ABAP Select data from SAP table PIQSELMADM into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PIQSELMADM table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to PIQSELMADM. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the PIQSELMADM table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_PIQSELMADM TYPE STANDARD TABLE OF PIQSELMADM,
      WA_PIQSELMADM TYPE PIQSELMADM,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: <PIQSELMADM> TYPE PIQSELMADM.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PIQSELMADM.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PIQSELMADM
  INTO TABLE IT_PIQSELMADM.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PIQSELMADM
*  INTO TABLE @DATA(IT_PIQSELMADM2).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_PIQSELMADM INDEX 1 INTO DATA(WA_PIQSELMADM2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PIQSELMADM ASSIGNING <PIQSELMADM>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PIQSELMADM>-STOBJID = 1.
<PIQSELMADM>-SCOBJID = 1.
<PIQSELMADM>-CGOBJID = 1.
<PIQSELMADM>-PERYR = 1.
<PIQSELMADM>-PERID = 1.

ENDLOOP.

LOOP AT IT_PIQSELMADM INTO WA_PIQSELMADM.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PIQSELMADM-FL_ADMITTED, sy-vline,
  WA_PIQSELMADM-FL_APPLIED, sy-vline,
  WA_PIQSELMADM-FL_REJECTED, sy-vline,
  WA_PIQSELMADM-FL_DECLINE, sy-vline,
  WA_PIQSELMADM-FL_WITHDRAWAL, sy-vline,
  WA_PIQSELMADM-ADM_CATEG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PIQSELMADM you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_PIQSELMADM TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_PIQSELMADM INTO WA_PIQSELMADM.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_PIQSELMADM_STR, 
STOBJID TYPE STRING,
SCOBJID TYPE STRING,
CGOBJID TYPE STRING,
PERYR TYPE STRING,
PERID TYPE STRING,
FL_ADMITTED TYPE STRING,
FL_APPLIED TYPE STRING,
FL_REJECTED TYPE STRING,
FL_DECLINE TYPE STRING,
FL_WITHDRAWAL TYPE STRING,
ADM_CATEG TYPE STRING,
ADM_ENRCATEG TYPE STRING,
ADM_CODE TYPE STRING,
CHOICE_NO TYPE STRING,
ADM_ACLEVEL TYPE STRING,
ADM_PROGCLASS TYPE STRING,
NATIO TYPE STRING,
ETHNIC TYPE STRING,
STGRP TYPE STRING,
FOBJID TYPE STRING,
OOBJID TYPE STRING,
RESID_STATUS TYPE STRING,
ISSEO TYPE STRING,
TESTTYPE TYPE STRING,
TESTTOTRES TYPE STRING,
STUDENTHOLD TYPE STRING,
STUDENTSTATUS TYPE STRING,
GENDER TYPE STRING,
PRTYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PIQSELMADM_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_PIQSELMADM_STR-STOBJID sy-vline 
WA_PIQSELMADM_STR-SCOBJID sy-vline 
WA_PIQSELMADM_STR-CGOBJID sy-vline 
WA_PIQSELMADM_STR-PERYR sy-vline 
WA_PIQSELMADM_STR-PERID sy-vline 
WA_PIQSELMADM_STR-FL_ADMITTED sy-vline 
WA_PIQSELMADM_STR-FL_APPLIED sy-vline 
WA_PIQSELMADM_STR-FL_REJECTED sy-vline 
WA_PIQSELMADM_STR-FL_DECLINE sy-vline 
WA_PIQSELMADM_STR-FL_WITHDRAWAL sy-vline 
WA_PIQSELMADM_STR-ADM_CATEG sy-vline 
WA_PIQSELMADM_STR-ADM_ENRCATEG sy-vline 
WA_PIQSELMADM_STR-ADM_CODE sy-vline 
WA_PIQSELMADM_STR-CHOICE_NO sy-vline 
WA_PIQSELMADM_STR-ADM_ACLEVEL sy-vline 
WA_PIQSELMADM_STR-ADM_PROGCLASS sy-vline 
WA_PIQSELMADM_STR-NATIO sy-vline 
WA_PIQSELMADM_STR-ETHNIC sy-vline 
WA_PIQSELMADM_STR-STGRP sy-vline 
WA_PIQSELMADM_STR-FOBJID sy-vline 
WA_PIQSELMADM_STR-OOBJID sy-vline 
WA_PIQSELMADM_STR-RESID_STATUS sy-vline 
WA_PIQSELMADM_STR-ISSEO sy-vline 
WA_PIQSELMADM_STR-TESTTYPE sy-vline 
WA_PIQSELMADM_STR-TESTTOTRES sy-vline 
WA_PIQSELMADM_STR-STUDENTHOLD sy-vline 
WA_PIQSELMADM_STR-STUDENTSTATUS sy-vline 
WA_PIQSELMADM_STR-GENDER sy-vline 
WA_PIQSELMADM_STR-PRTYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.