ABAP Select data from SAP table IEAM_REG_PWS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IEAM_REG_PWS
*  INTO TABLE @DATA(IT_IEAM_REG_PWS2).
*--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_IEAM_REG_PWS INDEX 1 INTO DATA(WA_IEAM_REG_PWS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IEAM_REG_PWS>-MANDT = 1.
<IEAM_REG_PWS>-PLANT = 1.
<IEAM_REG_PWS>-ARBPL = 1.
<IEAM_REG_PWS>-ZMODN = 1.
<IEAM_REG_PWS>-WONUM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IEAM_REG_PWS-TPRG1, sy-vline,
  WA_IEAM_REG_PWS-TPRG2, sy-vline,
  WA_IEAM_REG_PWS-TPRG3, sy-vline,
  WA_IEAM_REG_PWS-TPRG4, sy-vline,
  WA_IEAM_REG_PWS-TPRG5, sy-vline,
  WA_IEAM_REG_PWS-TPRG6, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IEAM_REG_PWS 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_IEAM_REG_PWS 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_IEAM_REG_PWS INTO WA_IEAM_REG_PWS.


*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_IEAM_REG_PWS_STR, 
MANDT TYPE STRING,
PLANT TYPE STRING,
ARBPL TYPE STRING,
ZMODN TYPE STRING,
WONUM TYPE STRING,
TPRG1 TYPE STRING,
TPRG2 TYPE STRING,
TPRG3 TYPE STRING,
TPRG4 TYPE STRING,
TPRG5 TYPE STRING,
TPRG6 TYPE STRING,
TPRG7 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IEAM_REG_PWS_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_IEAM_REG_PWS_STR-MANDT sy-vline 
WA_IEAM_REG_PWS_STR-PLANT sy-vline 
WA_IEAM_REG_PWS_STR-ARBPL sy-vline 
WA_IEAM_REG_PWS_STR-ZMODN sy-vline 
WA_IEAM_REG_PWS_STR-WONUM sy-vline 
WA_IEAM_REG_PWS_STR-TPRG1 sy-vline 
WA_IEAM_REG_PWS_STR-TPRG2 sy-vline 
WA_IEAM_REG_PWS_STR-TPRG3 sy-vline 
WA_IEAM_REG_PWS_STR-TPRG4 sy-vline 
WA_IEAM_REG_PWS_STR-TPRG5 sy-vline 
WA_IEAM_REG_PWS_STR-TPRG6 sy-vline 
WA_IEAM_REG_PWS_STR-TPRG7 sy-vline      INTO ld_text SEPARATED BY SPACE.

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