ABAP Select data from SAP table /SCWM/S_LM_EWL_SELECTION into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /SCWM/S_LM_EWL_SELECTION 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 /SCWM/S_LM_EWL_SELECTION. 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 /SCWM/S_LM_EWL_SELECTION 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_/SCWM/S_LM_EWL_SELECTION TYPE STANDARD TABLE OF /SCWM/S_LM_EWL_SELECTION,
      WA_/SCWM/S_LM_EWL_SELECTION TYPE /SCWM/S_LM_EWL_SELECTION,
      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: </SCWM/S_LM_EWL_SELECTION> TYPE /SCWM/S_LM_EWL_SELECTION.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /SCWM/S_LM_EWL_SELECTION
  INTO TABLE IT_/SCWM/S_LM_EWL_SELECTION.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SCWM/S_LM_EWL_SELECTION
*  INTO TABLE @DATA(IT_/SCWM/S_LM_EWL_SELECTION2).
*--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_/SCWM/S_LM_EWL_SELECTION INDEX 1 INTO DATA(WA_/SCWM/S_LM_EWL_SELECTION2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/SCWM/S_LM_EWL_SELECTION ASSIGNING </SCWM/S_LM_EWL_SELECTION>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SCWM/S_LM_EWL_SELECTION>-LGNUM = 1.
</SCWM/S_LM_EWL_SELECTION>-TYPE = 1.
</SCWM/S_LM_EWL_SELECTION>-STATUS = 1.
</SCWM/S_LM_EWL_SELECTION>-IN_PROCESS = 1.
</SCWM/S_LM_EWL_SELECTION>-OBJTY = 1.

ENDLOOP.

LOOP AT IT_/SCWM/S_LM_EWL_SELECTION INTO WA_/SCWM/S_LM_EWL_SELECTION.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SCWM/S_LM_EWL_SELECTION-ENTITLED, sy-vline,
  WA_/SCWM/S_LM_EWL_SELECTION-AAREA, sy-vline,
  WA_/SCWM/S_LM_EWL_SELECTION-PROCS, sy-vline,
  WA_/SCWM/S_LM_EWL_SELECTION-PC_ID_REF, sy-vline,
  WA_/SCWM/S_LM_EWL_SELECTION-ID_REF, sy-vline,
  WA_/SCWM/S_LM_EWL_SELECTION-CREATED_AT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SCWM/S_LM_EWL_SELECTION 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_/SCWM/S_LM_EWL_SELECTION 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_/SCWM/S_LM_EWL_SELECTION INTO WA_/SCWM/S_LM_EWL_SELECTION.


