ABAP Select data from SAP table ULCM_CTX_DATE into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP ULCM_CTX_DATE 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_CTX_DATE. 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_CTX_DATE 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_CTX_DATE TYPE STANDARD TABLE OF ULCM_CTX_DATE,
      WA_ULCM_CTX_DATE TYPE ULCM_CTX_DATE,
      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_CTX_DATE> TYPE ULCM_CTX_DATE.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ULCM_CTX_DATE
*  INTO TABLE @DATA(IT_ULCM_CTX_DATE2).
*--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_CTX_DATE INDEX 1 INTO DATA(WA_ULCM_CTX_DATE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ULCM_CTX_DATE>-MANDT = 1.
<ULCM_CTX_DATE>-LGLCNTNTMCNTXTDATEUUID = 1.
<ULCM_CTX_DATE>-LGLCNTNTMFROMDATE = 1.
<ULCM_CTX_DATE>-LGLCNTNTMTODATE = 1.
<ULCM_CTX_DATE>-LGLCNTNTMISMANDATORY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ULCM_CTX_DATE-LGLCNTNTMDATETYPE, sy-vline,
  WA_ULCM_CTX_DATE-LGLCNTNTMCONTEXTUUID, sy-vline,
  WA_ULCM_CTX_DATE-LGLCNTNTMDATEISAUTOGENERATED, sy-vline,
  WA_ULCM_CTX_DATE-LGLCNTNTMISINTEGRELEVANT, sy-vline,
  WA_ULCM_CTX_DATE-KZ, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_ULCM_CTX_DATE 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_CTX_DATE 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_CTX_DATE INTO WA_ULCM_CTX_DATE.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_ULCM_CTX_DATE_STR, 
MANDT TYPE STRING,
LGLCNTNTMCNTXTDATEUUID TYPE STRING,
LGLCNTNTMFROMDATE TYPE STRING,
LGLCNTNTMTODATE TYPE STRING,
LGLCNTNTMISMANDATORY TYPE STRING,
LGLCNTNTMDATETYPE TYPE STRING,
LGLCNTNTMCONTEXTUUID TYPE STRING,
LGLCNTNTMDATEISAUTOGENERATED TYPE STRING,
LGLCNTNTMISINTEGRELEVANT TYPE STRING,
KZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ULCM_CTX_DATE_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_CTX_DATE_STR-MANDT sy-vline 
WA_ULCM_CTX_DATE_STR-LGLCNTNTMCNTXTDATEUUID sy-vline 
WA_ULCM_CTX_DATE_STR-LGLCNTNTMFROMDATE sy-vline 
WA_ULCM_CTX_DATE_STR-LGLCNTNTMTODATE sy-vline 
WA_ULCM_CTX_DATE_STR-LGLCNTNTMISMANDATORY sy-vline 
WA_ULCM_CTX_DATE_STR-LGLCNTNTMDATETYPE sy-vline 
WA_ULCM_CTX_DATE_STR-LGLCNTNTMCONTEXTUUID sy-vline 
WA_ULCM_CTX_DATE_STR-LGLCNTNTMDATEISAUTOGENERATED sy-vline 
WA_ULCM_CTX_DATE_STR-LGLCNTNTMISINTEGRELEVANT sy-vline 
WA_ULCM_CTX_DATE_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.