SQL Query In Java + Oracle
0
I'm really struggling to get this SQL into my head while using java.
My problem is: I want to use a variable in my sql Query, and i cant seem to get it working, it catches the correct value(i'm showing it on a label), But it doesnt show any records, yet, if i replace the variable for a '5', it shows me the correct record...
try {
Class.forName("oracle.jdbc.driver.OracleDriver");
conn = MySqlConnect.ConnectDb();
int idaca = Integer.parseInt(idhist.getText());
String query1 = "SELECT t.nome, h.Valor_Atual, h.Valor_Antigo, a.nome
FROM Tecnologias t, Historico h, Academista a
WHERE h.Id_Academista = a.Id_Academista AND a.Id_Academista = "+idaca+" AND h.Id_Tecnologia = t.Id_Tecnologia
AND (h.Valor_Atual || h.Valor_Antigo || t.nome) LIKE '%" + ValToSearch + "%'";
Statement st = conn.createStatement();
ResultSet rs = st.executeQuery(query1);
historico history;
while (rs.next()) {
history = new historico(rs.getString("Nome"), rs.getInt("Valor_Antigo"),
rs.getInt("Valor_Atual"), rs.getString("Nome"));
historicoList.add(history);
} //END WHILE
} //END TRY
catch (Exception e) {
JOptionPane.showInputDialog(null, e);
}//END CATCH
Thats my code so far... The ValToSearch is working fine, tho...
Thank you in advance! Cheers
java mysql sql
edited Nov 22 at 12:13
MT0
51.8k52756
asked Nov 22 at 11:38
Eduardo Fernandes
34
add a comment |
0
I'm really struggling to get this SQL into my head while using java.
My problem is: I want to use a variable in my sql Query, and i cant seem to get it working, it catches the correct value(i'm showing it on a label), But it doesnt show any records, yet, if i replace the variable for a '5', it shows me the correct record...
try {
Class.forName("oracle.jdbc.driver.OracleDriver");
conn = MySqlConnect.ConnectDb();
int idaca = Integer.parseInt(idhist.getText());
String query1 = "SELECT t.nome, h.Valor_Atual, h.Valor_Antigo, a.nome
FROM Tecnologias t, Historico h, Academista a
WHERE h.Id_Academista = a.Id_Academista AND a.Id_Academista = "+idaca+" AND h.Id_Tecnologia = t.Id_Tecnologia
AND (h.Valor_Atual || h.Valor_Antigo || t.nome) LIKE '%" + ValToSearch + "%'";
Statement st = conn.createStatement();
ResultSet rs = st.executeQuery(query1);
historico history;
while (rs.next()) {
history = new historico(rs.getString("Nome"), rs.getInt("Valor_Antigo"),
rs.getInt("Valor_Atual"), rs.getString("Nome"));
historicoList.add(history);
} //END WHILE
} //END TRY
catch (Exception e) {
JOptionPane.showInputDialog(null, e);
}//END CATCH
Thats my code so far... The ValToSearch is working fine, tho...
Thank you in advance! Cheers
java mysql sql
edited Nov 22 at 12:13
MT0
51.8k52756
asked Nov 22 at 11:38
Eduardo Fernandes
34
1
The ValToSearch is working fine, tho - If your query works when you manually type'%5%', it means thatValToSearchis not working. However the issue might be elsewhere in your code, it's hard to tell with just two lines of code
– BackSlash
Nov 22 at 11:41
Im having problems with "+idaca+", if i replace it with 5, it works fine.. :/
– Eduardo Fernandes
Nov 22 at 11:42
please use some query builder eg stackoverflow.com/questions/5620985/…
– bato3
Nov 22 at 11:42
add space before this ANDidaca+"AND
– bato3
Nov 22 at 11:43
1
@EduardoFernandes Try to printquery1by addingSystem.out.println("sql query --> "+query1);
– Jåcob
Nov 22 at 11:48
add a comment |
0
0
0
I'm really struggling to get this SQL into my head while using java.
