ABAP Select data from SAP table ICRDTLMTREQATTR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ICRDTLMTREQATTR
*  INTO TABLE @DATA(IT_ICRDTLMTREQATTR2).
*--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_ICRDTLMTREQATTR INDEX 1 INTO DATA(WA_ICRDTLMTREQATTR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ICRDTLMTREQATTR>-MANDT = 1.
<ICRDTLMTREQATTR>-CASEUUID = 1.
<ICRDTLMTREQATTR>-BUSINESSPARTNER = 1.
<ICRDTLMTREQATTR>-CREDITSEGMENT = 1.
<ICRDTLMTREQATTR>-CREDITLIMITAMOUNT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ICRDTLMTREQATTR-CREDITLIMITREQUESTEDAMOUNT, sy-vline,
  WA_ICRDTLMTREQATTR-CREDITLIMITAPPROVEDAMOUNT, sy-vline,
  WA_ICRDTLMTREQATTR-EXPECTEDSALESAMOUNT, sy-vline,
  WA_ICRDTLMTREQATTR-CUSTOMERCREDITEXPOSUREAMOUNT, sy-vline,
  WA_ICRDTLMTREQATTR-CREDITSEGMENTCURRENCY, sy-vline,
  WA_ICRDTLMTREQATTR-CREDITLIMITUTILIZATIONPCT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ICRDTLMTREQATTR 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_ICRDTLMTREQATTR 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_ICRDTLMTREQATTR INTO WA_ICRDTLMTREQATTR.


*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_ICRDTLMTREQATTR-BUSINESSPARTNER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICRDTLMTREQATTR-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_ICRDTLMTREQATTR_STR, 
MANDT TYPE STRING,
CASEUUID TYPE STRING,
BUSINESSPARTNER TYPE STRING,
CREDITSEGMENT TYPE STRING,
CREDITLIMITAMOUNT TYPE STRING,
CREDITLIMITREQUESTEDAMOUNT TYPE STRING,
CREDITLIMITAPPROVEDAMOUNT TYPE STRING,
EXPECTEDSALESAMOUNT TYPE STRING,
CUSTOMERCREDITEXPOSUREAMOUNT TYPE STRING,
CREDITSEGMENTCURRENCY TYPE STRING,
CREDITLIMITUTILIZATIONPCT TYPE STRING,
BUSINESSPARTNERRATING TYPE STRING,
CREDITRISKCLASS TYPE STRING,
CRDTMGMTBUSINESSPARTNERGROUP TYPE STRING,
CREDITLIMITVALIDITYENDDATE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ICRDTLMTREQATTR_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_ICRDTLMTREQATTR_STR-MANDT sy-vline 
WA_ICRDTLMTREQATTR_STR-CASEUUID sy-vline 
WA_ICRDTLMTREQATTR_STR-BUSINESSPARTNER sy-vline 
WA_ICRDTLMTREQATTR_STR-CREDITSEGMENT sy-vline 
WA_ICRDTLMTREQATTR_STR-CREDITLIMITAMOUNT sy-vline 
WA_ICRDTLMTREQATTR_STR-CREDITLIMITREQUESTEDAMOUNT sy-vline 
WA_ICRDTLMTREQATTR_STR-CREDITLIMITAPPROVEDAMOUNT sy-vline 
WA_ICRDTLMTREQATTR_STR-EXPECTEDSALESAMOUNT sy-vline 
WA_ICRDTLMTREQATTR_STR-CUSTOMERCREDITEXPOSUREAMOUNT sy-vline 
WA_ICRDTLMTREQATTR_STR-CREDITSEGMENTCURRENCY sy-vline 
WA_ICRDTLMTREQATTR_STR-CREDITLIMITUTILIZATIONPCT sy-vline 
WA_ICRDTLMTREQATTR_STR-BUSINESSPARTNERRATING sy-vline 
WA_ICRDTLMTREQATTR_STR-CREDITRISKCLASS sy-vline 
WA_ICRDTLMTREQATTR_STR-CRDTMGMTBUSINESSPARTNERGROUP sy-vline 
WA_ICRDTLMTREQATTR_STR-CREDITLIMITVALIDITYENDDATE sy-vline      INTO ld_text SEPARATED BY SPACE.

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