ABAP Select data from SAP table ISCHMLCMPLNCREQTP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ISCHMLCMPLNCREQTP
*  INTO TABLE @DATA(IT_ISCHMLCMPLNCREQTP2).
*--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_ISCHMLCMPLNCREQTP INDEX 1 INTO DATA(WA_ISCHMLCMPLNCREQTP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ISCHMLCMPLNCREQTP>-KEY = 1.
<ISCHMLCMPLNCREQTP>-PARENT_KEY = 1.
<ISCHMLCMPLNCREQTP>-ROOT_KEY = 1.
<ISCHMLCMPLNCREQTP>-CREATIONUTCDATETIME = 1.
<ISCHMLCMPLNCREQTP>-CREATEDBYUSER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ISCHMLCMPLNCREQTP-LASTCHANGEUTCDATETIME, sy-vline,
  WA_ISCHMLCMPLNCREQTP-LASTCHANGEDBYUSER, sy-vline,
  WA_ISCHMLCMPLNCREQTP-CHMLCMPLNCREQUESTDUEDATE, sy-vline,
  WA_ISCHMLCMPLNCREQTP-CHMLCMPLNCREQUESTPRGRSSTATUS, sy-vline,
  WA_ISCHMLCMPLNCREQTP-CHMLCMPLNCREQUESTORIGINTYPE, sy-vline,
  WA_ISCHMLCMPLNCREQTP-CHMLCMPLNCREQORIGINPROC, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ISCHMLCMPLNCREQTP 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_ISCHMLCMPLNCREQTP 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_ISCHMLCMPLNCREQTP INTO WA_ISCHMLCMPLNCREQTP.


*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 MATN1, internal->external for field MATERIAL
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_ISCHMLCMPLNCREQTP-MATERIAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISCHMLCMPLNCREQTP-MATERIAL.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit ALPHA, internal->external for field SUPPLIER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISCHMLCMPLNCREQTP-SUPPLIER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISCHMLCMPLNCREQTP-SUPPLIER.
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_ISCHMLCMPLNCREQTP_STR, 
KEY TYPE STRING,
PARENT_KEY TYPE STRING,
ROOT_KEY TYPE STRING,
CREATIONUTCDATETIME TYPE STRING,
CREATEDBYUSER TYPE STRING,
LASTCHANGEUTCDATETIME TYPE STRING,
LASTCHANGEDBYUSER TYPE STRING,
CHMLCMPLNCREQUESTDUEDATE TYPE STRING,
CHMLCMPLNCREQUESTPRGRSSTATUS TYPE STRING,
CHMLCMPLNCREQUESTORIGINTYPE TYPE STRING,
CHMLCMPLNCREQORIGINPROC TYPE STRING,
CHMLCMPLNCINFOUUID TYPE STRING,
CHMLCMPLNCPRODUUID TYPE STRING,
MATERIAL TYPE STRING,
SALESDOCUMENT TYPE STRING,
SALESDOCUMENTITEM TYPE STRING,
CHMLCMPLNCREQLOGISTICDOCCAT TYPE STRING,
CHMLCMPLNCREQUESTREMARK TYPE STRING,
CHMLCMPLNCREQREQUESTER TYPE STRING,
CHMLCMPLNCREQBPREQUESTER TYPE STRING,
CHMLCMPLNCREQBPPROCESSOR TYPE STRING,
CHMLCMPLNCBUSINESSPROCESS TYPE STRING,
CHMLCMPLNCREQCMPLNCPROC TYPE STRING,
CHMLCMPLNCREQDETAILS TYPE STRING,
PRODCMPLNCLOGSDOCUMENT TYPE STRING,
PRODCMPLNCLOGSDOCUMENTITEM TYPE STRING,
BUSINESSSYSTEMNAME TYPE STRING,
DNGRSGOODSMODEOFTRANSPORT TYPE STRING,
SUPPLIER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ISCHMLCMPLNCREQTP_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_ISCHMLCMPLNCREQTP_STR-KEY sy-vline 
WA_ISCHMLCMPLNCREQTP_STR-PARENT_KEY sy-vline 
WA_ISCHMLCMPLNCREQTP_STR-ROOT_KEY sy-vline 
WA_ISCHMLCMPLNCREQTP_STR-CREATIONUTCDATETIME sy-vline 
WA_ISCHMLCMPLNCREQTP_STR-CREATEDBYUSER sy-vline 
WA_ISCHMLCMPLNCREQTP_STR-LASTCHANGEUTCDATETIME sy-vline 
WA_ISCHMLCMPLNCREQTP_STR-LASTCHANGEDBYUSER sy-vline 
WA_ISCHMLCMPLNCREQTP_STR-CHMLCMPLNCREQUESTDUEDATE sy-vline 
WA_ISCHMLCMPLNCREQTP_STR-CHMLCMPLNCREQUESTPRGRSSTATUS sy-vline 
WA_ISCHMLCMPLNCREQTP_STR-CHMLCMPLNCREQUESTORIGINTYPE sy-vline 
WA_ISCHMLCMPLNCREQTP_STR-CHMLCMPLNCREQORIGINPROC sy-vline 
WA_ISCHMLCMPLNCREQTP_STR-CHMLCMPLNCINFOUUID sy-vline 
WA_ISCHMLCMPLNCREQTP_STR-CHMLCMPLNCPRODUUID sy-vline 
WA_ISCHMLCMPLNCREQTP_STR-MATERIAL sy-vline 
WA_ISCHMLCMPLNCREQTP_STR-SALESDOCUMENT sy-vline 
WA_ISCHMLCMPLNCREQTP_STR-SALESDOCUMENTITEM sy-vline 
WA_ISCHMLCMPLNCREQTP_STR-CHMLCMPLNCREQLOGISTICDOCCAT sy-vline 
WA_ISCHMLCMPLNCREQTP_STR-CHMLCMPLNCREQUESTREMARK sy-vline 
WA_ISCHMLCMPLNCREQTP_STR-CHMLCMPLNCREQREQUESTER sy-vline 
WA_ISCHMLCMPLNCREQTP_STR-CHMLCMPLNCREQBPREQUESTER sy-vline 
WA_ISCHMLCMPLNCREQTP_STR-CHMLCMPLNCREQBPPROCESSOR sy-vline 
WA_ISCHMLCMPLNCREQTP_STR-CHMLCMPLNCBUSINESSPROCESS sy-vline 
WA_ISCHMLCMPLNCREQTP_STR-CHMLCMPLNCREQCMPLNCPROC sy-vline 
WA_ISCHMLCMPLNCREQTP_STR-CHMLCMPLNCREQDETAILS sy-vline 
WA_ISCHMLCMPLNCREQTP_STR-PRODCMPLNCLOGSDOCUMENT sy-vline 
WA_ISCHMLCMPLNCREQTP_STR-PRODCMPLNCLOGSDOCUMENTITEM sy-vline 
WA_ISCHMLCMPLNCREQTP_STR-BUSINESSSYSTEMNAME sy-vline 
WA_ISCHMLCMPLNCREQTP_STR-DNGRSGOODSMODEOFTRANSPORT sy-vline 
WA_ISCHMLCMPLNCREQTP_STR-SUPPLIER sy-vline      INTO ld_text SEPARATED BY SPACE.

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