ABAP Select data from SAP table ULCM_OBLIGATION into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ULCM_OBLIGATION
*  INTO TABLE @DATA(IT_ULCM_OBLIGATION2).
*--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_ULCM_OBLIGATION INDEX 1 INTO DATA(WA_ULCM_OBLIGATION2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ULCM_OBLIGATION>-MANDT = 1.
<ULCM_OBLIGATION>-LGLCNTNTMDOCOBLGNUUID = 1.
<ULCM_OBLIGATION>-LGLCNTNTMDOCOBLIGATION = 1.
<ULCM_OBLIGATION>-LGLCNTNTMDOCOBLGNTYPE = 1.
<ULCM_OBLIGATION>-LGLCNTNTMDOCUMENTUUID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ULCM_OBLIGATION-LGLCNTNTMDOCOBLGNRISK, sy-vline,
  WA_ULCM_OBLIGATION-LGLCNTNTMDOCOBLGNSTRTDTE, sy-vline,
  WA_ULCM_OBLIGATION-LGLCNTNTMDOCOBLGNENDDTE, sy-vline,
  WA_ULCM_OBLIGATION-LGLCNTNTMDOCOBLGNHASREM, sy-vline,
  WA_ULCM_OBLIGATION-LGLCNTNTMDOCOBLGNDESCUUID, sy-vline,
  WA_ULCM_OBLIGATION-LGLCNTNTMDOCOBLGNCNDNUUID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ULCM_OBLIGATION 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_ULCM_OBLIGATION 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_ULCM_OBLIGATION INTO WA_ULCM_OBLIGATION.


*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 LGLCNTNTMDOCOBLIGATION
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ULCM_OBLIGATION-LGLCNTNTMDOCOBLIGATION
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ULCM_OBLIGATION-LGLCNTNTMDOCOBLIGATION.
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_ULCM_OBLIGATION_STR, 
MANDT TYPE STRING,
LGLCNTNTMDOCOBLGNUUID TYPE STRING,
LGLCNTNTMDOCOBLIGATION TYPE STRING,
LGLCNTNTMDOCOBLGNTYPE TYPE STRING,
LGLCNTNTMDOCUMENTUUID TYPE STRING,
LGLCNTNTMDOCOBLGNRISK TYPE STRING,
LGLCNTNTMDOCOBLGNSTRTDTE TYPE STRING,
LGLCNTNTMDOCOBLGNENDDTE TYPE STRING,
LGLCNTNTMDOCOBLGNHASREM TYPE STRING,
LGLCNTNTMDOCOBLGNDESCUUID TYPE STRING,
LGLCNTNTMDOCOBLGNCNDNUUID TYPE STRING,
LGLCNTNTMDOCOBLGNCHGINDESCTXT TYPE STRING,
LGLCNTNTMDOCOBLGNCHGINCNDNTXT TYPE STRING,
KZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ULCM_OBLIGATION_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_ULCM_OBLIGATION_STR-MANDT sy-vline 
WA_ULCM_OBLIGATION_STR-LGLCNTNTMDOCOBLGNUUID sy-vline 
WA_ULCM_OBLIGATION_STR-LGLCNTNTMDOCOBLIGATION sy-vline 
WA_ULCM_OBLIGATION_STR-LGLCNTNTMDOCOBLGNTYPE sy-vline 
WA_ULCM_OBLIGATION_STR-LGLCNTNTMDOCUMENTUUID sy-vline 
WA_ULCM_OBLIGATION_STR-LGLCNTNTMDOCOBLGNRISK sy-vline 
WA_ULCM_OBLIGATION_STR-LGLCNTNTMDOCOBLGNSTRTDTE sy-vline 
WA_ULCM_OBLIGATION_STR-LGLCNTNTMDOCOBLGNENDDTE sy-vline 
WA_ULCM_OBLIGATION_STR-LGLCNTNTMDOCOBLGNHASREM sy-vline 
WA_ULCM_OBLIGATION_STR-LGLCNTNTMDOCOBLGNDESCUUID sy-vline 
WA_ULCM_OBLIGATION_STR-LGLCNTNTMDOCOBLGNCNDNUUID sy-vline 
WA_ULCM_OBLIGATION_STR-LGLCNTNTMDOCOBLGNCHGINDESCTXT sy-vline 
WA_ULCM_OBLIGATION_STR-LGLCNTNTMDOCOBLGNCHGINCNDNTXT sy-vline 
WA_ULCM_OBLIGATION_STR-KZ sy-vline      INTO ld_text SEPARATED BY SPACE.

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