ABAP Select data from SAP table CRMM_BUT_MIGRATE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CRMM_BUT_MIGRATE
*  INTO TABLE @DATA(IT_CRMM_BUT_MIGRATE2).
*--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_CRMM_BUT_MIGRATE INDEX 1 INTO DATA(WA_CRMM_BUT_MIGRATE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CRMM_BUT_MIGRATE>-CLIENT = 1.
<CRMM_BUT_MIGRATE>-PARTNER_GUID = 1.
<CRMM_BUT_MIGRATE>-KUNNR = 1.
<CRMM_BUT_MIGRATE>-KTOKD = 1.
<CRMM_BUT_MIGRATE>-NIELS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CRMM_BUT_MIGRATE-KUKLA, sy-vline,
  WA_CRMM_BUT_MIGRATE-KATR1, sy-vline,
  WA_CRMM_BUT_MIGRATE-KATR2, sy-vline,
  WA_CRMM_BUT_MIGRATE-KATR3, sy-vline,
  WA_CRMM_BUT_MIGRATE-KATR4, sy-vline,
  WA_CRMM_BUT_MIGRATE-KATR5, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CRMM_BUT_MIGRATE 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_CRMM_BUT_MIGRATE 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_CRMM_BUT_MIGRATE INTO WA_CRMM_BUT_MIGRATE.


*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_CRMM_BUT_MIGRATE_STR, 
CLIENT TYPE STRING,
PARTNER_GUID TYPE STRING,
KUNNR TYPE STRING,
KTOKD TYPE STRING,
NIELS TYPE STRING,
KUKLA TYPE STRING,
KATR1 TYPE STRING,
KATR2 TYPE STRING,
KATR3 TYPE STRING,
KATR4 TYPE STRING,
KATR5 TYPE STRING,
KATR6 TYPE STRING,
KATR7 TYPE STRING,
KATR8 TYPE STRING,
KATR9 TYPE STRING,
KATR10 TYPE STRING,
VKBUR TYPE STRING,
VKGRP TYPE STRING,
BZIRK TYPE STRING,
XBLCK TYPE STRING,
CONTACT TYPE STRING,
NOT_RELEASED TYPE STRING,
NOTES TYPE STRING,
VISIT_HOURS TYPE STRING,
KZTLF TYPE STRING,
KTGRD TYPE STRING,
BOKRE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CRMM_BUT_MIGRATE_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_CRMM_BUT_MIGRATE_STR-CLIENT sy-vline 
WA_CRMM_BUT_MIGRATE_STR-PARTNER_GUID sy-vline 
WA_CRMM_BUT_MIGRATE_STR-KUNNR sy-vline 
WA_CRMM_BUT_MIGRATE_STR-KTOKD sy-vline 
WA_CRMM_BUT_MIGRATE_STR-NIELS sy-vline 
WA_CRMM_BUT_MIGRATE_STR-KUKLA sy-vline 
WA_CRMM_BUT_MIGRATE_STR-KATR1 sy-vline 
WA_CRMM_BUT_MIGRATE_STR-KATR2 sy-vline 
WA_CRMM_BUT_MIGRATE_STR-KATR3 sy-vline 
WA_CRMM_BUT_MIGRATE_STR-KATR4 sy-vline 
WA_CRMM_BUT_MIGRATE_STR-KATR5 sy-vline 
WA_CRMM_BUT_MIGRATE_STR-KATR6 sy-vline 
WA_CRMM_BUT_MIGRATE_STR-KATR7 sy-vline 
WA_CRMM_BUT_MIGRATE_STR-KATR8 sy-vline 
WA_CRMM_BUT_MIGRATE_STR-KATR9 sy-vline 
WA_CRMM_BUT_MIGRATE_STR-KATR10 sy-vline 
WA_CRMM_BUT_MIGRATE_STR-VKBUR sy-vline 
WA_CRMM_BUT_MIGRATE_STR-VKGRP sy-vline 
WA_CRMM_BUT_MIGRATE_STR-BZIRK sy-vline 
WA_CRMM_BUT_MIGRATE_STR-XBLCK sy-vline 
WA_CRMM_BUT_MIGRATE_STR-CONTACT sy-vline 
WA_CRMM_BUT_MIGRATE_STR-NOT_RELEASED sy-vline 
WA_CRMM_BUT_MIGRATE_STR-NOTES sy-vline 
WA_CRMM_BUT_MIGRATE_STR-VISIT_HOURS sy-vline 
WA_CRMM_BUT_MIGRATE_STR-KZTLF sy-vline 
WA_CRMM_BUT_MIGRATE_STR-KTGRD sy-vline 
WA_CRMM_BUT_MIGRATE_STR-BOKRE sy-vline      INTO ld_text SEPARATED BY SPACE.

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