Sql statement syntax

How can I use sql statement select a record by a date field?

Like talden suggested, you should use PreparedStatements. They are much clearer and they are portable across different JDBC drivers and databases. Just create the date you to use by some means (like get it from the Calendar class). Then use setDate() or setTimestamp() method from PreparedStatement.
String query = "select * from mytable where mydatecol = ?";
PreparedStatements ps = connection.prepareStatement(query);
Date myDate = new Date();
ps.setTimestamp(1, myDate);
setDate only gives you the date (by day), setTimestamp also includes smaller units up to nanoseconds or something depending on what your platform suppors.

Similar Messages

IF statement syntax in SQL script view

I need to include a "IF" condition in the "SELECT" section of my SQL script view.
I tried the following syntax's but I get the error 'Incorrect SQL syntax near 'IF'
1. IF(Revenue <> '0' AND Quantity <> '0', Revenue/Quantity, '0') AS Gross Price
2. IF(Revenue != '0' AND Quantity != '0', Revenue/Quantity, '0') AS Gross Price
3. IF(Revenue <> '0' AND Quantity <> '0' THEN Revenue/Quantity ELSE '0' END) AS Gross Price
4. IF(Revenue != '0' AND Quantity != '0' THEN Revenue/Quantity ELSE '0' END) AS Gross Price
My final SQL would read like follows:
SELECT field1, field2, IF(......) AS field3
FROM table1
Can anybody please help with the correct IF statement syntax to be used in the SQL script based view?

Hi Lakshmi,
below is the syntax for IF statement.
IF <bool_expr1> THEN
<then_stmts1>
ELSEIF <bool_expr2>
THEN <then_stmts2>
[ELSE <else_stmts3>]
END IF
eg :
BEGIN
DECLARE found INT := 1;
SELECT count(*) INTO found FROM books WHERE isbn = :v_isbn;
IF :found = 0 THEN
INSERT INTO books VALUES (:v_isbn, 'In-Memory Data Management', 1, 1, '2011', 42.75, 'EUR');
ELSE
UPDATE books SET price = 42.75 WHERE isbn =:v_isbn;
END IF;
END;
Sreehari

Help! Syntax Error in SQL statement

Hello. I'm getting an error message and I'm just not seeing
where I went wrong. The SQL statement is:
updateSQL = "UPDATE TrainingHistory SET Status='" &
fFormat(Request.Form(cStatus)) & "', StatusComments='" &
fFormat(Request.Form(cStatusComments)) & " WHERE Training_ID="
& fFormat(Request.Form(cTrainingID))
The error message is:
[Microsoft][ODBC Microsoft Access Driver] Syntax error in
string in query expression '' WHERE Training_ID=9054'.
I've been looking at it for a while. Not sure where I went
wrong. Here is a more complete version of the code:
<%
Function fFormat(vText)
fFormat = Replace(vText, "'", "''")
End Function
Sub sRunSQL(vSQL)
set cExecute = Server.CreateObject("ADODB.Command")
With cExecute
.ActiveConnection = MM_coldsuncrea_lms_STRING
.CommandText = vSQL
.CommandType = 1
.CommandTimeout = 0
.Prepared = true
.Execute()
End With
End Sub
If Request.Form("action")="update" Then
'Set variables for update
Dim updateSQL, i
Dim cTrainingID, cStatus, cStatusComments
'Loop through records on screen and update
For i = 1 To fFormat(Request.Form("counter"))
'Create the proper field names to reference on the form
cTrainingID = "Training_ID" & CStr(i)
cStatus = "Status" & CStr(i)
cStatusComments = "StatusComments" & CStr(i)
'Create the update sql statement
updateSQL = "UPDATE TrainingHistory SET Status='" &
fFormat(Request.Form(cStatus)) & "', StatusComments='" &
fFormat(Request.Form(cStatusComments)) & " WHERE Training_ID="
& fFormat(Request.Form(cTrainingID))
'Run the sql statement
Call sRunSQL(updateSQL)
Next
'Refresh page
Response.Redirect("ClassUpdateRoster.asp?Training_ID=") &
(rsClassDetails.Fields.Item("event_ID").Value)
End If
%>

You need another single quote after the double quote before
the WHERE clause. You are not closing the single quote you used to
delimit the value for StatusComments.