My problem is: I want to use a variable in my sql Query, and i cant seem to get it working, it catches the correct value(i'm showing it on a label), But it doesnt show any records, yet, if i replace the variable for a '5', it shows me the correct record...
try {
Class.forName("oracle.jdbc.driver.OracleDriver");
conn = MySqlConnect.ConnectDb();
int idaca = Integer.parseInt(idhist.getText());
String query1 = "SELECT t.nome, h.Valor_Atual, h.Valor_Antigo, a.nome
FROM Tecnologias t, Historico h, Academista a
WHERE h.Id_Academista = a.Id_Academista AND a.Id_Academista = "+idaca+" AND h.Id_Tecnologia = t.Id_Tecnologia
AND (h.Valor_Atual || h.Valor_Antigo || t.nome) LIKE '%" + ValToSearch + "%'";
Statement st = conn.createStatement();
ResultSet rs = st.executeQuery(query1);
historico history;
while (rs.next()) {
history = new historico(rs.getString("Nome"), rs.getInt("Valor_Antigo"),
rs.getInt("Valor_Atual"), rs.getString("Nome"));
historicoList.add(history);
} //END WHILE
} //END TRY
catch (Exception e) {
JOptionPane.showInputDialog(null, e);
}//END CATCH
Thats my code so far... The ValToSearch is working fine, tho...
Thank you in advance! Cheers
java mysql sql
edited Nov 22 at 12:13
MT0
51.8k52756
asked Nov 22 at 11:38
Eduardo Fernandes
34
I'm really struggling to get this SQL into my head while using java.
My problem is: I want to use a variable in my sql Query, and i cant seem to get it working, it catches the correct value(i'm showing it on a label), But it doesnt show any records, yet, if i replace the variable for a '5', it shows me the correct record...
try {
Class.forName("oracle.jdbc.driver.OracleDriver");
conn = MySqlConnect.ConnectDb();
int idaca = Integer.parseInt(idhist.getText());
String query1 = "SELECT t.nome, h.Valor_Atual, h.Valor_Antigo, a.nome
FROM Tecnologias t, Historico h, Academista a
WHERE h.Id_Academista = a.Id_Academista AND a.Id_Academista = "+idaca+" AND h.Id_Tecnologia = t.Id_Tecnologia
AND (h.Valor_Atual || h.Valor_Antigo || t.nome) LIKE '%" + ValToSearch + "%'";
Statement st = conn.createStatement();
ResultSet rs = st.executeQuery(query1);
historico history;
while (rs.next()) {
history = new historico(rs.getString("Nome"), rs.getInt("Valor_Antigo"),
rs.getInt("Valor_Atual"), rs.getString("Nome"));
historicoList.add(history);
} //END WHILE
} //END TRY
catch (Exception e) {
JOptionPane.showInputDialog(null, e);
}//END CATCH
Thats my code so far... The ValToSearch is working fine, tho...
Thank you in advance! Cheers
java mysql sql
java mysql sql
edited Nov 22 at 12:13
MT0
51.8k52756
asked Nov 22 at 11:38
Eduardo Fernandes
34
edited Nov 22 at 12:13
MT0
51.8k52756
asked Nov 22 at 11:38
Eduardo Fernandes
34
edited Nov 22 at 12:13
MT0
51.8k52756
edited Nov 22 at 12:13
MT0
51.8k52756
edited Nov 22 at 12:13
MT0
51.8k52756
51.8k52756
asked Nov 22 at 11:38
Eduardo Fernandes
34
asked Nov 22 at 11:38
Eduardo Fernandes
34
asked Nov 22 at 11:38
Eduardo Fernandes
34
34
1
The ValToSearch is working fine, tho - If your query works when you manually type'%5%', it means thatValToSearchis not working. However the issue might be elsewhere in your code, it's hard to tell with just two lines of code
– BackSlash
Nov 22 at 11:41
Im having problems with "+idaca+", if i replace it with 5, it works fine.. :/
– Eduardo Fernandes
Nov 22 at 11:42
please use some query builder eg stackoverflow.com/questions/5620985/…
– bato3
Nov 22 at 11:42
add space before this ANDidaca+"AND
– bato3
Nov 22 at 11:43
1
@EduardoFernandes Try to printquery1by addingSystem.out.println("sql query --> "+query1);
– Jåcob
Nov 22 at 11:48
add a comment |
1
The ValToSearch is working fine, tho - If your query works when you manually type'%5%', it means thatValToSearchis not working. However the issue might be elsewhere in your code, it's hard to tell with just two lines of code
– BackSlash
Nov 22 at 11:41
Im having problems with "+idaca+", if i replace it with 5, it works fine.. :/
– Eduardo Fernandes
Nov 22 at 11:42
please use some query builder eg stackoverflow.com/questions/5620985/…
– bato3
Nov 22 at 11:42
add space before this ANDidaca+"AND
– bato3
Nov 22 at 11:43
1
@EduardoFernandes Try to printquery1by addingSystem.out.println("sql query --> "+query1);
– Jåcob
Nov 22 at 11:48
1
1
The ValToSearch is working fine, tho - If your query works when you manually type
