SAP S021Z ABAP Select data from SAP table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP S021Z 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 S021Z. 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 S021Z 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_S021Z TYPE STANDARD TABLE OF S021Z,
      WA_S021Z TYPE S021Z,
      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: <S021Z> TYPE S021Z.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_S021Z.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM S021Z
  INTO TABLE IT_S021Z.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM S021Z
*  INTO TABLE @DATA(IT_S021Z2).
*--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_S021Z INDEX 1 INTO DATA(WA_S021Z2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_S021Z ASSIGNING <S021Z>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<S021Z>-P_DLZ = 1.
<S021Z>-S_DLZ = 1.
<S021Z>-I_DLZ = 1.
<S021Z>-PIDLZ = 1.
<S021Z>-SIDLZ = 1.

ENDLOOP.

LOOP AT IT_S021Z INTO WA_S021Z.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_S021Z-S_DFZ, sy-vline,
  WA_S021Z-I_DFZ, sy-vline,
  WA_S021Z-S_WTZ, sy-vline,
  WA_S021Z-I_WTZ, sy-vline,
  WA_S021Z-WTZAB, sy-vline,
  WA_S021Z-PS_FREI, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_S021Z 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_S021Z 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_S021Z INTO WA_S021Z.


*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_S021Z_STR, 
P_DLZ TYPE STRING,
S_DLZ TYPE STRING,
I_DLZ TYPE STRING,
PIDLZ TYPE STRING,
SIDLZ TYPE STRING,
S_DFZ TYPE STRING,
I_DFZ TYPE STRING,
S_WTZ TYPE STRING,
I_WTZ TYPE STRING,
WTZAB TYPE STRING,
PS_FREI TYPE STRING,
PI_FREI TYPE STRING,
SI_FREI TYPE STRING,
PS_STAR TYPE STRING,
PI_STAR TYPE STRING,
SI_STAR TYPE STRING,
PS_LIEF TYPE STRING,
PI_LIEF TYPE STRING,
SI_LIEF TYPE STRING,
PGMNG TYPE STRING,
PSMNG TYPE STRING,
WEMNG TYPE STRING,
PS_MENG TYPE STRING,
PI_MENG TYPE STRING,
SI_MENG TYPE STRING,
PAMNG TYPE STRING,
PSAMG TYPE STRING,
IAMNG TYPE STRING,
PS_AUSS TYPE STRING,
PI_AUSS TYPE STRING,
SI_AUSS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_S021Z_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_S021Z_STR-P_DLZ sy-vline 
WA_S021Z_STR-S_DLZ sy-vline 
WA_S021Z_STR-I_DLZ sy-vline 
WA_S021Z_STR-PIDLZ sy-vline 
WA_S021Z_STR-SIDLZ sy-vline 
WA_S021Z_STR-S_DFZ sy-vline 
WA_S021Z_STR-I_DFZ sy-vline 
WA_S021Z_STR-S_WTZ sy-vline 
WA_S021Z_STR-I_WTZ sy-vline 
WA_S021Z_STR-WTZAB sy-vline 
WA_S021Z_STR-PS_FREI sy-vline 
WA_S021Z_STR-PI_FREI sy-vline 
WA_S021Z_STR-SI_FREI sy-vline 
WA_S021Z_STR-PS_STAR sy-vline 
WA_S021Z_STR-PI_STAR sy-vline 
WA_S021Z_STR-SI_STAR sy-vline 
WA_S021Z_STR-PS_LIEF sy-vline 
WA_S021Z_STR-PI_LIEF sy-vline 
WA_S021Z_STR-SI_LIEF sy-vline 
WA_S021Z_STR-PGMNG sy-vline 
WA_S021Z_STR-PSMNG sy-vline 
WA_S021Z_STR-WEMNG sy-vline 
WA_S021Z_STR-PS_MENG sy-vline 
WA_S021Z_STR-PI_MENG sy-vline 
WA_S021Z_STR-SI_MENG sy-vline 
WA_S021Z_STR-PAMNG sy-vline 
WA_S021Z_STR-PSAMG sy-vline 
WA_S021Z_STR-IAMNG sy-vline 
WA_S021Z_STR-PS_AUSS sy-vline 
WA_S021Z_STR-PI_AUSS sy-vline 
WA_S021Z_STR-SI_AUSS sy-vline      INTO ld_text SEPARATED BY SPACE.

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

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