ABAP Select data from SAP table PKR_FORM_CHGTAB into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

Below is a number of ABAP code snippets to demonstrate how to select data from SAP PKR_FORM_CHGTAB 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 PKR_FORM_CHGTAB. 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 PKR_FORM_CHGTAB 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_PKR_FORM_CHGTAB TYPE STANDARD TABLE OF PKR_FORM_CHGTAB,
      WA_PKR_FORM_CHGTAB TYPE PKR_FORM_CHGTAB,
      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: <PKR_FORM_CHGTAB> TYPE PKR_FORM_CHGTAB.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PKR_FORM_CHGTAB
*  INTO TABLE @DATA(IT_PKR_FORM_CHGTAB2).
*--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_PKR_FORM_CHGTAB INDEX 1 INTO DATA(WA_PKR_FORM_CHGTAB2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PKR_FORM_CHGTAB>-REGNO = 1.
<PKR_FORM_CHGTAB>-ENAME = 1.
<PKR_FORM_CHGTAB>-MICOD = 1.
<PKR_FORM_CHGTAB>-MCTXT = 1.
<PKR_FORM_CHGTAB>-SIMSC = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PKR_FORM_CHGTAB-GRADE, sy-vline,
  WA_PKR_FORM_CHGTAB-CHGDT, sy-vline,
  WA_PKR_FORM_CHGTAB-CHG_YY, sy-vline,
  WA_PKR_FORM_CHGTAB-MM_CHG, sy-vline,
  WA_PKR_FORM_CHGTAB-DD_CHG, sy-vline,
  WA_PKR_FORM_CHGTAB-RSMDT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PKR_FORM_CHGTAB 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_PKR_FORM_CHGTAB 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_PKR_FORM_CHGTAB INTO WA_PKR_FORM_CHGTAB.


*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.

*Conversion exit REGNO, internal->external for field REGNO
CALL FUNCTION 'CONVERSION_EXIT_REGNO_OUTPUT'
  EXPORTING
    input =                      WA_PKR_FORM_CHGTAB-REGNO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PKR_FORM_CHGTAB-REGNO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit REGNO, internal->external for field REGNO02
CALL FUNCTION 'CONVERSION_EXIT_REGNO_OUTPUT'
  EXPORTING
    input =                      WA_PKR_FORM_CHGTAB-REGNO02
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PKR_FORM_CHGTAB-REGNO02.
WRITE:/ 'New Value:', ld_input.

*Conversion exit REGNO, internal->external for field REGNO03
CALL FUNCTION 'CONVERSION_EXIT_REGNO_OUTPUT'
  EXPORTING
    input =                      WA_PKR_FORM_CHGTAB-REGNO03
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PKR_FORM_CHGTAB-REGNO03.
WRITE:/ 'New Value:', ld_input.

*Conversion exit REGNO, internal->external for field REGNO04
CALL FUNCTION 'CONVERSION_EXIT_REGNO_OUTPUT'
  EXPORTING
    input =                      WA_PKR_FORM_CHGTAB-REGNO04
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PKR_FORM_CHGTAB-REGNO04.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

