ABAP Select data from SAP table PIN_F12BA into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PIN_F12BA 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 PIN_F12BA. 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 PIN_F12BA 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_PIN_F12BA TYPE STANDARD TABLE OF PIN_F12BA,
      WA_PIN_F12BA TYPE PIN_F12BA,
      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: <PIN_F12BA> TYPE PIN_F12BA.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PIN_F12BA.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PIN_F12BA
  INTO TABLE IT_PIN_F12BA.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PIN_F12BA
*  INTO TABLE @DATA(IT_PIN_F12BA2).
*--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_PIN_F12BA INDEX 1 INTO DATA(WA_PIN_F12BA2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PIN_F12BA ASSIGNING <PIN_F12BA>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PIN_F12BA>-CNTR2 = 1.
<PIN_F12BA>-PERNR = 1.
<PIN_F12BA>-EVCLS = 1.
<PIN_F12BA>-TPERK = 1.
<PIN_F12BA>-ERCVR = 1.

ENDLOOP.

LOOP AT IT_PIN_F12BA INTO WA_PIN_F12BA.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PIN_F12BA-VPERK, sy-vline,
  WA_PIN_F12BA-AMT_CURR, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_PIN_F12BA 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_PIN_F12BA 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_PIN_F12BA INTO WA_PIN_F12BA.


*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_PIN_F12BA_STR, 
CNTR2 TYPE STRING,
PERNR TYPE STRING,
EVCLS TYPE STRING,
TPERK TYPE STRING,
ERCVR TYPE STRING,
VPERK TYPE STRING,
AMT_CURR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PIN_F12BA_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_PIN_F12BA_STR-CNTR2 sy-vline 
WA_PIN_F12BA_STR-PERNR sy-vline 
WA_PIN_F12BA_STR-EVCLS sy-vline 
WA_PIN_F12BA_STR-TPERK sy-vline 
WA_PIN_F12BA_STR-ERCVR sy-vline 
WA_PIN_F12BA_STR-VPERK sy-vline 
WA_PIN_F12BA_STR-AMT_CURR sy-vline      INTO ld_text SEPARATED BY SPACE.

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