Improving SQL Insert statement syntax

It's about insert statement syntax, in insert statement, unlike in update statement column names and corresponding values are separated in two different sets. With this separation debugging/writing of insert statement is going to be time taking activity. To identify what value is getting stored in any column, first column position needs to be identified and after that by counting commas in the values list value is located. If functions are included in insert statement then counting of commas doesn't help to locate the value.
In any non trivial application column count in insert statement is going to be very big number and it is unmanageable.
If column name and value are written next to each other as it is done in cause of UPDATE statement, it is going to drastically reduce the debugging efforts and there by improves the productivity of the developers.
So I request SQL community please consider having a variant of insert statement in similar lines of update statement. This will simplify the life of millions of developers.
Edited by: user9110509 on Feb 6, 2010 10:19 AM

Hi,
That's a good idea! An optional alternate way of specifying the columns would be handy.
Perhaps the reason it hasn't been done yet is that most people, like those who have responded to this message, do not find the current syntax much of a problem. We can't be sure if your idea "is going to drastically reduce the debugging efforts" until it is available, but my guess is that it isn't.
One thing I do to make sure the two lists match is to indent the values directly below the column names, like this:
INSERT INTO emp (empno, ename,   hiredate,                job)
      VALUES (9876, 'OBAMA', TO_DATE ( '20-JAN-2009'
                          , 'DD-MON-YYYY), 'PRESIDENT');If the list is very long, or individual values are very complicated, then I might start with a list of the column names
INSERT INTO emp          -- Step 1: not ready to run yet
(     empno
,     ename
,     hiredate
,     job
VALUESthen use the editor's copy and paste commands to duplicate that list:
INSERT INTO emp          -- Step 2: not ready to run yet
(     empno
,     ename
,     hiredate
,     job
VALUES
(     empno
,     ename
,     hiredate
,     job
;and then fill in the VALUES section, leaving the copied names as comments:
INSERT INTO emp          -- Step 3: ready to run
(     empno
,     ename
,     hiredate
,     job
VALUES
(     9876               -- empno
,     'OBAMA'               -- ename
,     TO_DATE ( '20-JAN-2009'
          , 'DD-MON-YYYY
          )          -- hiredate
,     'PRESIDENT'          -- job
;

Can we use if/else in sql statement?

Hi,
Is it possible to write a sql statement like the one below (not plsql)?
if (select 'True' from dual) = 'True' -- 1
then
select 'True' from dual; -- 2
else
select 'False' from dual; -- 3
endBasically, I want to execute either sql 2 or 3 based on the result of sql 1. I'm not sure if this is possible using only sql and not having to write a stored proc.
What are the different ways I can implement this?
Thanks for the help.

Billy Verreynne wrote:
The case syntax is a bit funny though as there's not a single condition evaluation (like a DECODE or case structs from some other languages).
This is what I would expect a typical case struct to look like - evaluating a single condition:
case <condition>
when <value-1> then return <result-1>
when <value-n> then return <result-n>
else
return <return-z>
end
?:| You mean like this...?
SQL> ed
Wrote file afiedt.buf
1 select empno, ename, deptno
2        ,case deptno
3           when 10 then 'This is Department 10'
4           when 20 then 'And department 20'
5           when 30 then 'And of course department 30'
6         else
7           'Blimey it is something else!'
8         end as dept_desc
9* from emp
SQL> /
     EMPNO ENAME          DEPTNO DEPT_DESC
      7369 SMITH              20 And department 20
      7499 ALLEN              30 And of course department 30
      7521 WARD               30 And of course department 30
      7566 JONES              20 And department 20
      7654 MARTIN             30 And of course department 30
      7698 BLAKE              30 And of course department 30
      7782 CLARK              10 This is Department 10
      7788 SCOTT              20 And department 20
      7839 KING               10 This is Department 10
      7844 TURNER             30 And of course department 30
      7876 ADAMS              20 And department 20
      7900 JAMES              30 And of course department 30
      7902 FORD               20 And department 20
      7934 MILLER             10 This is Department 10
14 rows selected.

