ABAP Select data from SAP table PARUNSIMLNDMND into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PARUNSIMLNDMND
*  INTO TABLE @DATA(IT_PARUNSIMLNDMND2).
*--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_PARUNSIMLNDMND INDEX 1 INTO DATA(WA_PARUNSIMLNDMND2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PARUNSIMLNDMND>-MANDT = 1.
<PARUNSIMLNDMND>-ATPCHECKUUID = 1.
<PARUNSIMLNDMND>-REQUIREMENTDOCUMENTNUMBER = 1.
<PARUNSIMLNDMND>-REQUIREMENTDOCUMENTITEM = 1.
<PARUNSIMLNDMND>-REQUIREMENTTYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PARUNSIMLNDMND-REQUESTEDRQMTQTYINBASEUNIT, sy-vline,
  WA_PARUNSIMLNDMND-CONFIRMEDRQMTQTYINBASEUNIT, sy-vline,
  WA_PARUNSIMLNDMND-ASSIGNEDQUANTITYINBASEUNIT, sy-vline,
  WA_PARUNSIMLNDMND-TOTACTUALAMTINDISPLAYCURRENCY, sy-vline,
  WA_PARUNSIMLNDMND-ABOPVARIANTNAME, sy-vline,
  WA_PARUNSIMLNDMND-STARTEDBYUSER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PARUNSIMLNDMND 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_PARUNSIMLNDMND 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_PARUNSIMLNDMND INTO WA_PARUNSIMLNDMND.


*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_PARUNSIMLNDMND_STR, 
MANDT TYPE STRING,
ATPCHECKUUID TYPE STRING,
REQUIREMENTDOCUMENTNUMBER TYPE STRING,
REQUIREMENTDOCUMENTITEM TYPE STRING,
REQUIREMENTTYPE TYPE STRING,
REQUESTEDRQMTQTYINBASEUNIT TYPE STRING,
CONFIRMEDRQMTQTYINBASEUNIT TYPE STRING,
ASSIGNEDQUANTITYINBASEUNIT TYPE STRING,
TOTACTUALAMTINDISPLAYCURRENCY TYPE STRING,
ABOPVARIANTNAME TYPE STRING,
STARTEDBYUSER TYPE STRING,
ATPCHECKSTARTUTCDATETIME TYPE STRING,
ATPCHECKENDUTCDATETIME TYPE STRING,
ATPCHECKSTATUS TYPE STRING,
ABOPEXECUTIONMODE TYPE STRING,
NETPRICEAMOUNT TYPE STRING,
DOCUMENTCURRENCY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PARUNSIMLNDMND_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_PARUNSIMLNDMND_STR-MANDT sy-vline 
WA_PARUNSIMLNDMND_STR-ATPCHECKUUID sy-vline 
WA_PARUNSIMLNDMND_STR-REQUIREMENTDOCUMENTNUMBER sy-vline 
WA_PARUNSIMLNDMND_STR-REQUIREMENTDOCUMENTITEM sy-vline 
WA_PARUNSIMLNDMND_STR-REQUIREMENTTYPE sy-vline 
WA_PARUNSIMLNDMND_STR-REQUESTEDRQMTQTYINBASEUNIT sy-vline 
WA_PARUNSIMLNDMND_STR-CONFIRMEDRQMTQTYINBASEUNIT sy-vline 
WA_PARUNSIMLNDMND_STR-ASSIGNEDQUANTITYINBASEUNIT sy-vline 
WA_PARUNSIMLNDMND_STR-TOTACTUALAMTINDISPLAYCURRENCY sy-vline 
WA_PARUNSIMLNDMND_STR-ABOPVARIANTNAME sy-vline 
WA_PARUNSIMLNDMND_STR-STARTEDBYUSER sy-vline 
WA_PARUNSIMLNDMND_STR-ATPCHECKSTARTUTCDATETIME sy-vline 
WA_PARUNSIMLNDMND_STR-ATPCHECKENDUTCDATETIME sy-vline 
WA_PARUNSIMLNDMND_STR-ATPCHECKSTATUS sy-vline 
WA_PARUNSIMLNDMND_STR-ABOPEXECUTIONMODE sy-vline 
WA_PARUNSIMLNDMND_STR-NETPRICEAMOUNT sy-vline 
WA_PARUNSIMLNDMND_STR-DOCUMENTCURRENCY sy-vline      INTO ld_text SEPARATED BY SPACE.

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