ABAP Select data from SAP table ISCHMLCMPLNCMKTREQTP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ISCHMLCMPLNCMKTREQTP
*  INTO TABLE @DATA(IT_ISCHMLCMPLNCMKTREQTP2).
*--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_ISCHMLCMPLNCMKTREQTP INDEX 1 INTO DATA(WA_ISCHMLCMPLNCMKTREQTP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ISCHMLCMPLNCMKTREQTP>-KEY = 1.
<ISCHMLCMPLNCMKTREQTP>-PARENT_KEY = 1.
<ISCHMLCMPLNCMKTREQTP>-ROOT_KEY = 1.
<ISCHMLCMPLNCMKTREQTP>-ACTIVECHMLCMPLNCMKTREQUUID = 1.
<ISCHMLCMPLNCMKTREQTP>-ACTIVECHMLCMPLNCINFOUUID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ISCHMLCMPLNCMKTREQTP-CREATIONUTCDATETIME, sy-vline,
  WA_ISCHMLCMPLNCMKTREQTP-CREATEDBYUSER, sy-vline,
  WA_ISCHMLCMPLNCMKTREQTP-LASTCHANGEUTCDATETIME, sy-vline,
  WA_ISCHMLCMPLNCMKTREQTP-LASTCHANGEDBYUSER, sy-vline,
  WA_ISCHMLCMPLNCMKTREQTP-COUNTRY, sy-vline,
  WA_ISCHMLCMPLNCMKTREQTP-CHMLCMPLNCPRODNISREQD, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ISCHMLCMPLNCMKTREQTP 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_ISCHMLCMPLNCMKTREQTP 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_ISCHMLCMPLNCMKTREQTP INTO WA_ISCHMLCMPLNCMKTREQTP.


*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_ISCHMLCMPLNCMKTREQTP_STR, 
KEY TYPE STRING,
PARENT_KEY TYPE STRING,
ROOT_KEY TYPE STRING,
ACTIVECHMLCMPLNCMKTREQUUID TYPE STRING,
ACTIVECHMLCMPLNCINFOUUID TYPE STRING,
CREATIONUTCDATETIME TYPE STRING,
CREATEDBYUSER TYPE STRING,
LASTCHANGEUTCDATETIME TYPE STRING,
LASTCHANGEDBYUSER TYPE STRING,
COUNTRY TYPE STRING,
CHMLCMPLNCPRODNISREQD TYPE STRING,
CHMLCMPLNCEXPRTISREQD TYPE STRING,
CHMLCMPLNCIMPRTISREQD TYPE STRING,
CHMLCMPLNCSALESISREQD TYPE STRING,
ACTIVEUUID TYPE STRING,
HASACTIVEENTITY TYPE STRING,
DRAFTENTITYCREATIONDATETIME TYPE STRING,
DRAFTENTITYLASTCHANGEDATETIME TYPE STRING,
DRAFTADMINISTRATIVEDATAUUID TYPE STRING,
DRAFTENTITYCONSISTENCYSTATUS TYPE STRING,
DRAFTENTITYOPERATIONCODE TYPE STRING,
ISACTIVEENTITY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ISCHMLCMPLNCMKTREQTP_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_ISCHMLCMPLNCMKTREQTP_STR-KEY sy-vline 
WA_ISCHMLCMPLNCMKTREQTP_STR-PARENT_KEY sy-vline 
WA_ISCHMLCMPLNCMKTREQTP_STR-ROOT_KEY sy-vline 
WA_ISCHMLCMPLNCMKTREQTP_STR-ACTIVECHMLCMPLNCMKTREQUUID sy-vline 
WA_ISCHMLCMPLNCMKTREQTP_STR-ACTIVECHMLCMPLNCINFOUUID sy-vline 
WA_ISCHMLCMPLNCMKTREQTP_STR-CREATIONUTCDATETIME sy-vline 
WA_ISCHMLCMPLNCMKTREQTP_STR-CREATEDBYUSER sy-vline 
WA_ISCHMLCMPLNCMKTREQTP_STR-LASTCHANGEUTCDATETIME sy-vline 
WA_ISCHMLCMPLNCMKTREQTP_STR-LASTCHANGEDBYUSER sy-vline 
WA_ISCHMLCMPLNCMKTREQTP_STR-COUNTRY sy-vline 
WA_ISCHMLCMPLNCMKTREQTP_STR-CHMLCMPLNCPRODNISREQD sy-vline 
WA_ISCHMLCMPLNCMKTREQTP_STR-CHMLCMPLNCEXPRTISREQD sy-vline 
WA_ISCHMLCMPLNCMKTREQTP_STR-CHMLCMPLNCIMPRTISREQD sy-vline 
WA_ISCHMLCMPLNCMKTREQTP_STR-CHMLCMPLNCSALESISREQD sy-vline 
WA_ISCHMLCMPLNCMKTREQTP_STR-ACTIVEUUID sy-vline 
WA_ISCHMLCMPLNCMKTREQTP_STR-HASACTIVEENTITY sy-vline 
WA_ISCHMLCMPLNCMKTREQTP_STR-DRAFTENTITYCREATIONDATETIME sy-vline 
WA_ISCHMLCMPLNCMKTREQTP_STR-DRAFTENTITYLASTCHANGEDATETIME sy-vline 
WA_ISCHMLCMPLNCMKTREQTP_STR-DRAFTADMINISTRATIVEDATAUUID sy-vline 
WA_ISCHMLCMPLNCMKTREQTP_STR-DRAFTENTITYCONSISTENCYSTATUS sy-vline 
WA_ISCHMLCMPLNCMKTREQTP_STR-DRAFTENTITYOPERATIONCODE sy-vline 
WA_ISCHMLCMPLNCMKTREQTP_STR-ISACTIVEENTITY sy-vline      INTO ld_text SEPARATED BY SPACE.

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