ABAP Select data from SAP table ISMDCHGPROCESSSTEPTP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ISMDCHGPROCESSSTEPTP
*  INTO TABLE @DATA(IT_ISMDCHGPROCESSSTEPTP2).
*--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_ISMDCHGPROCESSSTEPTP INDEX 1 INTO DATA(WA_ISMDCHGPROCESSSTEPTP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ISMDCHGPROCESSSTEPTP>-KEY = 1.
<ISMDCHGPROCESSSTEPTP>-PARENT_KEY = 1.
<ISMDCHGPROCESSSTEPTP>-ROOT_KEY = 1.
<ISMDCHGPROCESSSTEPTP>-MASTERDATACHANGEPROCESS = 1.
<ISMDCHGPROCESSSTEPTP>-MDCHGPROCESSSTEP = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ISMDCHGPROCESSSTEPTP-MDCHGPROCESSSTEPTYPE, sy-vline,
  WA_ISMDCHGPROCESSSTEPTP-MDCHGPROCESSSTEPDESCRIPTION, sy-vline,
  WA_ISMDCHGPROCESSSTEPTP-MDCHGPROCESSSTEPSTATUS, sy-vline,
  WA_ISMDCHGPROCESSSTEPTP-MDCHGPROCESSSTEPADAPTER, sy-vline,
  WA_ISMDCHGPROCESSSTEPTP-MDCHGPROCESSSTEPADAPTERCONFIGN, sy-vline,
  WA_ISMDCHGPROCESSSTEPTP-MDCHGPROCESSSTEPCHKPOINTISACTV, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ISMDCHGPROCESSSTEPTP 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_ISMDCHGPROCESSSTEPTP 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_ISMDCHGPROCESSSTEPTP INTO WA_ISMDCHGPROCESSSTEPTP.


*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_ISMDCHGPROCESSSTEPTP_STR, 
KEY TYPE STRING,
PARENT_KEY TYPE STRING,
ROOT_KEY TYPE STRING,
MASTERDATACHANGEPROCESS TYPE STRING,
MDCHGPROCESSSTEP TYPE STRING,
MDCHGPROCESSSTEPTYPE TYPE STRING,
MDCHGPROCESSSTEPDESCRIPTION TYPE STRING,
MDCHGPROCESSSTEPSTATUS TYPE STRING,
MDCHGPROCESSSTEPADAPTER TYPE STRING,
MDCHGPROCESSSTEPADAPTERCONFIGN TYPE STRING,
MDCHGPROCESSSTEPCHKPOINTISACTV TYPE STRING,
MDCHGPROCESSSTEPORIGLNUMBER TYPE STRING,
MDCHGPROCESSSTEPORIGLSQNCNMBR TYPE STRING,
MDCHGPROCESSSTEPSTARTISREQD TYPE STRING,
MDCHGPROCESSSRCEOBJECTTYPECODE TYPE STRING,
MDCHGPROCESSSTEPFILTERCHAIN TYPE STRING,
MDCHGPROCESSSTEPSTARTDATETIME TYPE STRING,
MDCHGPROCESSSTEPFINISHDATETIME TYPE STRING,
MDCHGPROCESSSTEPCONFIGN TYPE STRING,
MDCHGPROCESSSTPOWNCONFIGNISRQD TYPE STRING,
MDCHGPROCISADHOCSTEP TYPE STRING,
MDCHGPROCESSSTEPACTIONCONTROL TYPE STRING,
MDCHGPROCESSSTEPAUTHZNGROUP TYPE STRING,
MDCHGPROCSTEPISROLLBACKALLOWED TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ISMDCHGPROCESSSTEPTP_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_ISMDCHGPROCESSSTEPTP_STR-KEY sy-vline 
WA_ISMDCHGPROCESSSTEPTP_STR-PARENT_KEY sy-vline 
WA_ISMDCHGPROCESSSTEPTP_STR-ROOT_KEY sy-vline 
WA_ISMDCHGPROCESSSTEPTP_STR-MASTERDATACHANGEPROCESS sy-vline 
WA_ISMDCHGPROCESSSTEPTP_STR-MDCHGPROCESSSTEP sy-vline 
WA_ISMDCHGPROCESSSTEPTP_STR-MDCHGPROCESSSTEPTYPE sy-vline 
WA_ISMDCHGPROCESSSTEPTP_STR-MDCHGPROCESSSTEPDESCRIPTION sy-vline 
WA_ISMDCHGPROCESSSTEPTP_STR-MDCHGPROCESSSTEPSTATUS sy-vline 
WA_ISMDCHGPROCESSSTEPTP_STR-MDCHGPROCESSSTEPADAPTER sy-vline 
WA_ISMDCHGPROCESSSTEPTP_STR-MDCHGPROCESSSTEPADAPTERCONFIGN sy-vline 
WA_ISMDCHGPROCESSSTEPTP_STR-MDCHGPROCESSSTEPCHKPOINTISACTV sy-vline 
WA_ISMDCHGPROCESSSTEPTP_STR-MDCHGPROCESSSTEPORIGLNUMBER sy-vline 
WA_ISMDCHGPROCESSSTEPTP_STR-MDCHGPROCESSSTEPORIGLSQNCNMBR sy-vline 
WA_ISMDCHGPROCESSSTEPTP_STR-MDCHGPROCESSSTEPSTARTISREQD sy-vline 
WA_ISMDCHGPROCESSSTEPTP_STR-MDCHGPROCESSSRCEOBJECTTYPECODE sy-vline 
WA_ISMDCHGPROCESSSTEPTP_STR-MDCHGPROCESSSTEPFILTERCHAIN sy-vline 
WA_ISMDCHGPROCESSSTEPTP_STR-MDCHGPROCESSSTEPSTARTDATETIME sy-vline 
WA_ISMDCHGPROCESSSTEPTP_STR-MDCHGPROCESSSTEPFINISHDATETIME sy-vline 
WA_ISMDCHGPROCESSSTEPTP_STR-MDCHGPROCESSSTEPCONFIGN sy-vline 
WA_ISMDCHGPROCESSSTEPTP_STR-MDCHGPROCESSSTPOWNCONFIGNISRQD sy-vline 
WA_ISMDCHGPROCESSSTEPTP_STR-MDCHGPROCISADHOCSTEP sy-vline 
WA_ISMDCHGPROCESSSTEPTP_STR-MDCHGPROCESSSTEPACTIONCONTROL sy-vline 
WA_ISMDCHGPROCESSSTEPTP_STR-MDCHGPROCESSSTEPAUTHZNGROUP sy-vline 
WA_ISMDCHGPROCESSSTEPTP_STR-MDCHGPROCSTEPISROLLBACKALLOWED sy-vline      INTO ld_text SEPARATED BY SPACE.

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