Can someone help me correct this sql statement in a jsp page?

ive been getting the java.sql.SQLException: Incorrect syntax error for one of my sql nested statements. i cant seem to find similar egs online, so reckon if anyone here could help, really appreciate it.
as im putting the nested sql in jsp page, it has to be with lots of " " n crap. very confusing if there are nested.
heres the sql statement without those "" that i want to use:
select top 5 * from(
select top+"'"+offset+"'"+" * from prod where cat=" +"'" cat "'"+"
)order by prodID desc
when i put this in my jsp pg, i had to add "" to become:
String sql = "select top 5 * from("+"select top"+"'"+offset+"'"+" * from prod where cat=" +"'" +cat+ "'"+")order by prodID desc";cat=" +"'" cat "'"+")order by prodID desc";
all those "" are confusing me to no end, so i cant figure out what should be the correct syntax. the error says the syntax error is near the offset.

If offset is, say, 10, and cat is, say, "new", then it looks like you're going to produce the SQL:
select top 5 * from(
select top '10' * from prod where cat='new'
)order by prodID descThat looks exactly like incorrect syntax to me... top almost certainly can't handle a string literal as its operand... you almost certainly would want "top 10" instead of "top '10'"...
If you use PreparedStatement, you don't have to remember what you quote and what you don't and you can have your SQL in a single static final string to boot...

Capture all SQL statements and archive to file in real time

Want to Capture all SQL statements and archive to file in real time?
Oracle Session Manager is the tool just you need.
Get it at http://www.wangz.net
This tools monitor how connected sessions use database instance resources in real time. You can obtain an overview of session activity sorted by a statistic of your choosing. For any given session, you can then drill down for more detail. You can further customize the information you display by specifying manual or automatic data refresh, the rate of automatic refresh.
In addition to these useful monitoring capabilities, OSM allows you to send LAN pop-up message to users of Oracle sessions.
Features:
--Capture all SQL statement text and archive to files in real time
--Pinpoints problematic database sessions and displays detailed performance and resource consumption data.
--Dynamically list sessions holding locks and other sessions who are waiting for.
--Support to kill several selected sessions
--Send LAN pop-up message to users of Oracle sessions
--Gives hit/miss ratio for library cache,dictionary cache and buffer cache periodically,helps to tune memory
--Export necessary data into file
--Modify the dynamic system parameters on the fly
--Syntax highlight for SQL statements
--An overview of your current connected instance informaiton,such as Version, SGA,License,etc
--Find out object according to File Id and Block Id
Gudu Software
http://www.wangz.net

AnkitV wrote:
Hi All
I have 3 statements and I am writing some thing to a file using UTL_FILE.PUT_LINE after each statement is over. Each statement takes mentioned time to complete.
I am opening file in append mode.
statement1 (takes 2 mins)
UTL_FILE.PUT_LINE
statement2 (takes 5 mins)
UTL_FILE.PUT_LINE
statement3 (takes 10 mins)
UTL_FILE.PUT_LINE
I noticed that I am able to see contents written by UTL_FILE.PUT_LINE only after statement3 is over, not IMMEDIATELY after statement1 and statement2 are done ?
Can anybody tell me if this is correct behavior or am I missing something here ?Calling procedure must terminate before data is actually written to the file.
It is expected & correct behavior.

