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

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SCWM/V_TWRKTYP
*  INTO TABLE @DATA(IT_/SCWM/V_TWRKTYP2).
*--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/V_TWRKTYP INDEX 1 INTO DATA(WA_/SCWM/V_TWRKTYP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SCWM/V_TWRKTYP>-MANDT = 1.
</SCWM/V_TWRKTYP>-LGNUM = 1.
</SCWM/V_TWRKTYP>-WRKSTTYP = 1.
</SCWM/V_TWRKTYP>-DESCRIPTION = 1.
</SCWM/V_TWRKTYP>-TRTYP = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SCWM/V_TWRKTYP-SCANNER, sy-vline,
  WA_/SCWM/V_TWRKTYP-DETAIL, sy-vline,
  WA_/SCWM/V_TWRKTYP-TREE, sy-vline,
  WA_/SCWM/V_TWRKTYP-TREE_2, sy-vline,
  WA_/SCWM/V_TWRKTYP-TREE_EXP, sy-vline,
  WA_/SCWM/V_TWRKTYP-DEF_RCODE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SCWM/V_TWRKTYP 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/V_TWRKTYP 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/V_TWRKTYP INTO WA_/SCWM/V_TWRKTYP.


*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_/SCWM/V_TWRKTYP_STR, 
MANDT TYPE STRING,
LGNUM TYPE STRING,
WRKSTTYP TYPE STRING,
DESCRIPTION TYPE STRING,
TRTYP TYPE STRING,
SCANNER TYPE STRING,
DETAIL TYPE STRING,
TREE TYPE STRING,
TREE_2 TYPE STRING,
TREE_EXP TYPE STRING,
DEF_RCODE TYPE STRING,
RCODE_REQ TYPE STRING,
PACK_ON_BIN TYPE STRING,
SC_001 TYPE STRING,
SC_002 TYPE STRING,
SC_003 TYPE STRING,
SC_004 TYPE STRING,
SC_005 TYPE STRING,
SC_006 TYPE STRING,
SC_BD1 TYPE STRING,
SC_BD2 TYPE STRING,
SC_BD3 TYPE STRING,
TR_001 TYPE STRING,
TR_002 TYPE STRING,
TR_003 TYPE STRING,
HUHDR_CH TYPE STRING,
DE_003 TYPE STRING,
DE_004 TYPE STRING,
DE_005 TYPE STRING,
DE_006 TYPE STRING,
DE_007 TYPE STRING,
DE_008 TYPE STRING,
DE_009 TYPE STRING,
DE_011 TYPE STRING,
DE_012 TYPE STRING,
DE_013 TYPE STRING,
DE_014 TYPE STRING,
DE_016 TYPE STRING,
DE_017 TYPE STRING,
SC_007 TYPE STRING,
SC_008 TYPE STRING,
SC_009 TYPE STRING,
SC_050 TYPE STRING,
SC_101 TYPE STRING,
SC_102 TYPE STRING,
SC_103 TYPE STRING,
SC_104 TYPE STRING,
SC_150 TYPE STRING,
DE_010 TYPE STRING,
DE_015 TYPE STRING,
DE_018 TYPE STRING,
DE_019 TYPE STRING,
DE_101 TYPE STRING,
DE_102 TYPE STRING,
DE_112 TYPE STRING,
DE_103 TYPE STRING,
DE_104 TYPE STRING,
VAS_TREE TYPE STRING,
TR_005 TYPE STRING,
TR_006 TYPE STRING,
DE_105 TYPE STRING,
DE_106 TYPE STRING,
DE_107 TYPE STRING,
DE_BD1 TYPE STRING,
DE_BD2 TYPE STRING,
DE_BD3 TYPE STRING,
DE_BD4 TYPE STRING,
DE_BD5 TYPE STRING,
TR_004 TYPE STRING,
TR_007 TYPE STRING,
SC_014 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SCWM/V_TWRKTYP_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/V_TWRKTYP_STR-MANDT sy-vline 
WA_/SCWM/V_TWRKTYP_STR-LGNUM sy-vline 
WA_/SCWM/V_TWRKTYP_STR-WRKSTTYP sy-vline 
WA_/SCWM/V_TWRKTYP_STR-DESCRIPTION sy-vline 
