ABAP Select data from SAP table IMPM_CABN into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IMPM_CABN
*  INTO TABLE @DATA(IT_IMPM_CABN2).
*--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_IMPM_CABN INDEX 1 INTO DATA(WA_IMPM_CABN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IMPM_CABN>-MANDT = 1.
<IMPM_CABN>-POINT = 1.
<IMPM_CABN>-PSORT = 1.
<IMPM_CABN>-PTTXT = 1.
<IMPM_CABN>-MPTYP = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IMPM_CABN-IRFMP, sy-vline,
  WA_IMPM_CABN-INACT, sy-vline,
  WA_IMPM_CABN-LVORM, sy-vline,
  WA_IMPM_CABN-LOCAS, sy-vline,
  WA_IMPM_CABN-INDCT, sy-vline,
  WA_IMPM_CABN-CODCT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IMPM_CABN 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_IMPM_CABN 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_IMPM_CABN INTO WA_IMPM_CABN.


*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 POINT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IMPM_CABN-POINT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IMPM_CABN-POINT.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ATINN, internal->external for field ATINN
CALL FUNCTION 'CONVERSION_EXIT_ATINN_OUTPUT'
  EXPORTING
    input =                      WA_IMPM_CABN-ATINN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IMPM_CABN-ATINN.
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_IMPM_CABN_STR, 
MANDT TYPE STRING,
POINT TYPE STRING,
PSORT TYPE STRING,
PTTXT TYPE STRING,
MPTYP TYPE STRING,
IRFMP TYPE STRING,
INACT TYPE STRING,
LVORM TYPE STRING,
LOCAS TYPE STRING,
INDCT TYPE STRING,
CODCT TYPE STRING,
CODGR TYPE STRING,
ATINN TYPE STRING,
ATNAM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IMPM_CABN_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_IMPM_CABN_STR-MANDT sy-vline 
WA_IMPM_CABN_STR-POINT sy-vline 
WA_IMPM_CABN_STR-PSORT sy-vline 
WA_IMPM_CABN_STR-PTTXT sy-vline 
WA_IMPM_CABN_STR-MPTYP sy-vline 
WA_IMPM_CABN_STR-IRFMP sy-vline 
WA_IMPM_CABN_STR-INACT sy-vline 
WA_IMPM_CABN_STR-LVORM sy-vline 
WA_IMPM_CABN_STR-LOCAS sy-vline 
WA_IMPM_CABN_STR-INDCT sy-vline 
WA_IMPM_CABN_STR-CODCT sy-vline 
WA_IMPM_CABN_STR-CODGR sy-vline 
WA_IMPM_CABN_STR-ATINN sy-vline 
WA_IMPM_CABN_STR-ATNAM sy-vline      INTO ld_text SEPARATED BY SPACE.

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