How to use presentaion variable in the SQL statement

Is there any special syntax to use a presentation variable in the SQL Statement?
I am setting a presentation variable (Fscl_Qtr_Var)in the dashboard prompt.
If i set the filter as ADD->VARIABLE->PRESENTATION, it shows the statement as 'Contract Request Fiscal Quarter is equal to / is in @{Fscl_Qtr_Var} '.
And this works fine but when i convert this to SQL, it returns
"Contract Request Date"."Contract Request Fiscal Quarter" = 'Fscl_Qtr_Var'
And this does not work.It is not being set to the value in the prompt.
I need to combine this condition with other conditions in the SQL Statement. Any help is appreciated. Thanks

Try this: '@{Fscl_Qtr_Var}'

What's wrong with my SQL statement?

Guys,
Please help me with this one.
I am using Oracle JDBC Driver 9.2.0. When I did "select column1, column2 from tableName where rownum<1000", it was really fast. But when I do "select column1, column2 from tableName where rownum between 100 and 200", it won't return. The whole program just sit there, like there is some kind of infinite loop going on or something. I don't know Oracle database at all. Is there anything wrong with my SQL statements or there is some special Oracle SQL statement requirement/syntax?
Thanks.

Guys,
Please help me with this one.
I am using Oracle JDBC Driver 9.2.0. When I did
"select column1, column2 from tableName where
rownum<1000", it was really fast. But when I do
"select column1, column2 from tableName where rownum
between 100 and 200", it won't return. The whole
program just sit there, like there is some kind of
infinite loop going on or something. I don't know
Oracle database at all. Is there anything wrong with
my SQL statements or there is some special Oracle SQL
statement requirement/syntax?
Thanks.
why don't you just try a standard WHERE
"select column1, column2 from tableName where rownum > 100 and rownum < 200"

Using a number variable in an SQL statement

Hi,
I am trying to use a variable in an sql statement and I have run into problems when the variable is a number. The following line of code works if the variable is a string but not if it is a number.
"SELECT TOP 1 UUT_STATUS FROM UNIT_UUT_RESULT WHERE UnitID = '" + Locals.LocalUnitID + "' ORDER BY START_DATE_TIME DESC"
Is there a difference in the use of the single and double quotes and the + sign for number variables?
Thanks
Stuart
Solved!
Go to Solution.

Hi Stuart,
I am assuming that the UnitID is stored as a numeric in the database? If so, the proper SQL syntax for comparing with numerics should not use a single quote (or any quotes for that matter). The quotes are used only for strings.
So you would want to use:
"SELECT TOP 1 UUT_STATUS FROM UNIT_UUT_RESULT WHERE UnitID = " + Locals.LocalUnitID + " ORDER BY START_DATE_TIME DESC"
This is really more of an SQL question universal to all languages, not just TestStand.
Here is an excellent resource that you can consult:
http://www.w3schools.com/sql/sql_where.asp
Jervin Justin
NI TestStand Product Manager

Using arrays in sql statement

Hello,
I would like to use integer array( say..int count[] = new int[3];) on my sql statement to retrieve some values. Is there a way to use int array variable in sql statement?. If yes, how should I approach doing that?.
Thank You in Advance.
Regards,
Pinal.

I'm going to be honest, I'm not so sure there is such a thing in standard SQL syntax so it would depend upon the database you were using as to whether this option was available as part of the SQL language.
My suggestion would be to cheat, naughty I know:String arrayString = "";
for (int i = 0; i < arrayInt.size(); i++) {
arrayString += "**" + arrayInt;
arrayString = arrayString.substring(2, arrayString.length());Then just parse arrayString in to an SQL VARCHAR or TEXT field.
Obviously when you return it just use StringTokenizer to split the string up using your deliminator (in this case **) and then convert the values back into an int array.
I'm not sure how efficient that code would be but it should do the job.