WA_/SCWM/V_TWRKTYP_STR-TRTYP sy-vline 
WA_/SCWM/V_TWRKTYP_STR-SCANNER sy-vline 
WA_/SCWM/V_TWRKTYP_STR-DETAIL sy-vline 
WA_/SCWM/V_TWRKTYP_STR-TREE sy-vline 
WA_/SCWM/V_TWRKTYP_STR-TREE_2 sy-vline 
WA_/SCWM/V_TWRKTYP_STR-TREE_EXP sy-vline 
WA_/SCWM/V_TWRKTYP_STR-DEF_RCODE sy-vline 
WA_/SCWM/V_TWRKTYP_STR-RCODE_REQ sy-vline 
WA_/SCWM/V_TWRKTYP_STR-PACK_ON_BIN sy-vline 
WA_/SCWM/V_TWRKTYP_STR-SC_001 sy-vline 
WA_/SCWM/V_TWRKTYP_STR-SC_002 sy-vline 
WA_/SCWM/V_TWRKTYP_STR-SC_003 sy-vline 
WA_/SCWM/V_TWRKTYP_STR-SC_004 sy-vline 
WA_/SCWM/V_TWRKTYP_STR-SC_005 sy-vline 
WA_/SCWM/V_TWRKTYP_STR-SC_006 sy-vline 
WA_/SCWM/V_TWRKTYP_STR-SC_BD1 sy-vline 
WA_/SCWM/V_TWRKTYP_STR-SC_BD2 sy-vline 
WA_/SCWM/V_TWRKTYP_STR-SC_BD3 sy-vline 
WA_/SCWM/V_TWRKTYP_STR-TR_001 sy-vline 
WA_/SCWM/V_TWRKTYP_STR-TR_002 sy-vline 
WA_/SCWM/V_TWRKTYP_STR-TR_003 sy-vline 
WA_/SCWM/V_TWRKTYP_STR-HUHDR_CH sy-vline 
WA_/SCWM/V_TWRKTYP_STR-DE_003 sy-vline 
WA_/SCWM/V_TWRKTYP_STR-DE_004 sy-vline 
WA_/SCWM/V_TWRKTYP_STR-DE_005 sy-vline 
WA_/SCWM/V_TWRKTYP_STR-DE_006 sy-vline 
WA_/SCWM/V_TWRKTYP_STR-DE_007 sy-vline 
WA_/SCWM/V_TWRKTYP_STR-DE_008 sy-vline 
WA_/SCWM/V_TWRKTYP_STR-DE_009 sy-vline 
WA_/SCWM/V_TWRKTYP_STR-DE_011 sy-vline 
WA_/SCWM/V_TWRKTYP_STR-DE_012 sy-vline 
WA_/SCWM/V_TWRKTYP_STR-DE_013 sy-vline 
WA_/SCWM/V_TWRKTYP_STR-DE_014 sy-vline 
WA_/SCWM/V_TWRKTYP_STR-DE_016 sy-vline 
WA_/SCWM/V_TWRKTYP_STR-DE_017 sy-vline 
WA_/SCWM/V_TWRKTYP_STR-SC_007 sy-vline 
WA_/SCWM/V_TWRKTYP_STR-SC_008 sy-vline 
WA_/SCWM/V_TWRKTYP_STR-SC_009 sy-vline 
WA_/SCWM/V_TWRKTYP_STR-SC_050 sy-vline 
WA_/SCWM/V_TWRKTYP_STR-SC_101 sy-vline 
WA_/SCWM/V_TWRKTYP_STR-SC_102 sy-vline 
WA_/SCWM/V_TWRKTYP_STR-SC_103 sy-vline 
WA_/SCWM/V_TWRKTYP_STR-SC_104 sy-vline 
WA_/SCWM/V_TWRKTYP_STR-SC_150 sy-vline 
WA_/SCWM/V_TWRKTYP_STR-DE_010 sy-vline 
WA_/SCWM/V_TWRKTYP_STR-DE_015 sy-vline 
WA_/SCWM/V_TWRKTYP_STR-DE_018 sy-vline 
WA_/SCWM/V_TWRKTYP_STR-DE_019 sy-vline 
WA_/SCWM/V_TWRKTYP_STR-DE_101 sy-vline 
WA_/SCWM/V_TWRKTYP_STR-DE_102 sy-vline 
WA_/SCWM/V_TWRKTYP_STR-DE_112 sy-vline 
WA_/SCWM/V_TWRKTYP_STR-DE_103 sy-vline 
WA_/SCWM/V_TWRKTYP_STR-DE_104 sy-vline 
WA_/SCWM/V_TWRKTYP_STR-VAS_TREE sy-vline 
WA_/SCWM/V_TWRKTYP_STR-TR_005 sy-vline 
WA_/SCWM/V_TWRKTYP_STR-TR_006 sy-vline 
WA_/SCWM/V_TWRKTYP_STR-DE_105 sy-vline 
WA_/SCWM/V_TWRKTYP_STR-DE_106 sy-vline 
WA_/SCWM/V_TWRKTYP_STR-DE_107 sy-vline 
WA_/SCWM/V_TWRKTYP_STR-DE_BD1 sy-vline 
WA_/SCWM/V_TWRKTYP_STR-DE_BD2 sy-vline 
WA_/SCWM/V_TWRKTYP_STR-DE_BD3 sy-vline 
WA_/SCWM/V_TWRKTYP_STR-DE_BD4 sy-vline 
WA_/SCWM/V_TWRKTYP_STR-DE_BD5 sy-vline 
WA_/SCWM/V_TWRKTYP_STR-TR_004 sy-vline 
WA_/SCWM/V_TWRKTYP_STR-TR_007 sy-vline 
WA_/SCWM/V_TWRKTYP_STR-SC_014 sy-vline      INTO ld_text SEPARATED BY SPACE.

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