigning the values to variables, then read it again to insert it into the JTextArea. I don't believe you can read the same field twice when using the JDBC-ODBC Bridge (at least not when ...

22. PreparedStatement with today (now) problem?    forums.oracle.com

It's over 5 years since I've used interbase, but in standard SQL if you write 'now' it really means the string now. Don't you have to remove the single quotes around now to be able to call it as a function? And it's early in the morning here so I read over some similar reply... Message was edited by: Peetzore

23. PreparedStatement interface    forums.oracle.com

PreparedStatement objects are compiled and prepared only once by jdbc. - The future invocation of the PreparedStatement object does not recompile the SQL statements. What does this statement mean ? Does it mean that incase of Statement objects the query gets compiled each time even if there is no change in the query ? Am just trying to understand the difference ...

24. Prepared Statement    forums.oracle.com

25. Help with Like Prepared statement    forums.oracle.com

Your code leaks Connections! You create a Connection and never close it, that's a pretty bad idea. What database are you using? From a quick glance the code seems correct (apart from the problem I mentioned above, of course). Edit: also, I see that you're using the JDBC-ODBC bridge. That JDBC driver has only very limited functionality and also has a ...

26. PreparedStatement not working    forums.oracle.com

Was trying to see if anybody can guide me in the right direction. My code seems to be running but I'm not able to achieve what I would like, I'm trying to create a simple login to my system. For some reason when I try to login with a username and password that I know IS in my database I still ...

28. Prepared Statement    forums.oracle.com

29. Help for prepared statement    forums.oracle.com

Hi, Infact i want to implement it through prepared statement. Normally we use pstmt.setDate() I just want to know a method in which i can set value in pstmt.setDate and second from query you can see it first add 30 in current date, i want to know how we manage this type of thing in preparedstatement. Regards

30. Prepared Statement Problems    forums.oracle.com

You're a genius! haha, ok thanks a bunch I can't believe I missed that. As for the select * aside I do remember something about that from database programming, but I'm trying to get this program done and will probably go back and fix it later. Thanks again! It would have taken me forever to find that.

31. Help with PreparedStatement    forums.oracle.com

If entering the hardcoded String with unicode characters works and entering another String doesn't work then the content of the other String is not correct. Where did you get it from? You've probably got an encoding problem in some other place. Also: new String("someConstant") is superfluous and slightly wasteful, just replace it with "someConstant".

32. PreparedStatement doubt    forums.oracle.com

I told you before but you don't seem to believe me: You don't have problem with PreparedStatement. This is illustrated by the fact that if you store a String constant from your source code then it works. You've got an error somewhere earlier in your code. The String you store does not contain the data you want/think it does. Also: When ...

33. Unsupported Exception from PreparedStatement    forums.oracle.com

The Database is SQL Server. It seems to me that this isn't a driver problem. Any way, it's not an ODBC driver problem. It's a JDBC driver problem. It's the implementation of the JdbcOdbc bridge. The annoying bit is that the ODBC documentation claims (I haven't tried it directly) to have functions SQLNumParams and SQLDescribeParam which do just what's needed for ...

34. PreparedStatement executeBatch    forums.oracle.com

Hi Guys! I'll be executing multiple sql statement and I'm using executeBatch of PreparedStatement. But I'm having some problem when I get errors during the execution (e.g. UNIQUE CONSTRAINT). The process stops on that point. What I want to happen is to continue the process even I encountered errors. Please help me! Thanks!

35. Merge Prepared Statement    forums.oracle.com

java_swing_dude wrote: Can't we pass the parameters in using a preparedStatement? Sure, but two separate prepared statements are needed. A single statement can not conditionally perform an insert or update. The condition must be in the Java code. Two approaches: 1. Attempt an insert, and if it throws an exception due to a key violation, try the update. You must have ...

36. Prepared Statement    forums.oracle.com

hai to all, iam core java software trainee 1. I insert values in database by using Prepared Statement and how can i set result set to reterive the data on the application. 2. In application i had taken some ComboBox items and text fields iam getting text field items from database. 3. But iam not getting ComboBox items plz give me ...

37. Doubt on Prepared statement    forums.oracle.com

Hi, If i have a collection of string, and i want to use the strings in that collection for my IN parameters ( inside the query ), then which is the preferred method to follow among the below mentioned two ways.. 1) I am iterating the collection and calling prepStmt.setString(), each time for the IN parameters 2) I am iterating the ...

38. PreparedStatement from ArrayList    forums.oracle.com

1. Use PreparedStatement with SQL strings like "DELETE FROM employees WHERE name = ?", or 2. Use Statement with SQL strings like "DELETE FROM employees WHERE name = 'Ashley'" Your choice. If you ask yourself WWBDLHD?, you know the answer is #1. You could have SQL strings without ?'s and still treat them as trivial prepared statements, if it comes to ...

39. On Prepared Statement    forums.oracle.com

Hi, I just want to get the list of values that are set in my preparedstatement..Following is the code snippet String strQuery = "INSERT INTO MYTABLE(ID,DISPLAYNAME) VALUES (?,?)"; PreparedStatement pstmt = conn.prepareStatement(strQuery); int index =1; pstmt.setString(index++,alertId); pstmt.setString(index++,alertContext.getScenarioDisplayName()); pstmt.executeQuery(); Here i want to print the values that are set by the setstring statemetns.There are hundreds of values set in the pstmt , ...

40. setTimestampand PreparedStatement using NUMTODSINTERVAL    forums.oracle.com

Why is it that this PreparedStatement doesn't seem retrieve the correct record for me when I use it in Java through JDBC thin client ? It works when I try it directly in TOAD. Java version: This code does not produce any errors! It just doesn't seem to return what it should. sql = "select 1 "+ " from TMP_MYTABLE "+ ...

42. Rowset and PreparedStatement    forums.oracle.com