*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 ENTITLED
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_LM_EWL_SELECTION-ENTITLED
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_LM_EWL_SELECTION-ENTITLED.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTPS, internal->external for field CREATED_AT
CALL FUNCTION 'CONVERSION_EXIT_TSTPS_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_LM_EWL_SELECTION-CREATED_AT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_LM_EWL_SELECTION-CREATED_AT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTPS, internal->external for field CHANGED_AT
CALL FUNCTION 'CONVERSION_EXIT_TSTPS_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_LM_EWL_SELECTION-CHANGED_AT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_LM_EWL_SELECTION-CHANGED_AT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PRR_ID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_LM_EWL_SELECTION-PRR_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_LM_EWL_SELECTION-PRR_ID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PRR_GR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_LM_EWL_SELECTION-PRR_GR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_LM_EWL_SELECTION-PRR_GR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field TEAMLEAD
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_LM_EWL_SELECTION-TEAMLEAD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_LM_EWL_SELECTION-TEAMLEAD.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PRR_GR_EWL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_LM_EWL_SELECTION-PRR_GR_EWL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_LM_EWL_SELECTION-PRR_GR_EWL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field TEAMLEAD_EWL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_LM_EWL_SELECTION-TEAMLEAD_EWL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_LM_EWL_SELECTION-TEAMLEAD_EWL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SHIFT_LEAD
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_LM_EWL_SELECTION-SHIFT_LEAD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_LM_EWL_SELECTION-SHIFT_LEAD.
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_/SCWM/S_LM_EWL_SELECTION_STR, 
LGNUM TYPE STRING,
TYPE TYPE STRING,
STATUS TYPE STRING,
IN_PROCESS TYPE STRING,
OBJTY TYPE STRING,
ENTITLED TYPE STRING,
AAREA TYPE STRING,
PROCS TYPE STRING,
PC_ID_REF TYPE STRING,
ID_REF TYPE STRING,
CREATED_AT TYPE STRING,
CREATED_BY TYPE STRING,
CHANGED_AT TYPE STRING,
CHANGED_BY TYPE STRING,
ALTERED_DIR TYPE STRING,
APD_CHANGED TYPE STRING,
LA_CODE TYPE STRING,
LA_GRP TYPE STRING,
EVAL_TYPE TYPE STRING,
PRR_ID TYPE STRING,
PRR_GR TYPE STRING,
TEAMLEAD TYPE STRING,
PERNR TYPE STRING,
PRR_GR_EWL TYPE STRING,
TEAMLEAD_EWL TYPE STRING,
PRR_REPG TYPE STRING,
PRR_TYPE TYPE STRING,
WORKCAT TYPE STRING,
SRV_START_DATE TYPE STRING,
SHIFT TYPE STRING,
SHIFT_SEQ TYPE STRING,
SHIFT_START_DAY TYPE STRING,
SHIFT_LEAD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SCWM/S_LM_EWL_SELECTION_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_/SCWM/S_LM_EWL_SELECTION_STR-LGNUM sy-vline 
WA_/SCWM/S_LM_EWL_SELECTION_STR-TYPE sy-vline 
WA_/SCWM/S_LM_EWL_SELECTION_STR-STATUS sy-vline 
WA_/SCWM/S_LM_EWL_SELECTION_STR-IN_PROCESS sy-vline 
WA_/SCWM/S_LM_EWL_SELECTION_STR-OBJTY sy-vline 
WA_/SCWM/S_LM_EWL_SELECTION_STR-ENTITLED sy-vline 
WA_/SCWM/S_LM_EWL_SELECTION_STR-AAREA sy-vline 
WA_/SCWM/S_LM_EWL_SELECTION_STR-PROCS sy-vline 
WA_/SCWM/S_LM_EWL_SELECTION_STR-PC_ID_REF sy-vline 
WA_/SCWM/S_LM_EWL_SELECTION_STR-ID_REF sy-vline 
WA_/SCWM/S_LM_EWL_SELECTION_STR-CREATED_AT sy-vline 
WA_/SCWM/S_LM_EWL_SELECTION_STR-CREATED_BY sy-vline 
WA_/SCWM/S_LM_EWL_SELECTION_STR-CHANGED_AT sy-vline 
WA_/SCWM/S_LM_EWL_SELECTION_STR-CHANGED_BY sy-vline 
WA_/SCWM/S_LM_EWL_SELECTION_STR-ALTERED_DIR sy-vline 
WA_/SCWM/S_LM_EWL_SELECTION_STR-APD_CHANGED sy-vline 
WA_/SCWM/S_LM_EWL_SELECTION_STR-LA_CODE sy-vline 
WA_/SCWM/S_LM_EWL_SELECTION_STR-LA_GRP sy-vline 
WA_/SCWM/S_LM_EWL_SELECTION_STR-EVAL_TYPE sy-vline 
WA_/SCWM/S_LM_EWL_SELECTION_STR-PRR_ID sy-vline 
WA_/SCWM/S_LM_EWL_SELECTION_STR-PRR_GR sy-vline 
WA_/SCWM/S_LM_EWL_SELECTION_STR-TEAMLEAD sy-vline 
WA_/SCWM/S_LM_EWL_SELECTION_STR-PERNR sy-vline 
WA_/SCWM/S_LM_EWL_SELECTION_STR-PRR_GR_EWL sy-vline 
WA_/SCWM/S_LM_EWL_SELECTION_STR-TEAMLEAD_EWL sy-vline 
WA_/SCWM/S_LM_EWL_SELECTION_STR-PRR_REPG sy-vline 
WA_/SCWM/S_LM_EWL_SELECTION_STR-PRR_TYPE sy-vline 
WA_/SCWM/S_LM_EWL_SELECTION_STR-WORKCAT sy-vline 
WA_/SCWM/S_LM_EWL_SELECTION_STR-SRV_START_DATE sy-vline 
WA_/SCWM/S_LM_EWL_SELECTION_STR-SHIFT sy-vline 
WA_/SCWM/S_LM_EWL_SELECTION_STR-SHIFT_SEQ sy-vline 
WA_/SCWM/S_LM_EWL_SELECTION_STR-SHIFT_START_DAY sy-vline 
WA_/SCWM/S_LM_EWL_SELECTION_STR-SHIFT_LEAD sy-vline      INTO ld_text SEPARATED BY SPACE.

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