ABAP Select data from SAP table WSTI_CALC_INTERNAL_CNTRL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WSTI_CALC_INTERNAL_CNTRL
*  INTO TABLE @DATA(IT_WSTI_CALC_INTERNAL_CNTRL2).
*--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_WSTI_CALC_INTERNAL_CNTRL INDEX 1 INTO DATA(WA_WSTI_CALC_INTERNAL_CNTRL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WSTI_CALC_INTERNAL_CNTRL>-ACTIVITY = 1.
<WSTI_CALC_INTERNAL_CNTRL>-TASKNUM = 1.
<WSTI_CALC_INTERNAL_CNTRL>-SET_UPDATE_TASK_LOCAL = 1.
<WSTI_CALC_INTERNAL_CNTRL>-COMMIT_WORK = 1.
<WSTI_CALC_INTERNAL_CNTRL>-IN_BACKGROUND = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WSTI_CALC_INTERNAL_CNTRL-PARALLEL_PROC, sy-vline,
  WA_WSTI_CALC_INTERNAL_CNTRL-TASK_STARTED_SEQUENTIALLY, sy-vline,
  WA_WSTI_CALC_INTERNAL_CNTRL-WARNING_IF_LOCKED, sy-vline,
  WA_WSTI_CALC_INTERNAL_CNTRL-EVENTS_CUMULATED, sy-vline,
  WA_WSTI_CALC_INTERNAL_CNTRL-COMPLETE_RECALCULATION, sy-vline,
  WA_WSTI_CALC_INTERNAL_CNTRL-GET_PROCESSED_EVENTS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WSTI_CALC_INTERNAL_CNTRL 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_WSTI_CALC_INTERNAL_CNTRL 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_WSTI_CALC_INTERNAL_CNTRL INTO WA_WSTI_CALC_INTERNAL_CNTRL.


*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_WSTI_CALC_INTERNAL_CNTRL_STR, 
ACTIVITY TYPE STRING,
TASKNUM TYPE STRING,
SET_UPDATE_TASK_LOCAL TYPE STRING,
COMMIT_WORK TYPE STRING,
IN_BACKGROUND TYPE STRING,
PARALLEL_PROC TYPE STRING,
TASK_STARTED_SEQUENTIALLY TYPE STRING,
WARNING_IF_LOCKED TYPE STRING,
EVENTS_CUMULATED TYPE STRING,
COMPLETE_RECALCULATION TYPE STRING,
GET_PROCESSED_EVENTS TYPE STRING,
BADI_GET_EVENTS_ACTIVE TYPE STRING,
RETURN_CHILD_LOG TYPE STRING,
RERUN TYPE STRING,
NUM_OF_TASKS TYPE STRING,
VALUE_INVMAN TYPE STRING,
QUANTITY_INVMAN TYPE STRING,
SOBKZ_FLAG TYPE STRING,
EVENT_DELETED TYPE STRING,
EVENT_CHANGED TYPE STRING,
SHOW_XBUIB_DONE TYPE STRING,
WSTI_DATA_SOURCE TYPE STRING,
SHOW_DATA_SOURCE TYPE STRING,
XBUIB TYPE STRING,
PI_24H_DEACT_BY_BADI TYPE STRING,
PROCESSING_STARTED TYPE STRING,
ERROR TYPE STRING,
RESULT_MSG_HANDLE TYPE STRING,
LOG_HANDLE TYPE STRING,
MSGNUMBER TYPE STRING,
RETURNED TYPE STRING,
RUNNING TYPE STRING,
TIMED_OUT TYPE STRING,