'%5%', it means that ValToSearch is not working. However the issue might be elsewhere in your code, it's hard to tell with just two lines of code– BackSlash
Nov 22 at 11:41
The ValToSearch is working fine, tho - If your query works when you manually type
'%5%', it means that ValToSearch is not working. However the issue might be elsewhere in your code, it's hard to tell with just two lines of code– BackSlash
Nov 22 at 11:41
Im having problems with "+idaca+", if i replace it with 5, it works fine.. :/
– Eduardo Fernandes
Nov 22 at 11:42
Im having problems with "+idaca+", if i replace it with 5, it works fine.. :/
– Eduardo Fernandes
Nov 22 at 11:42
please use some query builder eg stackoverflow.com/questions/5620985/…
– bato3
Nov 22 at 11:42
please use some query builder eg stackoverflow.com/questions/5620985/…
– bato3
Nov 22 at 11:42
add space before this AND
idaca+"AND– bato3
Nov 22 at 11:43
add space before this AND
idaca+"AND– bato3
Nov 22 at 11:43
1
1
@EduardoFernandes Try to print
query1 by adding System.out.println("sql query --> "+query1);– Jåcob
Nov 22 at 11:48
@EduardoFernandes Try to print
query1 by adding System.out.println("sql query --> "+query1);– Jåcob
Nov 22 at 11:48
add a comment |
2 Answers
2
active
oldest
votes
4
Put an space before AND h.Id_Tecnologia. That should solve your problem.
answered Nov 22 at 11:42
Rafael Palomino
332213
2
The error message you get from the database would have probably pointed at that problem. Always look at error messages. Make sure your program prints them (not justtry/catch/ignore). Make sure to include them in Stackoverflow questions.
– Thilo
Nov 22 at 11:44
There is no error message, thats the problem, it doesnt return anything
– Eduardo Fernandes
Nov 22 at 11:46
Edited answer, but still no results :/
– Eduardo Fernandes
Nov 22 at 11:49
do you use error handling like this docs.oracle.com/javase/tutorial/jdbc/basics/sqlexception.html
– bato3
Nov 22 at 11:50
I do, updated the code
– Eduardo Fernandes
Nov 22 at 12:12
|
show 1 more comment
0
You are not afraid that in ValToSearch you get something like ' OR 1 IN (DELETE * FROM Tecnologias )?
Use parametr escaping or better some query builder
answered Nov 22 at 11:48
bato3
865617
add a comment |
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
4
Put an space before AND h.Id_Tecnologia. That should solve your problem.
answered Nov 22 at 11:42
Rafael Palomino
332213
2
The error message you get from the database would have probably pointed at that problem. Always look at error messages. Make sure your program prints them (not justtry/catch/ignore). Make sure to include them in Stackoverflow questions.
– Thilo
Nov 22 at 11:44
There is no error message, thats the problem, it doesnt return anything
– Eduardo Fernandes
Nov 22 at 11:46
Edited answer, but still no results :/
– Eduardo Fernandes
Nov 22 at 11:49
do you use error handling like this docs.oracle.com/javase/tutorial/jdbc/basics/sqlexception.html
– bato3
Nov 22 at 11:50
I do, updated the code
– Eduardo Fernandes
Nov 22 at 12:12
|
show 1 more comment
4
Put an space before AND h.Id_Tecnologia. That should solve your problem.
answered Nov 22 at 11:42
Rafael Palomino
332213
2
The error message you get from the database would have probably pointed at that problem. Always look at error messages. Make sure your program prints them (not justtry/catch/ignore). Make sure to include them in Stackoverflow questions.
– Thilo
Nov 22 at 11:44
There is no error message, thats the problem, it doesnt return anything
– Eduardo Fernandes
Nov 22 at 11:46
Edited answer, but still no results :/
– Eduardo Fernandes
Nov 22 at 11:49
do you use error handling like this docs.oracle.com/javase/tutorial/jdbc/basics/sqlexception.html
– bato3
Nov 22 at 11:50
I do, updated the code
– Eduardo Fernandes
Nov 22 at 12:12
|
show 1 more comment
4
4
4
Put an space before AND h.Id_Tecnologia. That should solve your problem.
answered Nov 22 at 11:42
Rafael Palomino
332213
Put an space before AND h.Id_Tecnologia. That should solve your problem.
answered Nov 22 at 11:42
Rafael Palomino
332213
answered Nov 22 at 11:42
Rafael Palomino
332213
answered Nov 22 at 11:42
Rafael Palomino
332213
answered Nov 22 at 11:42
Rafael Palomino
332213
332213
2
The error message you get from the database would have probably pointed at that problem. Always look at error messages. Make sure your program prints them (not justtry/catch/ignore). Make sure to include them in Stackoverflow questions.