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

TYPES: BEGIN OF T_PKR_FORM_CHGTAB_STR, 
REGNO TYPE STRING,
ENAME TYPE STRING,
MICOD TYPE STRING,
MCTXT TYPE STRING,
SIMSC TYPE STRING,
GRADE TYPE STRING,
CHGDT TYPE STRING,
CHG_YY TYPE STRING,
MM_CHG TYPE STRING,
DD_CHG TYPE STRING,
RSMDT TYPE STRING,
REGNO02 TYPE STRING,
ENAME02 TYPE STRING,
MICOD02 TYPE STRING,
MCTXT02 TYPE STRING,
SIMSC02 TYPE STRING,
GRADE02 TYPE STRING,
CHGDT02 TYPE STRING,
CHG_YY02 TYPE STRING,
MM_CHG02 TYPE STRING,
DD_CHG02 TYPE STRING,
RSMDT02 TYPE STRING,
REGNO03 TYPE STRING,
ENAME03 TYPE STRING,
MICOD03 TYPE STRING,
MCTXT03 TYPE STRING,
SIMSC03 TYPE STRING,
GRADE03 TYPE STRING,
CHGDT03 TYPE STRING,
CHG_YY03 TYPE STRING,
MM_CHG03 TYPE STRING,
DD_CHG03 TYPE STRING,
RSMDT03 TYPE STRING,
REGNO04 TYPE STRING,
ENAME04 TYPE STRING,
MICOD04 TYPE STRING,
MCTXT04 TYPE STRING,
SIMSC04 TYPE STRING,
GRADE04 TYPE STRING,
CHGDT04 TYPE STRING,
CHG_YY04 TYPE STRING,
MM_CHG04 TYPE STRING,
DD_CHG04 TYPE STRING,
RSMDT04 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PKR_FORM_CHGTAB_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_PKR_FORM_CHGTAB_STR-REGNO sy-vline 
WA_PKR_FORM_CHGTAB_STR-ENAME sy-vline 
WA_PKR_FORM_CHGTAB_STR-MICOD sy-vline 
WA_PKR_FORM_CHGTAB_STR-MCTXT sy-vline 
WA_PKR_FORM_CHGTAB_STR-SIMSC sy-vline 
WA_PKR_FORM_CHGTAB_STR-GRADE sy-vline 
WA_PKR_FORM_CHGTAB_STR-CHGDT sy-vline 
WA_PKR_FORM_CHGTAB_STR-CHG_YY sy-vline 
WA_PKR_FORM_CHGTAB_STR-MM_CHG sy-vline 
WA_PKR_FORM_CHGTAB_STR-DD_CHG sy-vline 
WA_PKR_FORM_CHGTAB_STR-RSMDT sy-vline 
WA_PKR_FORM_CHGTAB_STR-REGNO02 sy-vline 
WA_PKR_FORM_CHGTAB_STR-ENAME02 sy-vline 
WA_PKR_FORM_CHGTAB_STR-MICOD02 sy-vline 
WA_PKR_FORM_CHGTAB_STR-MCTXT02 sy-vline 
WA_PKR_FORM_CHGTAB_STR-SIMSC02 sy-vline 
WA_PKR_FORM_CHGTAB_STR-GRADE02 sy-vline 
WA_PKR_FORM_CHGTAB_STR-CHGDT02 sy-vline 
WA_PKR_FORM_CHGTAB_STR-CHG_YY02 sy-vline 
WA_PKR_FORM_CHGTAB_STR-MM_CHG02 sy-vline 
WA_PKR_FORM_CHGTAB_STR-DD_CHG02 sy-vline 
WA_PKR_FORM_CHGTAB_STR-RSMDT02 sy-vline 
WA_PKR_FORM_CHGTAB_STR-REGNO03 sy-vline 
WA_PKR_FORM_CHGTAB_STR-ENAME03 sy-vline 
WA_PKR_FORM_CHGTAB_STR-MICOD03 sy-vline 
WA_PKR_FORM_CHGTAB_STR-MCTXT03 sy-vline 
WA_PKR_FORM_CHGTAB_STR-SIMSC03 sy-vline 
WA_PKR_FORM_CHGTAB_STR-GRADE03 sy-vline 
WA_PKR_FORM_CHGTAB_STR-CHGDT03 sy-vline 
WA_PKR_FORM_CHGTAB_STR-CHG_YY03 sy-vline 
WA_PKR_FORM_CHGTAB_STR-MM_CHG03 sy-vline 
WA_PKR_FORM_CHGTAB_STR-DD_CHG03 sy-vline 
WA_PKR_FORM_CHGTAB_STR-RSMDT03 sy-vline 
WA_PKR_FORM_CHGTAB_STR-REGNO04 sy-vline 
WA_PKR_FORM_CHGTAB_STR-ENAME04 sy-vline 
WA_PKR_FORM_CHGTAB_STR-MICOD04 sy-vline 
WA_PKR_FORM_CHGTAB_STR-MCTXT04 sy-vline 
WA_PKR_FORM_CHGTAB_STR-SIMSC04 sy-vline 
WA_PKR_FORM_CHGTAB_STR-GRADE04 sy-vline 
WA_PKR_FORM_CHGTAB_STR-CHGDT04 sy-vline 
WA_PKR_FORM_CHGTAB_STR-CHG_YY04 sy-vline 
WA_PKR_FORM_CHGTAB_STR-MM_CHG04 sy-vline 
WA_PKR_FORM_CHGTAB_STR-DD_CHG04 sy-vline 
WA_PKR_FORM_CHGTAB_STR-RSMDT04 sy-vline      INTO ld_text SEPARATED BY SPACE.

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