ABAP Select data from SAP table P01BA_DSAB into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P01BA_DSAB 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 P01BA_DSAB. 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 P01BA_DSAB 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_P01BA_DSAB TYPE STANDARD TABLE OF P01BA_DSAB,
      WA_P01BA_DSAB TYPE P01BA_DSAB,
      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: <P01BA_DSAB> TYPE P01BA_DSAB.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P01BA_DSAB.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P01BA_DSAB
  INTO TABLE IT_P01BA_DSAB.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P01BA_DSAB
*  INTO TABLE @DATA(IT_P01BA_DSAB2).
*--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_P01BA_DSAB INDEX 1 INTO DATA(WA_P01BA_DSAB2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P01BA_DSAB ASSIGNING <P01BA_DSAB>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P01BA_DSAB>-MANDT = 1.
<P01BA_DSAB>-GUID = 1.
<P01BA_DSAB>-VERNR = 1.
<P01BA_DSAB>-BBNRAB = 1.
<P01BA_DSAB>-ED = 1.

ENDLOOP.

LOOP AT IT_P01BA_DSAB INTO WA_P01BA_DSAB.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P01BA_DSAB-FEKZ, sy-vline,
  WA_P01BA_DSAB-FEAN, sy-vline,
  WA_P01BA_DSAB-VSNR, sy-vline,
  WA_P01BA_DSAB-BBNRVU, sy-vline,
  WA_P01BA_DSAB-AZVU, sy-vline,
  WA_P01BA_DSAB-BBNRAS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P01BA_DSAB 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_P01BA_DSAB 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_P01BA_DSAB INTO WA_P01BA_DSAB.


*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_P01BA_DSAB_STR, 
MANDT TYPE STRING,
GUID TYPE STRING,
VERNR TYPE STRING,
BBNRAB TYPE STRING,
ED TYPE STRING,
FEKZ TYPE STRING,
FEAN TYPE STRING,
VSNR TYPE STRING,
BBNRVU TYPE STRING,
AZVU TYPE STRING,
BBNRAS TYPE STRING,
DSID TYPE STRING,
AVBEG TYPE STRING,
MMNA TYPE STRING,
MMAN TYPE STRING,
MMAG TYPE STRING,
MMAB TYPE STRING,
MMSE TYPE STRING,
MMSA TYPE STRING,
MMSB TYPE STRING,
MMAZ TYPE STRING,
MMEN TYPE STRING,
MMFZ TYPE STRING,
MMHA TYPE STRING,
MMKE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P01BA_DSAB_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_P01BA_DSAB_STR-MANDT sy-vline 
WA_P01BA_DSAB_STR-GUID sy-vline 
WA_P01BA_DSAB_STR-VERNR sy-vline 
WA_P01BA_DSAB_STR-BBNRAB sy-vline 
WA_P01BA_DSAB_STR-ED sy-vline 
WA_P01BA_DSAB_STR-FEKZ sy-vline 
WA_P01BA_DSAB_STR-FEAN sy-vline 
WA_P01BA_DSAB_STR-VSNR sy-vline 
WA_P01BA_DSAB_STR-BBNRVU sy-vline 
WA_P01BA_DSAB_STR-AZVU sy-vline 
WA_P01BA_DSAB_STR-BBNRAS sy-vline 
WA_P01BA_DSAB_STR-DSID sy-vline 
WA_P01BA_DSAB_STR-AVBEG sy-vline 
WA_P01BA_DSAB_STR-MMNA sy-vline 
WA_P01BA_DSAB_STR-MMAN sy-vline 
WA_P01BA_DSAB_STR-MMAG sy-vline 
WA_P01BA_DSAB_STR-MMAB sy-vline 
WA_P01BA_DSAB_STR-MMSE sy-vline 
WA_P01BA_DSAB_STR-MMSA sy-vline 
WA_P01BA_DSAB_STR-MMSB sy-vline 
WA_P01BA_DSAB_STR-MMAZ sy-vline 
WA_P01BA_DSAB_STR-MMEN sy-vline 
WA_P01BA_DSAB_STR-MMFZ sy-vline 
WA_P01BA_DSAB_STR-MMHA sy-vline 
WA_P01BA_DSAB_STR-MMKE sy-vline      INTO ld_text SEPARATED BY SPACE.

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