ABAP Select data from SAP table TSECM_REQUEST_STACK into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TSECM_REQUEST_STACK
*  INTO TABLE @DATA(IT_TSECM_REQUEST_STACK2).
*--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_TSECM_REQUEST_STACK INDEX 1 INTO DATA(WA_TSECM_REQUEST_STACK2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TSECM_REQUEST_STACK>-MANDT = 1.
<TSECM_REQUEST_STACK>-GUID_ECM = 1.
<TSECM_REQUEST_STACK>-AENNR = 1.
<TSECM_REQUEST_STACK>-AETYP = 1.
<TSECM_REQUEST_STACK>-ECMGROUP = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TSECM_REQUEST_STACK-AEUSER, sy-vline,
  WA_TSECM_REQUEST_STACK-LVORM, sy-vline,
  WA_TSECM_REQUEST_STACK-ENDDAT, sy-vline,
  WA_TSECM_REQUEST_STACK-AEKND, sy-vline,
  WA_TSECM_REQUEST_STACK-REF_REQ, sy-vline,
  WA_TSECM_REQUEST_STACK-GUID_REQ_WORK, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TSECM_REQUEST_STACK 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_TSECM_REQUEST_STACK 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_TSECM_REQUEST_STACK INTO WA_TSECM_REQUEST_STACK.


*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 SUBMITTER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TSECM_REQUEST_STACK-SUBMITTER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TSECM_REQUEST_STACK-SUBMITTER.
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_TSECM_REQUEST_STACK_STR, 
MANDT TYPE STRING,
GUID_ECM TYPE STRING,
AENNR TYPE STRING,
AETYP TYPE STRING,
ECMGROUP TYPE STRING,
AEUSER TYPE STRING,
LVORM TYPE STRING,
ENDDAT TYPE STRING,
AEKND TYPE STRING,
REF_REQ TYPE STRING,
GUID_REQ_WORK TYPE STRING,
REASON TYPE STRING,
PRIO TYPE STRING,
STSMA TYPE STRING,
SUBMITTER TYPE STRING,
COST_OVV TYPE STRING,
CURRENCY TYPE STRING,
AETXT TYPE STRING,
AETXT_WORK TYPE STRING,
ANNAM TYPE STRING,
ANDAT TYPE STRING,
AENAM TYPE STRING,
AEDAT TYPE STRING,
OBJADM_AENAM TYPE STRING,
OBJADM_AEDAT TYPE STRING,
OBJ_AENAM TYPE STRING,
OBJ_AEDAT TYPE STRING,
REF_REQNR TYPE STRING,
TEXT TYPE STRING,
TEXT_WORK TYPE STRING,
STAT TYPE STRING,
HIER_ORD TYPE STRING,
HIER_REQ TYPE STRING,
OBJADM TYPE STRING,
GROUP TYPE STRING,
STXT TYPE STRING,
STXT_WORK TYPE STRING,
LTXT TYPE STRING,
LTXT_WORK TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TSECM_REQUEST_STACK_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_TSECM_REQUEST_STACK_STR-MANDT sy-vline 
WA_TSECM_REQUEST_STACK_STR-GUID_ECM sy-vline 
WA_TSECM_REQUEST_STACK_STR-AENNR sy-vline 
WA_TSECM_REQUEST_STACK_STR-AETYP sy-vline 
WA_TSECM_REQUEST_STACK_STR-ECMGROUP sy-vline 
WA_TSECM_REQUEST_STACK_STR-AEUSER sy-vline 
WA_TSECM_REQUEST_STACK_STR-LVORM sy-vline 
WA_TSECM_REQUEST_STACK_STR-ENDDAT sy-vline 
WA_TSECM_REQUEST_STACK_STR-AEKND sy-vline 
WA_TSECM_REQUEST_STACK_STR-REF_REQ sy-vline 
WA_TSECM_REQUEST_STACK_STR-GUID_REQ_WORK sy-vline 
WA_TSECM_REQUEST_STACK_STR-REASON sy-vline 
WA_TSECM_REQUEST_STACK_STR-PRIO sy-vline 
WA_TSECM_REQUEST_STACK_STR-STSMA sy-vline 
WA_TSECM_REQUEST_STACK_STR-SUBMITTER sy-vline 
WA_TSECM_REQUEST_STACK_STR-COST_OVV sy-vline 
WA_TSECM_REQUEST_STACK_STR-CURRENCY sy-vline 
WA_TSECM_REQUEST_STACK_STR-AETXT sy-vline 
WA_TSECM_REQUEST_STACK_STR-AETXT_WORK sy-vline 
WA_TSECM_REQUEST_STACK_STR-ANNAM sy-vline 
WA_TSECM_REQUEST_STACK_STR-ANDAT sy-vline 
WA_TSECM_REQUEST_STACK_STR-AENAM sy-vline 
WA_TSECM_REQUEST_STACK_STR-AEDAT sy-vline 
WA_TSECM_REQUEST_STACK_STR-OBJADM_AENAM sy-vline 
WA_TSECM_REQUEST_STACK_STR-OBJADM_AEDAT sy-vline 
WA_TSECM_REQUEST_STACK_STR-OBJ_AENAM sy-vline 
WA_TSECM_REQUEST_STACK_STR-OBJ_AEDAT sy-vline 
WA_TSECM_REQUEST_STACK_STR-REF_REQNR sy-vline 
WA_TSECM_REQUEST_STACK_STR-TEXT sy-vline 
WA_TSECM_REQUEST_STACK_STR-TEXT_WORK sy-vline 
WA_TSECM_REQUEST_STACK_STR-STAT sy-vline 
WA_TSECM_REQUEST_STACK_STR-HIER_ORD sy-vline 
WA_TSECM_REQUEST_STACK_STR-HIER_REQ sy-vline 
WA_TSECM_REQUEST_STACK_STR-OBJADM sy-vline 
WA_TSECM_REQUEST_STACK_STR-GROUP sy-vline 
WA_TSECM_REQUEST_STACK_STR-STXT sy-vline 
WA_TSECM_REQUEST_STACK_STR-STXT_WORK sy-vline 
WA_TSECM_REQUEST_STACK_STR-LTXT sy-vline 
WA_TSECM_REQUEST_STACK_STR-LTXT_WORK sy-vline      INTO ld_text SEPARATED BY SPACE.

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