ABAP Select data from SAP table TXW_VENDOR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TXW_VENDOR
*  INTO TABLE @DATA(IT_TXW_VENDOR2).
*--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_TXW_VENDOR INDEX 1 INTO DATA(WA_TXW_VENDOR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TXW_VENDOR>-MANDT = 1.
<TXW_VENDOR>-BUKRS = 1.
<TXW_VENDOR>-LIFNR = 1.
<TXW_VENDOR>-NAME1 = 1.
<TXW_VENDOR>-NAME2 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TXW_VENDOR-STCD1, sy-vline,
  WA_TXW_VENDOR-STCD2, sy-vline,
  WA_TXW_VENDOR-VBUND, sy-vline,
  WA_TXW_VENDOR-STRAS, sy-vline,
  WA_TXW_VENDOR-ORT01, sy-vline,
  WA_TXW_VENDOR-ORT02, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TXW_VENDOR 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_TXW_VENDOR 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_TXW_VENDOR INTO WA_TXW_VENDOR.


*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 LIFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TXW_VENDOR-LIFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TXW_VENDOR-LIFNR.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field FISKU
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TXW_VENDOR-FISKU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TXW_VENDOR-FISKU.
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_TXW_VENDOR_STR, 
MANDT TYPE STRING,
BUKRS TYPE STRING,
LIFNR TYPE STRING,
NAME1 TYPE STRING,
NAME2 TYPE STRING,
STCD1 TYPE STRING,
STCD2 TYPE STRING,
VBUND TYPE STRING,
STRAS TYPE STRING,
ORT01 TYPE STRING,
ORT02 TYPE STRING,
REGIO TYPE STRING,
LAND1 TYPE STRING,
PSTLZ TYPE STRING,
PFACH TYPE STRING,
TXJCD TYPE STRING,
PSTL2 TYPE STRING,
XZEMP TYPE STRING,
LNRZB TYPE STRING,
AKONT TYPE STRING,
XVERR TYPE STRING,
KUNNR TYPE STRING,
QSZNR TYPE STRING,
QSZDT TYPE STRING,
QSSKZ TYPE STRING,
QSREC TYPE STRING,
QSBGR TYPE STRING,
QLAND TYPE STRING,
XCPDK TYPE STRING,
LNRZE TYPE STRING,
ADRNR TYPE STRING,
BRSCH TYPE STRING,
KTOKK TYPE STRING,
MINDK TYPE STRING,
ZTERM TYPE STRING,
ERDAT TYPE STRING,
FISKU TYPE STRING,
STENR TYPE STRING,
ERNAM TYPE STRING,
ZWELS TYPE STRING,
UZAWE TYPE STRING,
HOUSE_NUM1 TYPE STRING,
HOUSE_NUM2 TYPE STRING,
NAME3 TYPE STRING,
NAME4 TYPE STRING,
STCD3 TYPE STRING,
STCD4 TYPE STRING,
STCD5 TYPE STRING,
STCD6 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TXW_VENDOR_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_TXW_VENDOR_STR-MANDT sy-vline 
WA_TXW_VENDOR_STR-BUKRS sy-vline 
WA_TXW_VENDOR_STR-LIFNR sy-vline 
WA_TXW_VENDOR_STR-NAME1 sy-vline 
WA_TXW_VENDOR_STR-NAME2 sy-vline 
WA_TXW_VENDOR_STR-STCD1 sy-vline 
WA_TXW_VENDOR_STR-STCD2 sy-vline 
WA_TXW_VENDOR_STR-VBUND sy-vline 
WA_TXW_VENDOR_STR-STRAS sy-vline 
WA_TXW_VENDOR_STR-ORT01 sy-vline 
WA_TXW_VENDOR_STR-ORT02 sy-vline 
WA_TXW_VENDOR_STR-REGIO sy-vline 
WA_TXW_VENDOR_STR-LAND1 sy-vline 
WA_TXW_VENDOR_STR-PSTLZ sy-vline 
WA_TXW_VENDOR_STR-PFACH sy-vline 
WA_TXW_VENDOR_STR-TXJCD sy-vline 
WA_TXW_VENDOR_STR-PSTL2 sy-vline 
WA_TXW_VENDOR_STR-XZEMP sy-vline 
WA_TXW_VENDOR_STR-LNRZB sy-vline 
WA_TXW_VENDOR_STR-AKONT sy-vline 
WA_TXW_VENDOR_STR-XVERR sy-vline 
WA_TXW_VENDOR_STR-KUNNR sy-vline 
WA_TXW_VENDOR_STR-QSZNR sy-vline 
WA_TXW_VENDOR_STR-QSZDT sy-vline 
WA_TXW_VENDOR_STR-QSSKZ sy-vline 
WA_TXW_VENDOR_STR-QSREC sy-vline 
WA_TXW_VENDOR_STR-QSBGR sy-vline 
WA_TXW_VENDOR_STR-QLAND sy-vline 
WA_TXW_VENDOR_STR-XCPDK sy-vline 
WA_TXW_VENDOR_STR-LNRZE sy-vline 
WA_TXW_VENDOR_STR-ADRNR sy-vline 
WA_TXW_VENDOR_STR-BRSCH sy-vline 
WA_TXW_VENDOR_STR-KTOKK sy-vline 
WA_TXW_VENDOR_STR-MINDK sy-vline 
WA_TXW_VENDOR_STR-ZTERM sy-vline 
WA_TXW_VENDOR_STR-ERDAT sy-vline 
WA_TXW_VENDOR_STR-FISKU sy-vline 
WA_TXW_VENDOR_STR-STENR sy-vline 
WA_TXW_VENDOR_STR-ERNAM sy-vline 
WA_TXW_VENDOR_STR-ZWELS sy-vline 
WA_TXW_VENDOR_STR-UZAWE sy-vline 
WA_TXW_VENDOR_STR-HOUSE_NUM1 sy-vline 
WA_TXW_VENDOR_STR-HOUSE_NUM2 sy-vline 
WA_TXW_VENDOR_STR-NAME3 sy-vline 
WA_TXW_VENDOR_STR-NAME4 sy-vline 
WA_TXW_VENDOR_STR-STCD3 sy-vline 
WA_TXW_VENDOR_STR-STCD4 sy-vline 
WA_TXW_VENDOR_STR-STCD5 sy-vline 
WA_TXW_VENDOR_STR-STCD6 sy-vline      INTO ld_text SEPARATED BY SPACE.

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