ABAP Select data from SAP table MDS_PPOS_ORDER_HDR_DYN into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MDS_PPOS_ORDER_HDR_DYN
*  INTO TABLE @DATA(IT_MDS_PPOS_ORDER_HDR_DYN2).
*--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_MDS_PPOS_ORDER_HDR_DYN INDEX 1 INTO DATA(WA_MDS_PPOS_ORDER_HDR_DYN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MDS_PPOS_ORDER_HDR_DYN>-COMPONENT = 1.
<MDS_PPOS_ORDER_HDR_DYN>-BUSINESS_PROCESS = 1.
<MDS_PPOS_ORDER_HDR_DYN>-BUSINESS_PROCESS_ID = 1.
<MDS_PPOS_ORDER_HDR_DYN>-ORDER_ID = 1.
<MDS_PPOS_ORDER_HDR_DYN>-LOGSYS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MDS_PPOS_ORDER_HDR_DYN-USER_CREATE, sy-vline,
  WA_MDS_PPOS_ORDER_HDR_DYN-TIMESTAMP_CREATE, sy-vline,
  WA_MDS_PPOS_ORDER_HDR_DYN-USER_CHANGE, sy-vline,
  WA_MDS_PPOS_ORDER_HDR_DYN-TIMESTAMP_CHANGE, sy-vline,
  WA_MDS_PPOS_ORDER_HDR_DYN-WORKLIST, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_MDS_PPOS_ORDER_HDR_DYN 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_MDS_PPOS_ORDER_HDR_DYN 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_MDS_PPOS_ORDER_HDR_DYN INTO WA_MDS_PPOS_ORDER_HDR_DYN.


*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 ALPHA, internal->external for field LOGSYS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MDS_PPOS_ORDER_HDR_DYN-LOGSYS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MDS_PPOS_ORDER_HDR_DYN-LOGSYS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTLC, internal->external for field TIMESTAMP_CREATE
CALL FUNCTION 'CONVERSION_EXIT_TSTLC_OUTPUT'
  EXPORTING
    input =                      WA_MDS_PPOS_ORDER_HDR_DYN-TIMESTAMP_CREATE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MDS_PPOS_ORDER_HDR_DYN-TIMESTAMP_CREATE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTLC, internal->external for field TIMESTAMP_CHANGE
CALL FUNCTION 'CONVERSION_EXIT_TSTLC_OUTPUT'
  EXPORTING
    input =                      WA_MDS_PPOS_ORDER_HDR_DYN-TIMESTAMP_CHANGE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MDS_PPOS_ORDER_HDR_DYN-TIMESTAMP_CHANGE.
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_MDS_PPOS_ORDER_HDR_DYN_STR, 
COMPONENT TYPE STRING,
BUSINESS_PROCESS TYPE STRING,
BUSINESS_PROCESS_ID TYPE STRING,
ORDER_ID TYPE STRING,
LOGSYS TYPE STRING,
USER_CREATE TYPE STRING,
TIMESTAMP_CREATE TYPE STRING,
USER_CHANGE TYPE STRING,
TIMESTAMP_CHANGE TYPE STRING,
WORKLIST TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MDS_PPOS_ORDER_HDR_DYN_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_MDS_PPOS_ORDER_HDR_DYN_STR-COMPONENT sy-vline 
WA_MDS_PPOS_ORDER_HDR_DYN_STR-BUSINESS_PROCESS sy-vline 
WA_MDS_PPOS_ORDER_HDR_DYN_STR-BUSINESS_PROCESS_ID sy-vline 
WA_MDS_PPOS_ORDER_HDR_DYN_STR-ORDER_ID sy-vline 
WA_MDS_PPOS_ORDER_HDR_DYN_STR-LOGSYS sy-vline 
WA_MDS_PPOS_ORDER_HDR_DYN_STR-USER_CREATE sy-vline 
WA_MDS_PPOS_ORDER_HDR_DYN_STR-TIMESTAMP_CREATE sy-vline 
WA_MDS_PPOS_ORDER_HDR_DYN_STR-USER_CHANGE sy-vline 
WA_MDS_PPOS_ORDER_HDR_DYN_STR-TIMESTAMP_CHANGE sy-vline 
WA_MDS_PPOS_ORDER_HDR_DYN_STR-WORKLIST sy-vline      INTO ld_text SEPARATED BY SPACE.

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