– Thilo
Nov 22 at 11:44
There is no error message, thats the problem, it doesnt return anything
– Eduardo Fernandes
Nov 22 at 11:46
Edited answer, but still no results :/
– Eduardo Fernandes
Nov 22 at 11:49
do you use error handling like this docs.oracle.com/javase/tutorial/jdbc/basics/sqlexception.html
– bato3
Nov 22 at 11:50
I do, updated the code
– Eduardo Fernandes
Nov 22 at 12:12
|
show 1 more comment
2
The error message you get from the database would have probably pointed at that problem. Always look at error messages. Make sure your program prints them (not justtry/catch/ignore). Make sure to include them in Stackoverflow questions.
– Thilo
Nov 22 at 11:44
There is no error message, thats the problem, it doesnt return anything
– Eduardo Fernandes
Nov 22 at 11:46
Edited answer, but still no results :/
– Eduardo Fernandes
Nov 22 at 11:49
do you use error handling like this docs.oracle.com/javase/tutorial/jdbc/basics/sqlexception.html
– bato3
Nov 22 at 11:50
I do, updated the code
– Eduardo Fernandes
Nov 22 at 12:12
2
2
The error message you get from the database would have probably pointed at that problem. Always look at error messages. Make sure your program prints them (not just
try/catch/ignore). Make sure to include them in Stackoverflow questions.– Thilo
Nov 22 at 11:44
The error message you get from the database would have probably pointed at that problem. Always look at error messages. Make sure your program prints them (not just
try/catch/ignore). Make sure to include them in Stackoverflow questions.– Thilo
Nov 22 at 11:44
There is no error message, thats the problem, it doesnt return anything
– Eduardo Fernandes
Nov 22 at 11:46
There is no error message, thats the problem, it doesnt return anything
– Eduardo Fernandes
Nov 22 at 11:46
Edited answer, but still no results :/
– Eduardo Fernandes
Nov 22 at 11:49
Edited answer, but still no results :/
– Eduardo Fernandes
Nov 22 at 11:49
do you use error handling like this docs.oracle.com/javase/tutorial/jdbc/basics/sqlexception.html
– bato3
Nov 22 at 11:50
do you use error handling like this docs.oracle.com/javase/tutorial/jdbc/basics/sqlexception.html
– bato3
Nov 22 at 11:50
I do, updated the code
– Eduardo Fernandes
Nov 22 at 12:12
I do, updated the code
– Eduardo Fernandes
Nov 22 at 12:12
|
show 1 more comment
0
You are not afraid that in ValToSearch you get something like ' OR 1 IN (DELETE * FROM Tecnologias )?
Use parametr escaping or better some query builder
answered Nov 22 at 11:48
bato3
865617
add a comment |
0
You are not afraid that in ValToSearch you get something like ' OR 1 IN (DELETE * FROM Tecnologias )?
Use parametr escaping or better some query builder
answered Nov 22 at 11:48
bato3
865617
add a comment |
0
0
0
You are not afraid that in ValToSearch you get something like ' OR 1 IN (DELETE * FROM Tecnologias )?
Use parametr escaping or better some query builder
answered Nov 22 at 11:48
bato3
865617
You are not afraid that in ValToSearch you get something like ' OR 1 IN (DELETE * FROM Tecnologias )?
Use parametr escaping or better some query builder
answered Nov 22 at 11:48
bato3
865617
answered Nov 22 at 11:48
bato3
865617
answered Nov 22 at 11:48
bato3
865617
answered Nov 22 at 11:48
bato3
865617
865617
add a comment |
add a comment |
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1
The ValToSearch is working fine, tho - If your query works when you manually type
'%5%', it means thatValToSearchis not working. However the issue might be elsewhere in your code, it's hard to tell with just two lines of code– BackSlash
Nov 22 at 11:41
Im having problems with "+idaca+", if i replace it with 5, it works fine.. :/
– Eduardo Fernandes
Nov 22 at 11:42
please use some query builder eg stackoverflow.com/questions/5620985/…
– bato3
Nov 22 at 11:42
add space before this AND
idaca+"AND– bato3
Nov 22 at 11:43
1
@EduardoFernandes Try to print
query1by addingSystem.out.println("sql query --> "+query1);– Jåcob
Nov 22 at 11:48