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Home -> Community -> Usenet -> c.d.o.server -> Re: How to make the spaces be gone?
By default pro*C expands char[n] fields with blanks and terminates it
with a '\0' when fetching values.
Just right trim the values after fetching e.g. with:
/*********************************************************************** **** *** dbTrim ***************************************************************************/
char* cpPos = cpString;
if (cpString==NULL)
return;
/* delete leading spaces */
if (isspace(*cpPos))
{
do
++cpPos;
while (isspace(*cpPos));
strcpy(cpString,cpPos);
/* delete trailing spaces */
cpPos = cpString + strlen(cpString);
if (cpPos>cpString && isspace(cpPos[-1]))
{
do
--cpPos;
while (cpPos>cpString && isspace(cpPos[-1]));
*cpPos = '\0';
In article <7ucini$sd9$1_at_nnrp1.deja.com>, Alex Vinokur <alexander.vinokur_at_telrad.co.il> wrote:
> Hi,
>
> Using Pro*C++ I select all records
> of specific table from Database.
>
> However I can't get *pure* (without spaces) value
> of VARCHAR2-column.
>
> For instance (see below):
> 1) value of column FFF4 in table FFF is
> ZZZ_1_4 // Record#1
> [missing] // Record#2
> ZZZ_3_4 // Record#3
>
> 2) My host variable col_value4 are char [15].
>
> 3) Value of col_value4 is
> col [4] : value = <ZZZ_1_4 >, indicator = <0> // Record#1
> col [4] : value = < >, indicator = <-1> // Record#2
> col [4] : value = <ZZZ_3_4 >, indicator = <0> // Record#3
> Note. The values contain spaces.
>
> 4) I would like to get output as following (using Pro*/C++ features):
> col [4] : value = <ZZZ_1_4>, indicator = <0> // Record#1
> col [4] : value = --- Never mind ---, indicator = <-1> //
Record#2
> col [4] : value = <ZZZ_3_4>, indicator = <0> // Record#3
>
> Thanks in advance,
> Alex
>
> //#########################################################
> //------------------- Pro*C++ code : BEGIN ----------------
>
> // File ttt2.pc
>
> #include <stdio.h>
> #include <strings.h>
> #include <assert.h>
> #include <iostream.h>
>
> #include <sqlca.h>
> #include <oraca.h>
>
> //=========================================
> #define PRINT_VALUE(col_no, col_value, col_indicator) \
> cout << "" \
> << " \t" \
> << "col [" \
> << col_no \
> << "] : " \
> << "value = <" \
> << col_value \
> << ">" \
> << ", " \
> << "indicator = <" \
> << col_indicator \
> << ">" \
> << endl
>
> //=========================================
> void sql_error_print (
> const char * const msg_i,
> const char * const conclusion_i
> )
> {
> cout << msg_i
> << " : "
> << conclusion_i
> << "; sqlca.sqlcode = "
> << sqlca.sqlcode
> << endl;
>
> cout << ""
> << sqlca.sqlerrm.sqlerrmc
> << endl;
>
> cout << "in "
> << oraca.orastxt.orastxtc
> << "..."
> << endl;
>
> cout << "on line "
> << oraca.oraslnr
> << " "
> << "of "
> << oraca.orasfnm.orasfnmc
> << endl;
>
> EXEC SQL WHENEVER SQLERROR CONTINUE;
>
> EXEC SQL ROLLBACK RELEASE;
>
> } // void sql_error_print ()
>
> //=========================================
> void sql_error_action (const char * const msg_i)
> {
> sql_error_print (msg_i, "Cannot Do It");
> assert (0);
> } // void sql_error_action ()
>
> //=========================================
> void ListRecords()
> {
> EXEC SQL BEGIN DECLARE SECTION;
> char *select_col_value="SELECT * FROM FFF";
>
> long col_value1;
> char col_value2[15];
> char col_value3[15];
> char col_value4[15];
> char col_value5[15];
>
> short indicator1;
> short indicator2;
> short indicator3;
> short indicator4;
> short indicator5;
>
> EXEC SQL END DECLARE SECTION;
>
> //===========================
> EXEC SQL WHENEVER SQLERROR DO sql_error_action ("PREPARE
> the_exec");
> EXEC SQL PREPARE the_exec FROM :select_col_value;
>
> //===========================
> EXEC SQL WHENEVER SQLERROR DO sql_error_action ("DECLARE
> the_cursor");
> EXEC SQL DECLARE the_cursor CURSOR FOR the_exec;
>
> //===========================
