ABAP Select data from SAP table P12BOW_REC2B_1_2017 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P12BOW_REC2B_1_2017 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 P12BOW_REC2B_1_2017. 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 P12BOW_REC2B_1_2017 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_P12BOW_REC2B_1_2017 TYPE STANDARD TABLE OF P12BOW_REC2B_1_2017,
      WA_P12BOW_REC2B_1_2017 TYPE P12BOW_REC2B_1_2017,
      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: <P12BOW_REC2B_1_2017> TYPE P12BOW_REC2B_1_2017.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P12BOW_REC2B_1_2017.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P12BOW_REC2B_1_2017
  INTO TABLE IT_P12BOW_REC2B_1_2017.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P12BOW_REC2B_1_2017
*  INTO TABLE @DATA(IT_P12BOW_REC2B_1_20172).
*--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_P12BOW_REC2B_1_2017 INDEX 1 INTO DATA(WA_P12BOW_REC2B_1_20172).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P12BOW_REC2B_1_2017 ASSIGNING <P12BOW_REC2B_1_2017>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P12BOW_REC2B_1_2017>-BTRID = 1.
<P12BOW_REC2B_1_2017>-BTIYR = 1.
<P12BOW_REC2B_1_2017>-BTREG = 1.
<P12BOW_REC2B_1_2017>-BTRET = 1.
<P12BOW_REC2B_1_2017>-BTADM = 1.

ENDLOOP.

LOOP AT IT_P12BOW_REC2B_1_2017 INTO WA_P12BOW_REC2B_1_2017.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P12BOW_REC2B_1_2017-BTNM9, sy-vline,
  WA_P12BOW_REC2B_1_2017-BTCNY, sy-vline,
  WA_P12BOW_REC2B_1_2017-BTVOU, sy-vline,
  WA_P12BOW_REC2B_1_2017-BTVSQ, sy-vline,
  WA_P12BOW_REC2B_1_2017-BFPER, sy-vline,
  WA_P12BOW_REC2B_1_2017-BFNRG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P12BOW_REC2B_1_2017 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_P12BOW_REC2B_1_2017 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_P12BOW_REC2B_1_2017 INTO WA_P12BOW_REC2B_1_2017.


*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.

*Conversion exit GJAHR, internal->external for field BTIYR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_P12BOW_REC2B_1_2017-BTIYR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_P12BOW_REC2B_1_2017-BTIYR.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_P12BOW_REC2B_1_2017_STR, 
BTRID TYPE STRING,
BTIYR TYPE STRING,
BTREG TYPE STRING,
BTRET TYPE STRING,
BTADM TYPE STRING,
BTNM9 TYPE STRING,
BTCNY TYPE STRING,
BTVOU TYPE STRING,
BTVSQ TYPE STRING,
BFPER TYPE STRING,
BFNRG TYPE STRING,
BFBIR TYPE STRING,
BFNAM TYPE STRING,
BFSPS TYPE STRING,
BFADR TYPE STRING,
BFPCD TYPE STRING,
BFLOC TYPE STRING,
BFCTY TYPE STRING,
BFMAR TYPE STRING,
BFFAM TYPE STRING,
BFENF TYPE STRING,
BFOCH TYPE STRING,
BFOFS TYPE STRING,
BFSPH TYPE STRING,
F2025 TYPE STRING,
BFHAN TYPE STRING,
BFLAN TYPE STRING,
BFCRC TYPE STRING,
BF325 TYPE STRING,
BFBIP TYPE STRING,
BFFPC TYPE STRING,
VORSW TYPE STRING,
JURST TYPE STRING,
PENFN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P12BOW_REC2B_1_2017_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_P12BOW_REC2B_1_2017_STR-BTRID sy-vline 
WA_P12BOW_REC2B_1_2017_STR-BTIYR sy-vline 
WA_P12BOW_REC2B_1_2017_STR-BTREG sy-vline 
WA_P12BOW_REC2B_1_2017_STR-BTRET sy-vline 
WA_P12BOW_REC2B_1_2017_STR-BTADM sy-vline 
WA_P12BOW_REC2B_1_2017_STR-BTNM9 sy-vline 
WA_P12BOW_REC2B_1_2017_STR-BTCNY sy-vline 
WA_P12BOW_REC2B_1_2017_STR-BTVOU sy-vline 
WA_P12BOW_REC2B_1_2017_STR-BTVSQ sy-vline 
WA_P12BOW_REC2B_1_2017_STR-BFPER sy-vline 
WA_P12BOW_REC2B_1_2017_STR-BFNRG sy-vline 
WA_P12BOW_REC2B_1_2017_STR-BFBIR sy-vline 
WA_P12BOW_REC2B_1_2017_STR-BFNAM sy-vline 
WA_P12BOW_REC2B_1_2017_STR-BFSPS sy-vline 
WA_P12BOW_REC2B_1_2017_STR-BFADR sy-vline 
WA_P12BOW_REC2B_1_2017_STR-BFPCD sy-vline 
WA_P12BOW_REC2B_1_2017_STR-BFLOC sy-vline 
WA_P12BOW_REC2B_1_2017_STR-BFCTY sy-vline 
WA_P12BOW_REC2B_1_2017_STR-BFMAR sy-vline 
WA_P12BOW_REC2B_1_2017_STR-BFFAM sy-vline 
WA_P12BOW_REC2B_1_2017_STR-BFENF sy-vline 
WA_P12BOW_REC2B_1_2017_STR-BFOCH sy-vline 
WA_P12BOW_REC2B_1_2017_STR-BFOFS sy-vline 
WA_P12BOW_REC2B_1_2017_STR-BFSPH sy-vline 
WA_P12BOW_REC2B_1_2017_STR-F2025 sy-vline 
WA_P12BOW_REC2B_1_2017_STR-BFHAN sy-vline 
WA_P12BOW_REC2B_1_2017_STR-BFLAN sy-vline 
WA_P12BOW_REC2B_1_2017_STR-BFCRC sy-vline 
WA_P12BOW_REC2B_1_2017_STR-BF325 sy-vline 
WA_P12BOW_REC2B_1_2017_STR-BFBIP sy-vline 
WA_P12BOW_REC2B_1_2017_STR-BFFPC sy-vline 
WA_P12BOW_REC2B_1_2017_STR-VORSW sy-vline 
WA_P12BOW_REC2B_1_2017_STR-JURST sy-vline 
WA_P12BOW_REC2B_1_2017_STR-PENFN sy-vline      INTO ld_text SEPARATED BY SPACE.

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