ABAP Select data from SAP table IDCFMHU_ASLOG into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IDCFMHU_ASLOG
*  INTO TABLE @DATA(IT_IDCFMHU_ASLOG2).
*--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_IDCFMHU_ASLOG INDEX 1 INTO DATA(WA_IDCFMHU_ASLOG2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IDCFMHU_ASLOG>-MANDT = 1.
<IDCFMHU_ASLOG>-BUKRS = 1.
<IDCFMHU_ASLOG>-RANL = 1.
<IDCFMHU_ASLOG>-RFHA = 1.
<IDCFMHU_ASLOG>-ID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IDCFMHU_ASLOG-HATARNAP, sy-vline,
  WA_IDCFMHU_ASLOG-SORSZAM, sy-vline,
  WA_IDCFMHU_ASLOG-FUTAS_SZAM, sy-vline,
  WA_IDCFMHU_ASLOG-SIGN, sy-vline,
  WA_IDCFMHU_ASLOG-SIGN_FINAL, sy-vline,
  WA_IDCFMHU_ASLOG-AMOVALUE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IDCFMHU_ASLOG 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_IDCFMHU_ASLOG 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_IDCFMHU_ASLOG INTO WA_IDCFMHU_ASLOG.


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

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

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

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

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

*Conversion exit ALPHA, internal->external for field SAKNR_KL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IDCFMHU_ASLOG-SAKNR_KL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDCFMHU_ASLOG-SAKNR_KL.
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_IDCFMHU_ASLOG_STR, 
MANDT TYPE STRING,
BUKRS TYPE STRING,
RANL TYPE STRING,
RFHA TYPE STRING,
ID TYPE STRING,
HATARNAP TYPE STRING,
SORSZAM TYPE STRING,
FUTAS_SZAM TYPE STRING,
SIGN TYPE STRING,
SIGN_FINAL TYPE STRING,
AMOVALUE TYPE STRING,
AMOACT TYPE STRING,
AMOLACT TYPE STRING,
BNWHR TYPE STRING,
STKZG TYPE STRING,
DATUM TYPE STRING,
UZEIT TYPE STRING,
UNAME TYPE STRING,
WAERS TYPE STRING,
RREFKONT TYPE STRING,
SAKNR_T TYPE STRING,
SAKNR_K TYPE STRING,
SAKNR_TL TYPE STRING,
SAKNR_KL TYPE STRING,
BOOK_ID TYPE STRING,
BOOK_ID_LEJARAT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IDCFMHU_ASLOG_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_IDCFMHU_ASLOG_STR-MANDT sy-vline 
WA_IDCFMHU_ASLOG_STR-BUKRS sy-vline 
WA_IDCFMHU_ASLOG_STR-RANL sy-vline 
WA_IDCFMHU_ASLOG_STR-RFHA sy-vline 
WA_IDCFMHU_ASLOG_STR-ID sy-vline 
WA_IDCFMHU_ASLOG_STR-HATARNAP sy-vline 
WA_IDCFMHU_ASLOG_STR-SORSZAM sy-vline 
WA_IDCFMHU_ASLOG_STR-FUTAS_SZAM sy-vline 
WA_IDCFMHU_ASLOG_STR-SIGN sy-vline 
WA_IDCFMHU_ASLOG_STR-SIGN_FINAL sy-vline 
WA_IDCFMHU_ASLOG_STR-AMOVALUE sy-vline 
WA_IDCFMHU_ASLOG_STR-AMOACT sy-vline 
WA_IDCFMHU_ASLOG_STR-AMOLACT sy-vline 
WA_IDCFMHU_ASLOG_STR-BNWHR sy-vline 
WA_IDCFMHU_ASLOG_STR-STKZG sy-vline 
WA_IDCFMHU_ASLOG_STR-DATUM sy-vline 
WA_IDCFMHU_ASLOG_STR-UZEIT sy-vline 
WA_IDCFMHU_ASLOG_STR-UNAME sy-vline 
WA_IDCFMHU_ASLOG_STR-WAERS sy-vline 
WA_IDCFMHU_ASLOG_STR-RREFKONT sy-vline 
WA_IDCFMHU_ASLOG_STR-SAKNR_T sy-vline 
WA_IDCFMHU_ASLOG_STR-SAKNR_K sy-vline 
WA_IDCFMHU_ASLOG_STR-SAKNR_TL sy-vline 
WA_IDCFMHU_ASLOG_STR-SAKNR_KL sy-vline 
WA_IDCFMHU_ASLOG_STR-BOOK_ID sy-vline 
WA_IDCFMHU_ASLOG_STR-BOOK_ID_LEJARAT sy-vline      INTO ld_text SEPARATED BY SPACE.

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