SQL Statements in ABAP and meaning

Hello Friends,
Please, can anybody provide me a documentation on the different ABAP SQL statements and there usage/meanings.
Thanks,
Shreekant

hi,
goto abapdocu->abap Database access->open Sql you will get examples.
for documnetation got se38->specify the command and press F1.
SELECT:
Put the curson on that word and press F1 . You can see the whole documentation for select statements.
SELECT result
FROM source
INTO|APPENDING target
[[FOR ALL ENTRIES IN itab] WHERE sql_cond]
Effect
SELECT is an Open-SQL-statement for reading data from one or several database tables into data objects.
The select statement reads a result set (whose structure is determined in result ) from the database tables specified in source, and assigns the data from the result set to the data objects specified in target. You can restrict the result set using the WHERE addition. The addition GROUP BY compresses several database rows into a single row of the result set. The addition HAVING restricts the compressed rows. The addition ORDER BY sorts the result set.
The data objects specified in target must match the result set result. This means that the result set is either assigned to the data objects in one step, or by row, or by packets of rows. In the second and third case, the SELECT statement opens a loop, which which must be closed using ENDSELECT. For every loop pass, the SELECT-statement assigns a row or a packet of rows to the data objects specified in target. If the last row was assigned or if the result set is empty, then SELECT branches to ENDSELECT . A database cursor is opened implicitly to process a SELECT-loop, and is closed again when the loop is ended. You can end the loop using the statements from section leave loops.
Up to the INTO resp. APPENDING addition, the entries in the SELECTstatement define which data should be read by the database in which form. This requirement is translated in the database interface for the database system´s programming interface and is then passed to the database system. The data are read in packets by the database and are transported to the application server by the database server. On the application server, the data are transferred to the ABAP program´s data objects in accordance with the data specified in the INTO and APPENDING additions.
System Fields
The SELECT statement sets the values of the system fields sy-subrc and sy-dbcnt.
sy-subrc Relevance
0 The SELECT statement sets sy-subrc to 0 for every pass by value to an ABAP data object. The ENDSELECT statement sets sy-subrc to 0 if at least one row was transferred in the SELECT loop.
4 The SELECT statement sets sy-subrc to 4 if the result set is empty, that is, if no data was found in the database.
8 The SELECT statement sets sy-subrc to 8 if the FOR UPDATE addition is used in result, without the primary key being specified fully after WHERE.
After every value that is transferred to an ABAP data object, the SELECT statement sets sy-dbcnt to the number of rows that were transferred. If the result set is empty, sy-dbcnt is set to 0.
Notes
Outside classes, you do not need to specify the target area with INTO or APPENDING if a single database table or a single view is specified statically after FROM, and a table work area dbtab was declared with the TABLES statement for the corresponding database table or view. In this case, the system supplements the SELECT-statement implicitly with the addition INTO dbtab.
Although the WHERE-condition is optional, you should always specify it for performance reasons, and the result set should not be restricted on the application server.
SELECT-loops can be nested. For performance reasons, you should check whether a join or a sub-query would be more effective.
Within a SELECT-loop you cannot execute any statements that lead to a database commit and consequently cause the corresponding database cursor to close.
SELECT - result
Syntax
... lines columns ... .
Effect The data in result defines whether the resulting set consists of multiple rows (table-like structure) or a single row ( flat structure). It specifies the columns to be read and defines their names in the resulting set. Note that column names from the database table can be changed. For single columns, aggregate expressions can be used to specify aggregates. Identical rows in the resulting set can be excluded, and individual rows can be protected from parallel changes by another program.
The data in result consists of data for the rows lines and for the columns columns.
SELECT - lines
Syntax
... { SINGLE }
| { { } } ... .
Alternatives:
1. ... SINGLE
2. ... { }
Effect
The data in lines specifies that the resulting set has either multiple lines or a single line.
Alternative 1
... SINGLE
Effect
If SINGLE is specified, the resulting set has a single line. If the remaining additions to the SELECT command select more than one line from the database, the first line that is found is entered into the resulting set. The data objects specified after INTO may not be internal tables, and the APPENDING addition may not be used.
An exclusive lock can be set for this line using the FOR UPDATE addition when a single line is being read with SINGLE. The SELECT command is used in this case only if all primary key fields in logical expressions linked by AND are checked to make sure they are the same in the WHERE condition. Otherwise, the resulting set is empty and sy-subrc is set to 8. If the lock causes a deadlock, an exception occurs. If the FOR UPDATE addition is used, the SELECT command circumvents SAP buffering.
Note
When SINGLE is being specified, the lines to be read should be clearly specified in the WHERE condition, for the sake of efficiency. When the data is read from a database table, the system does this by specifying comparison values for the primary key.
Alternative 2
Effect
If SINGLE is not specified and if columns does not contain only aggregate expressions, the resulting set has multiple lines. All database lines that are selected by the remaining additions of the SELECT command are included in the resulting list. If the ORDER BY addition is not used, the order of the lines in the resulting list is not defined and, if the same SELECT command is executed multiple times, the order may be different each time. A data object specified after INTO can be an internal table and the APPENDING addition can be used. If no internal table is specified after INTO or APPENDING, the SELECT command triggers a loop that has to be closed using ENDSELECT.
If multiple lines are read without SINGLE, the DISTINCT addition can be used to exclude duplicate lines from the resulting list. If DISTINCT is used, the SELECT command circumvents SAP buffering. DISTINCT cannot be used in the following situations:
If a column specified in columns has the type STRING, RAWSTRING, LCHAR or LRAW
If the system tries to access pool or cluster tables and single columns are specified in columns.
Note
When specifying DISTINCT, note that you have to carry out sort operations in the database system for this.
SELECT - columns
Syntax
| { {col1|aggregate( col1 )}
{col2|aggregate( col2 )} ... }
| (column_syntax) ... .
Alternatives:
1. ... *
2. ... {col1|aggregate( col1 )}
{col2|aggregate( col2 )} ...
3. ... (column_syntax)
Effect
The input in columns determines which columns are used to build the resulting set.
Alternative 1
Effect
If * is specified, the resulting set is built based on all columns in the database tables or views specified after FROM, in the order given there. The columns in the resulting set take on the name and data type from the database tables or views. Only one data object can be specified after INTO.
Note
If multiple database tables are specified after FROM, you cannot prevent multiple columns from getting the same name when you specify *.
Alternative 2
... {col1|aggregate( col1 )}
{col2|aggregate( col2 )} ...
Effect
A list of column labels col1 col2 ... is specified in order to build the resulting list from individual columns. An individual column can be specified directly or as an argument of an aggregate function aggregate. The order in which the column labels are specified is up to you and defines the order of the columns in the resulting list. Only if a column of the type LCHAR or LRAW is listed does the corresponding length field also have to be specified directly before it. An individual column can be specified multiple times.
The addition AS can be used to define an alternative column name a1 a2 ... with a maximum of fourteen digits in the resulting set for every column label col1 col2 .... The system uses the alternative column name in the additions INTO|APPENDING CORRESPONDING FIELDS and ORDER BY. .
http://help.sap.com/saphelp_nw04/helpdata/en/62/10a423384746e8bf5f15ccdd36e8b1/content.htm