> EXEC SQL WHENEVER SQLERROR DO sql_error_action ("OPEN
> the_cursor");
> EXEC SQL OPEN the_cursor;
>
> cout << "Available records: " << endl;
>
> for(int i = 1; ;i++)
> {
> EXEC SQL WHENEVER SQLERROR DO sql_error_action ("FETCH
> the_cursor");
> EXEC SQL FETCH the_cursor INTO
> :col_value1 INDICATOR
> :indicator1,
> :col_value2 INDICATOR
> :indicator2,
> :col_value3 INDICATOR
> :indicator3,
> :col_value4 INDICATOR
> :indicator4,
> :col_value5 INDICATOR
> :indicator5;
>
> if (sqlca.sqlcode == 1403)
> {
> cout << "BREAK-" << sqlca.sqlcode << endl;
> break;
> }
>
> //===========================================
> cout << "======================================="
> << endl;
> cout << "select ["
> << i
> << "] : \t"
> << "sqlca.sqlcode = <"
> << sqlca.sqlcode
> << ">"
> << endl;
> PRINT_VALUE (1, col_value1, indicator1);
> PRINT_VALUE (2, col_value2, indicator2);
> PRINT_VALUE (3, col_value3, indicator3);
> PRINT_VALUE (4, col_value4, indicator4);
> PRINT_VALUE (5, col_value5, indicator5);
> cout << endl;
>
> //===========================================
>
> } // for(int i = 1; ;i++)
>
> cout << "FINISH " << endl;
>
> EXEC SQL WHENEVER SQLERROR DO sql_error_action ("CLOSE
> the_cursor");
> EXEC SQL CLOSE the_cursor;
>
> } // void ListRecords()
>
> //===============================
> int main ()
> {
> EXEC SQL BEGIN DECLARE SECTION;
> char *username = "aaa";
> char *password = "bbb";
> EXEC SQL END DECLARE SECTION;
>
> //===========================
> EXEC SQL WHENEVER SQLERROR DO sql_error_action ("Connect to
> ORACLE");
> EXEC SQL CONNECT :username IDENTIFIED BY :password;
> cout << endl << "Connected to ORACLE." << endl;
>
> //===========================
> cout << endl;
> ListRecords ();
>
> return 0;
> }
>
> //------------------- Pro*C++ code : END ------------------
>
> //#########################################################
> //------------------- Database Status : BEGIN -------------
>
> SQL> select * from FFF;
>
> FFF1 FFF2 FFF3 FFF4 FFF5
> ---------- ---------- ---------- ------------------- ------------
> 19 13 ZZZ_1_4 ZZZ_1_5
> 12 22 ZZZ_2_5
> 15 32 33 ZZZ_3_4
>
> //------------------- Database Status : END ---------------
>
> //#########################################################
> //------------------- Running Results : BEGIN -------------
>
> Connected to ORACLE.
>
> Available records:
> =======================================
> select [1] : sqlca.sqlcode = <0>
> col [1] : value = <19>, indicator = <0>
> col [2] : value = < >, indicator = <-1>
> col [3] : value = <13 >, indicator = <0>
> col [4] : value = <ZZZ_1_4 >, indicator = <0>
> col [5] : value = <ZZZ_1_5 >, indicator = <0>
>
> =======================================
> select [2] : sqlca.sqlcode = <0>
> col [1] : value = <12>, indicator = <0>
> col [2] : value = <22 >, indicator = <0>
> col [3] : value = < >, indicator = <-1>
> col [4] : value = < >, indicator = <-1>
> col [5] : value = <ZZZ_2_5 >, indicator = <0>
>
> =======================================
> select [3] : sqlca.sqlcode = <0>
> col [1] : value = <15>, indicator = <0>
> col [2] : value = <32 >, indicator = <0>
> col [3] : value = <33 >, indicator = <0>
> col [4] : value = <ZZZ_3_4 >, indicator = <0>
> col [5] : value = < >, indicator = <-1>
>
> BREAK-1403
> FINISH
>
> //------------------- Running Results : END ---------------
>
> //#########################################################
> //------------------- Environment --------------------------
>
> === Oracle 8.0.5
> === Pro*C/C++ : Release 8.0.5.0.0
> === SunOS 5.6
>
> //---------------------------------------------------------
>
> //#########################################################
>
> Sent via Deja.com http://www.deja.com/
> Before you buy.
Sent via Deja.com http://www.deja.com/
Before you buy.
Received on Mon Oct 18 1999 - 09:13:35 CDT
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