ABAP Select data from SAP table P21_T5H84 into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

Below is a number of ABAP code snippets to demonstrate how to select data from SAP P21_T5H84 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 P21_T5H84. 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 P21_T5H84 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_P21_T5H84 TYPE STANDARD TABLE OF P21_T5H84,
      WA_P21_T5H84 TYPE P21_T5H84,
      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: <P21_T5H84> TYPE P21_T5H84.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P21_T5H84.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P21_T5H84
  INTO TABLE IT_P21_T5H84.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P21_T5H84
*  INTO TABLE @DATA(IT_P21_T5H842).
*--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_P21_T5H84 INDEX 1 INTO DATA(WA_P21_T5H842).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P21_T5H84 ASSIGNING <P21_T5H84>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P21_T5H84>-MANDT = 1.
<P21_T5H84>-PERNR = 1.
<P21_T5H84>-CNAME = 1.
<P21_T5H84>-IAPER = 1.
<P21_T5H84>-PAPER = 1.

ENDLOOP.

LOOP AT IT_P21_T5H84 INTO WA_P21_T5H84.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P21_T5H84-PAYTY, sy-vline,
  WA_P21_T5H84-PAYID, sy-vline,
  WA_P21_T5H84-OCRSN, sy-vline,
  WA_P21_T5H84-BONDT, sy-vline,
  WA_P21_T5H84-SORSZ, sy-vline,
  WA_P21_T5H84-MSGTY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P21_T5H84 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_P21_T5H84 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_P21_T5H84 INTO WA_P21_T5H84.


*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_P21_T5H84_STR, 
MANDT TYPE STRING,
PERNR TYPE STRING,
CNAME TYPE STRING,
IAPER TYPE STRING,
PAPER TYPE STRING,
PAYTY TYPE STRING,
PAYID TYPE STRING,
OCRSN TYPE STRING,
BONDT TYPE STRING,
SORSZ TYPE STRING,
MSGTY TYPE STRING,
MSGID TYPE STRING,
MSGNUM TYPE STRING,
MSG TYPE STRING,
ORGEH TYPE STRING,
ORGTXT TYPE STRING,
WERKS TYPE STRING,
PBTXT TYPE STRING,
PERSG TYPE STRING,
PTEXT TYPE STRING,
PERSK TYPE STRING,
PERSK_TXT TYPE STRING,
ABKRS TYPE STRING,
ATEXT TYPE STRING,
UNAME TYPE STRING,
AEDTM TYPE STRING,
TIME TYPE STRING,
TESZT TYPE STRING,
SBMOD TYPE STRING,
SACHP TYPE STRING,
SACHP_TXT TYPE STRING,
SACHZ TYPE STRING,
SACHZ_TXT TYPE STRING,
SACHA TYPE STRING,
SACHA_TXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P21_T5H84_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_P21_T5H84_STR-MANDT sy-vline 
WA_P21_T5H84_STR-PERNR sy-vline 
WA_P21_T5H84_STR-CNAME sy-vline 
WA_P21_T5H84_STR-IAPER sy-vline 
WA_P21_T5H84_STR-PAPER sy-vline 
WA_P21_T5H84_STR-PAYTY sy-vline 
WA_P21_T5H84_STR-PAYID sy-vline 
WA_P21_T5H84_STR-OCRSN sy-vline 
WA_P21_T5H84_STR-BONDT sy-vline 
WA_P21_T5H84_STR-SORSZ sy-vline 
WA_P21_T5H84_STR-MSGTY sy-vline 
WA_P21_T5H84_STR-MSGID sy-vline 
WA_P21_T5H84_STR-MSGNUM sy-vline 
WA_P21_T5H84_STR-MSG sy-vline 
WA_P21_T5H84_STR-ORGEH sy-vline 
WA_P21_T5H84_STR-ORGTXT sy-vline 
WA_P21_T5H84_STR-WERKS sy-vline 
WA_P21_T5H84_STR-PBTXT sy-vline 
WA_P21_T5H84_STR-PERSG sy-vline 
WA_P21_T5H84_STR-PTEXT sy-vline 
WA_P21_T5H84_STR-PERSK sy-vline 
WA_P21_T5H84_STR-PERSK_TXT sy-vline 
WA_P21_T5H84_STR-ABKRS sy-vline 
WA_P21_T5H84_STR-ATEXT sy-vline 
WA_P21_T5H84_STR-UNAME sy-vline 
WA_P21_T5H84_STR-AEDTM sy-vline 
WA_P21_T5H84_STR-TIME sy-vline 
WA_P21_T5H84_STR-TESZT sy-vline 
WA_P21_T5H84_STR-SBMOD sy-vline 
WA_P21_T5H84_STR-SACHP sy-vline 
WA_P21_T5H84_STR-SACHP_TXT sy-vline 
WA_P21_T5H84_STR-SACHZ sy-vline 
WA_P21_T5H84_STR-SACHZ_TXT sy-vline 
WA_P21_T5H84_STR-SACHA sy-vline 
WA_P21_T5H84_STR-SACHA_TXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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