Increment Dt start with day greater than the Dt at the end of the year Prev in Pro * C

Morning people and greetings from Toronto.

I'm trying to change a Pro * C program. Since ages I touched a Pro * C program but I have made an attempt for her. I would probably need some help andhopefully is the right forum I could nto seem to find any section decicated Pro * C programs.

Here's what its supposed to do. I'm supposed to check if a Start Date of overlap between the start dates and dates from the end of the previous year, and if so, I'm supposed to assign one day Start Date greater than the Date of the end of the previous year.

I have a control panel that stores records for start date and end Date for each year. Here's what I have for 2010.

Start date = 8 May 2010 '; End date = may 12, 2011 'year =' 2010 From now the previous record in the table 1 (where the new record is supposed to be inserted) has a record that looks like this:
DOC_ID     NAME               YEAR         START_DATE     END_DATE
------------------------------------------------------------------------------------------------
999999     Mary Poppins      2009         03-May-2009      08-May-2010
Now, based on the control table, the Start Date for 2010 coincides with the Date of the end of 2009. In this case, I would need to move the start date = may 9, 2010 "(Date of end + 1)

Here is my ProC program in hand
/* Include Headers */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <math.h>
---------------------------
/* Define constants */
---------------------------
#define  nullterm(string) string.arr[string.len] = '\0';
/* SQL Host Variables */
exec sql begin declare section;
exec sql include sqlca;

 varchar   ctrl_start_date[11];
 short     ctrl_start_date_ind;
 varchar   ctrl_end_date[11];
 short     ctrl_end_date_ind;

 varchar   end_date[11];
 short     end_date_ind;

 int       exist_end_date_flag;
 short     exist_end_date_flag_ind;

exec sql end declare section;


/* Function Prototypes */

void check_date_overlap();


void main(int argc, char *argv[])
{
/* Coding starts here */

void get_ctrl_dates()
{
 exec sql
  select  to_char(trunc(ctrl_start_date),'YYYY/MM/DD'),
          to_char(trunc(ctrl_end_date),'YYYY/MM/DD')
  into    :ctrl_start_date :ctrl_start_date_ind,
          :ctrl_end_date  :ctrl_end_date_ind
  from    control_tb
  where   current_yyyy = :year_number;
}

   check_date_overlap();

   if (strcmp( (char *)run_mode.arr,"N")==0)
   {
    check_date_overlap();
    create_person_rec(); /* This will insert record into person_tb table */
   }
}

/***********************/
/* CHECK_DATE_OVERLAP  */ 
/***********************/
void check_date_overlap()
{

 exist_end_date_flag = 0; /* assume he does not have a record */

 exec sql
  select count(*), end_date + 1
  into   :exist_end_date_flag exist_end_date_flag_ind,
         :end_date :end_date_ind
  from   person_tb
  where  doc_id = :doc_id
  and (( :ctrl_start_date between start_date  and end_date ) or
       ( :ctrl_end_date   between start_date  and end_date ) or
       ( start_date between :ctrl_start_date  and :ctrl_end_date ) or
       ( end_date   between :ctrl_start_date  and :ctrl_end_date ))
  and    year_number = (:year_number - 1)
  group by end_date
  having count(*) = 1;

  /*** Error Check Routine goes in here ***/

  /* Overlapping of dates; Set the Start Date equal End Date + 1 to avoid overlap */
  if (exist_end_date_flag == 1)
  {
   print_to_err_file("The Start Date is overlapping with a previous period.",0);
  }

   nullterm(end_date);

} /* check_date_overlap */
Here would be my question:

My question is, should the SQL above be written like this instead? 
/***********************/
/* CHECK_DATE_OVERLAP  */ 
/***********************/
void check_date_overlap()
{

 exist_end_date_flag = 0; /* assume he does not have a record */

 exec sql
  select count(*), end_date
  into   :exist_end_date_flag exist_end_date_flag_ind,
         :end_date :end_date_ind
  from   person_tb
  where  doc_id = :doc_id
  and (( :ctrl_start_date between start_date  and end_date ) or
       ( :ctrl_end_date   between start_date  and end_date ) or
       ( start_date between :ctrl_start_date  and :ctrl_end_date ) or
       ( end_date   between :ctrl_start_date  and :ctrl_end_date ))
  and    year_number = (:year_number - 1)
  group by end_date;

  /*** Error Check Routine goes in here ***/

  /* Overlapping of dates; Set the Start Date equal End Date + 1 to avoid overlap */
  if (exist_end_date_flag == 1)
  {
    /* Is this even correct or would I have to do a strcpy?.
        Also note that I am overwriting ctrl_start_date which
        was fetched earlier in get_ctrl_dates() */
   ctrl_start_date = end_date + 1;
   print_to_err_file("The Start Date is overlapping with a previous period.",0);
  }

   nullterm(end_date);

} /* check_date_overlap */
Published by: Raj404261 on June 10, 2009 11:21

You can put your code between the {code}

As
{code}
your code...
...
{code}

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Tags: Database

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