Hiding SQL statement in Query Result Window

Hi everyone,
Is it possible to hide the SQL statement from a query result window? This can usually be done by click the orange triangle that is positioned to the left of the SQL string box (to expand and collapse it). The System Queries have this box collapsed per default, is it possible to have this setup as default for all queries, including the custom? If so, please let me know where this can be done.
Cheers

You should do this only with SDK programming - dont allow to show the syntax. The next, but problematic way, is the code you have do inside stored procedure and call only this sp inside the query generator window - if you have there some input parameters, you should use filling variables before executing sp and get it as input parameters to sp.

PL SQL using variable in SQL statement

I am trying to execute several sql statements, that have the same format but different values. Does this
mean I need a bind variable?
ie
select TO_CHAR ( (SYSDATE - 2), 'YYYY_MM_DD') from dual
select TO_CHAR ( (SYSDATE - 4), 'YYYY_MM_DD') from dual
select to_char(add_months(sysdate,-2*1) from dual
When I try to put the values into a varaiable (date, varchar2 or number) I am getting a conversion
error.
Can somebody show me an example of how to do something like this? Or at least point me to the correct
part of the documentation that provides and example. Pardon my syntax as I know it is incorrect
val :=add_months(sysdate,-2*1
select to_char(val) from dual
Thanks in advance to all who answer

