ABAP Select data from SAP table SLS_ZAPAD into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SLS_ZAPAD
*  INTO TABLE @DATA(IT_SLS_ZAPAD2).
*--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_SLS_ZAPAD INDEX 1 INTO DATA(WA_SLS_ZAPAD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SLS_ZAPAD>-QUANTITTY = 1.
<SLS_ZAPAD>-CC_VALID_T = 1.
<SLS_ZAPAD>-KUNR2 = 1.
<SLS_ZAPAD>-BLNR2 = 1.
<SLS_ZAPAD>-VBELN = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SLS_ZAPAD-BLNR3, sy-vline,
  WA_SLS_ZAPAD-BLNR4, sy-vline,
  WA_SLS_ZAPAD-LSFPLNR, sy-vline,
  WA_SLS_ZAPAD-LSPSTLZ, sy-vline,
  WA_SLS_ZAPAD-LSPATEST, sy-vline,
  WA_SLS_ZAPAD-LSPREPAY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SLS_ZAPAD 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_SLS_ZAPAD 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_SLS_ZAPAD INTO WA_SLS_ZAPAD.


*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_SLS_ZAPAD_STR, 
QUANTITTY TYPE STRING,
CC_VALID_T TYPE STRING,
KUNR2 TYPE STRING,
BLNR2 TYPE STRING,
VBELN TYPE STRING,
BLNR3 TYPE STRING,
BLNR4 TYPE STRING,
LSFPLNR TYPE STRING,
LSPSTLZ TYPE STRING,
LSPATEST TYPE STRING,
LSPREPAY TYPE STRING,
LSCREATOR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SLS_ZAPAD_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_SLS_ZAPAD_STR-QUANTITTY sy-vline 
WA_SLS_ZAPAD_STR-CC_VALID_T sy-vline 
WA_SLS_ZAPAD_STR-KUNR2 sy-vline 
WA_SLS_ZAPAD_STR-BLNR2 sy-vline 
WA_SLS_ZAPAD_STR-VBELN sy-vline 
WA_SLS_ZAPAD_STR-BLNR3 sy-vline 
WA_SLS_ZAPAD_STR-BLNR4 sy-vline 
WA_SLS_ZAPAD_STR-LSFPLNR sy-vline 
WA_SLS_ZAPAD_STR-LSPSTLZ sy-vline 
WA_SLS_ZAPAD_STR-LSPATEST sy-vline 
WA_SLS_ZAPAD_STR-LSPREPAY sy-vline 
WA_SLS_ZAPAD_STR-LSCREATOR sy-vline      INTO ld_text SEPARATED BY SPACE.

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