CNTRL_SUPPLIED TYPE STRING,
ERP_POSTING_OPEN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WSTI_CALC_INTERNAL_CNTRL_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_WSTI_CALC_INTERNAL_CNTRL_STR-ACTIVITY sy-vline 
WA_WSTI_CALC_INTERNAL_CNTRL_STR-TASKNUM sy-vline 
WA_WSTI_CALC_INTERNAL_CNTRL_STR-SET_UPDATE_TASK_LOCAL sy-vline 
WA_WSTI_CALC_INTERNAL_CNTRL_STR-COMMIT_WORK sy-vline 
WA_WSTI_CALC_INTERNAL_CNTRL_STR-IN_BACKGROUND sy-vline 
WA_WSTI_CALC_INTERNAL_CNTRL_STR-PARALLEL_PROC sy-vline 
WA_WSTI_CALC_INTERNAL_CNTRL_STR-TASK_STARTED_SEQUENTIALLY sy-vline 
WA_WSTI_CALC_INTERNAL_CNTRL_STR-WARNING_IF_LOCKED sy-vline 
WA_WSTI_CALC_INTERNAL_CNTRL_STR-EVENTS_CUMULATED sy-vline 
WA_WSTI_CALC_INTERNAL_CNTRL_STR-COMPLETE_RECALCULATION sy-vline 
WA_WSTI_CALC_INTERNAL_CNTRL_STR-GET_PROCESSED_EVENTS sy-vline 
WA_WSTI_CALC_INTERNAL_CNTRL_STR-BADI_GET_EVENTS_ACTIVE sy-vline 
WA_WSTI_CALC_INTERNAL_CNTRL_STR-RETURN_CHILD_LOG sy-vline 
WA_WSTI_CALC_INTERNAL_CNTRL_STR-RERUN sy-vline 
WA_WSTI_CALC_INTERNAL_CNTRL_STR-NUM_OF_TASKS sy-vline 
WA_WSTI_CALC_INTERNAL_CNTRL_STR-VALUE_INVMAN sy-vline 
WA_WSTI_CALC_INTERNAL_CNTRL_STR-QUANTITY_INVMAN sy-vline 
WA_WSTI_CALC_INTERNAL_CNTRL_STR-SOBKZ_FLAG sy-vline 
WA_WSTI_CALC_INTERNAL_CNTRL_STR-EVENT_DELETED sy-vline 
WA_WSTI_CALC_INTERNAL_CNTRL_STR-EVENT_CHANGED sy-vline 
WA_WSTI_CALC_INTERNAL_CNTRL_STR-SHOW_XBUIB_DONE sy-vline 
WA_WSTI_CALC_INTERNAL_CNTRL_STR-WSTI_DATA_SOURCE sy-vline 
WA_WSTI_CALC_INTERNAL_CNTRL_STR-SHOW_DATA_SOURCE sy-vline 
WA_WSTI_CALC_INTERNAL_CNTRL_STR-XBUIB sy-vline 
WA_WSTI_CALC_INTERNAL_CNTRL_STR-PI_24H_DEACT_BY_BADI sy-vline 
WA_WSTI_CALC_INTERNAL_CNTRL_STR-PROCESSING_STARTED sy-vline 
WA_WSTI_CALC_INTERNAL_CNTRL_STR-ERROR sy-vline 
WA_WSTI_CALC_INTERNAL_CNTRL_STR-RESULT_MSG_HANDLE sy-vline 
WA_WSTI_CALC_INTERNAL_CNTRL_STR-LOG_HANDLE sy-vline 
WA_WSTI_CALC_INTERNAL_CNTRL_STR-MSGNUMBER sy-vline 
WA_WSTI_CALC_INTERNAL_CNTRL_STR-RETURNED sy-vline 
WA_WSTI_CALC_INTERNAL_CNTRL_STR-RUNNING sy-vline 
WA_WSTI_CALC_INTERNAL_CNTRL_STR-TIMED_OUT sy-vline 
WA_WSTI_CALC_INTERNAL_CNTRL_STR-CNTRL_SUPPLIED sy-vline 
WA_WSTI_CALC_INTERNAL_CNTRL_STR-ERP_POSTING_OPEN sy-vline      INTO ld_text SEPARATED BY SPACE.

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