Hi,
840386 wrote:
I am trying to execute several sql statements, that have the same format but different values. Does this
mean I need a bind variable?No, you don't need a bind variable, though bind variables may be more efficient than using PL/SQL variables. I don't see where you're trying to use any varibables at all in your examples. Is it in place of the literals, such as 2 or 'YYYY_MM_DD'? You can use either bind varibales or PL/SQL variables in those places.
ie
select TO_CHAR ( (SYSDATE - 2), 'YYYY_MM_DD') from dual
select TO_CHAR ( (SYSDATE - 4), 'YYYY_MM_DD') from dual
select to_char(add_months(sysdate,-2*1) from dualIn PL/SQL, when you have a SELECT statement, you must specify what you want to do with the results. For example, a SELECT ... INTO statement:
SELECT AVG (sal)
INTO    avg_salary
FROM    scott.emp;There's usually no point in SELECTing from dual in PL/SQL. It's not an error, but it's simpler just to use an assignment statement.
When I try to put the values into a varaiable (date, varchar2 or number) I am getting a conversion
error.Post a complete procedure or anonymous block, including variable declarations, that shows exactly what you're trying to do.
>
Can somebody show me an example of how to do something like this? Or at least point me to the correct
part of the documentation that provides and example. Pardon my syntax as I know it is incorrect
val :=add_months(sysdate,-2*1Assuming val is a DATE, that's basically correct. You have unbalanced parentheses (there's a '(', but no matching ')' ), and you need a semicolon (';') at the end of the statement. Perhaps ');' just got cut off when you were posting this.
select to_char(val) from dualAgain, SELECTing from dual is unnecessary, but if you had some way to catch the returned value, that would work.
Usually, the reason why you need to call TO_CHAR is that you want a value in a particular format, which is specified in the 2nd argument to TO_CHAR. Calling TO_CHAR with only one argument is a possible mistake, but not something that would raise an error.
Here's an example that works:
SET     SERVEROUTPUT     ON
DECLARE
     d     DATE;
     v     VARCHAR2 (30);
BEGIN
     d := ADD_MONTHS (SYSDATE, -2);          -- -2 = (-2*1)
     v := TO_CHAR (d, 'DD-Mon-YYYY');
     dbms_output.put_line (v || ' = v');
END;
/Output (when run on March 13, 2011):
13-Jan-2011 = v

Problem with sql statement

hi
i have a strange problem....when i run the following code with the 'if' statement commented out then it works fine. but when i have to search a particular name, say roy , then i include that if statement. but now it gives an error like no such data found.
if the return typ of result.getString(2) is a string type then i wonder what is the problem. i enclose the code below.
import java.sql.*;
import java.io.*;
public class checkDoc
     public static void main(String args[])
          String name;
          ResultSet result;
          try
               name= "roy";
               Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
               Connection con;
               con = DriverManager.getConnection("jdbc:odbc:MyDataSource","","");
               Statement stat = con.createStatement();
               result = stat.executeQuery("Select * from Details1");
               while (result.next())
/* problem here*/
/*     if(result.getString(2).equals(name))
     */               System.out.println(result.getString(2));
          catch(Exception e)
               System.out.println("Error"+e);

thanks alot for that help...but now there is another silly problem!..
i following is perhaps the simplest code possible for insering data into an ACCESS database.(simplest possible with just one column by the name Doc_name and table name is docdetails)...but it gives the error...
"java.sql.SQLException:syntax error or in INSERT INTO statement"
someone plz help!
import java.sql.*;
public class checkDoc4
     public static void main(String args[])
          ResultSet rs;
          try
               Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
               Connection con;
               con = DriverManager.getConnection("jdbc:odbc:MyDataSource2","","");
Statement stat = con.createStatement();
                    stat.executeUpdate("INSERT INTO docdetails" +
     "VALUES ('ankur')");
          catch(Exception e)
               System.out.println("Error"+e);

Sql statement syntax

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