ABAP Select data from SAP table ICACREDITWMANG into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ICACREDITWMANG
*  INTO TABLE @DATA(IT_ICACREDITWMANG2).
*--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_ICACREDITWMANG INDEX 1 INTO DATA(WA_ICACREDITWMANG2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ICACREDITWMANG>-MANDT = 1.
<ICACREDITWMANG>-BUSINESSPARTNER = 1.
<ICACREDITWMANG>-CALENDARYEAR = 1.
<ICACREDITWMANG>-CACREDITWORTHINESSJANUARYVALUE = 1.
<ICACREDITWMANG>-CACREDITWORTHINESSFEBRUARYVAL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ICACREDITWMANG-CACREDITWORTHINESSMARCHVALUE, sy-vline,
  WA_ICACREDITWMANG-CACREDITWORTHINESSAPRILVALUE, sy-vline,
  WA_ICACREDITWMANG-CACREDITWORTHINESSMAYVALUE, sy-vline,
  WA_ICACREDITWMANG-CACREDITWORTHINESSJUNEVALUE, sy-vline,
  WA_ICACREDITWMANG-CACREDITWORTHINESSJULYVALUE, sy-vline,
  WA_ICACREDITWMANG-CACREDITWORTHINESSAUGUSTVALUE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ICACREDITWMANG 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_ICACREDITWMANG 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_ICACREDITWMANG INTO WA_ICACREDITWMANG.


*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 BUSINESSPARTNER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ICACREDITWMANG-BUSINESSPARTNER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICACREDITWMANG-BUSINESSPARTNER.
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_ICACREDITWMANG_STR, 
MANDT TYPE STRING,
BUSINESSPARTNER TYPE STRING,
CALENDARYEAR TYPE STRING,
CACREDITWORTHINESSJANUARYVALUE TYPE STRING,
CACREDITWORTHINESSFEBRUARYVAL TYPE STRING,
CACREDITWORTHINESSMARCHVALUE TYPE STRING,
CACREDITWORTHINESSAPRILVALUE TYPE STRING,
CACREDITWORTHINESSMAYVALUE TYPE STRING,
CACREDITWORTHINESSJUNEVALUE TYPE STRING,
CACREDITWORTHINESSJULYVALUE TYPE STRING,
CACREDITWORTHINESSAUGUSTVALUE TYPE STRING,
CACREDITWORTHINESSSEPTEMBERVAL TYPE STRING,
CACREDITWORTHINESSOCTOBERVALUE TYPE STRING,
CACREDITWORTHINESSNOVEMBERVAL TYPE STRING,
CACREDITWORTHINESSDECEMBERVAL TYPE STRING,
CAMANUALCREDITWORTHINESSVALUE TYPE STRING,
CACREDITWORTHINESSFACTORINPCT TYPE STRING,
CAMANUALCREDITWORTHINESSDATE TYPE STRING,
CANUMBEROFCREDITWORTHINESSITMS TYPE STRING,
CAFROZENCREDITWORTHINESSDATE TYPE STRING,
CAUNFROZENCREDITWORTHINESSDATE TYPE STRING,
CAEXTERNALCREDITWORTHINESSVAL TYPE STRING,
CAEXTERNALCREDITWORTHINESSDATE TYPE STRING,
CACRDTWRTHNSSHASTOBEREPLICATED TYPE STRING,
CACREDITWRTHNSSREPLICATIONDATE TYPE STRING,
CALASTREPLICATEDCRDTWRTHNSSVAL TYPE STRING,
CAFROZENCREDITWORTHINESSVALUE TYPE STRING,
CACREDITWORTHINESSISFROZEN TYPE STRING,
AUTHORIZATIONGROUP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ICACREDITWMANG_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_ICACREDITWMANG_STR-MANDT sy-vline 
WA_ICACREDITWMANG_STR-BUSINESSPARTNER sy-vline 
WA_ICACREDITWMANG_STR-CALENDARYEAR sy-vline 
WA_ICACREDITWMANG_STR-CACREDITWORTHINESSJANUARYVALUE sy-vline 
WA_ICACREDITWMANG_STR-CACREDITWORTHINESSFEBRUARYVAL sy-vline 
WA_ICACREDITWMANG_STR-CACREDITWORTHINESSMARCHVALUE sy-vline 
WA_ICACREDITWMANG_STR-CACREDITWORTHINESSAPRILVALUE sy-vline 
WA_ICACREDITWMANG_STR-CACREDITWORTHINESSMAYVALUE sy-vline 
WA_ICACREDITWMANG_STR-CACREDITWORTHINESSJUNEVALUE sy-vline 
WA_ICACREDITWMANG_STR-CACREDITWORTHINESSJULYVALUE sy-vline 
WA_ICACREDITWMANG_STR-CACREDITWORTHINESSAUGUSTVALUE sy-vline 
WA_ICACREDITWMANG_STR-CACREDITWORTHINESSSEPTEMBERVAL sy-vline 
WA_ICACREDITWMANG_STR-CACREDITWORTHINESSOCTOBERVALUE sy-vline 
WA_ICACREDITWMANG_STR-CACREDITWORTHINESSNOVEMBERVAL sy-vline 
WA_ICACREDITWMANG_STR-CACREDITWORTHINESSDECEMBERVAL sy-vline 
WA_ICACREDITWMANG_STR-CAMANUALCREDITWORTHINESSVALUE sy-vline 
WA_ICACREDITWMANG_STR-CACREDITWORTHINESSFACTORINPCT sy-vline 
WA_ICACREDITWMANG_STR-CAMANUALCREDITWORTHINESSDATE sy-vline 
WA_ICACREDITWMANG_STR-CANUMBEROFCREDITWORTHINESSITMS sy-vline 
WA_ICACREDITWMANG_STR-CAFROZENCREDITWORTHINESSDATE sy-vline 
WA_ICACREDITWMANG_STR-CAUNFROZENCREDITWORTHINESSDATE sy-vline 
WA_ICACREDITWMANG_STR-CAEXTERNALCREDITWORTHINESSVAL sy-vline 
WA_ICACREDITWMANG_STR-CAEXTERNALCREDITWORTHINESSDATE sy-vline 
WA_ICACREDITWMANG_STR-CACRDTWRTHNSSHASTOBEREPLICATED sy-vline 
WA_ICACREDITWMANG_STR-CACREDITWRTHNSSREPLICATIONDATE sy-vline 
WA_ICACREDITWMANG_STR-CALASTREPLICATEDCRDTWRTHNSSVAL sy-vline 
WA_ICACREDITWMANG_STR-CAFROZENCREDITWORTHINESSVALUE sy-vline 
WA_ICACREDITWMANG_STR-CACREDITWORTHINESSISFROZEN sy-vline 
WA_ICACREDITWMANG_STR-AUTHORIZATIONGROUP sy-vline      INTO ld_text SEPARATED BY SPACE.

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