ABAP Select data from SAP table TXW_DIRVF2 into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

Below is a number of ABAP code snippets to demonstrate how to select data from SAP TXW_DIRVF2 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_DIRVF2. 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_DIRVF2 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_DIRVF2 TYPE STANDARD TABLE OF TXW_DIRVF2,
      WA_TXW_DIRVF2 TYPE TXW_DIRVF2,
      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_DIRVF2> TYPE TXW_DIRVF2.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_TXW_DIRVF2.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM TXW_DIRVF2
  INTO TABLE IT_TXW_DIRVF2.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TXW_DIRVF2
*  INTO TABLE @DATA(IT_TXW_DIRVF22).
*--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_DIRVF2 INDEX 1 INTO DATA(WA_TXW_DIRVF22).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_TXW_DIRVF2 ASSIGNING <TXW_DIRVF2>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TXW_DIRVF2>-MANDT = 1.
<TXW_DIRVF2>-XTRCT_UUID = 1.
<TXW_DIRVF2>-VOL_ID = 1.
<TXW_DIRVF2>-DART_RL = 1.
<TXW_DIRVF2>-LOGSYS = 1.

ENDLOOP.

LOOP AT IT_TXW_DIRVF2 INTO WA_TXW_DIRVF2.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TXW_DIRVF2-EXTRACT_ID, sy-vline,
  WA_TXW_DIRVF2-ISOURCE, sy-vline,
  WA_TXW_DIRVF2-FISC_YEAR, sy-vline,
  WA_TXW_DIRVF2-REQUSER, sy-vline,
  WA_TXW_DIRVF2-SELDATE, sy-vline,
  WA_TXW_DIRVF2-SELTIME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TXW_DIRVF2 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_DIRVF2 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_DIRVF2 INTO WA_TXW_DIRVF2.


*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 LOGSYS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TXW_DIRVF2-LOGSYS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TXW_DIRVF2-LOGSYS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field FISC_YEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_TXW_DIRVF2-FISC_YEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TXW_DIRVF2-FISC_YEAR.
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_DIRVF2_STR, 
MANDT TYPE STRING,
XTRCT_UUID TYPE STRING,
VOL_ID TYPE STRING,
DART_RL TYPE STRING,
LOGSYS TYPE STRING,
EXTRACT_ID TYPE STRING,
ISOURCE TYPE STRING,
FISC_YEAR TYPE STRING,
REQUSER TYPE STRING,
SELDATE TYPE STRING,
SELTIME TYPE STRING,
SAPRL TYPE STRING,
TXTLG TYPE STRING,
DIRSEG_VOL TYPE STRING,
DIRSEG_ADR TYPE STRING,
FIRST_REC TYPE STRING,
LAST_REC TYPE STRING,
FILE_SIZE TYPE STRING,
FILE_NAME TYPE STRING,
NEXT_VOL TYPE STRING,
X_COMPRESS TYPE STRING,
L_FILE TYPE STRING,
VOL_SET TYPE STRING,
CHECK_SUM TYPE STRING,
DELIMITER TYPE STRING,
EOL_BYTES TYPE STRING,
TIME_SECS TYPE STRING,
HOST TYPE STRING,
X_ISO9660 TYPE STRING,
DELUSER TYPE STRING,
DELDATE TYPE STRING,
DELTIME TYPE STRING,
ALEUSER TYPE STRING,
ALEDATE TYPE STRING,
ALETIME TYPE STRING,
ALESTAT TYPE STRING,
ALIUSER TYPE STRING,
ALIDATE TYPE STRING,
ALITIME TYPE STRING,
ALISTAT TYPE STRING,
X_ALE TYPE STRING,
X_ALI TYPE STRING,
UNICODE_MODE TYPE STRING,
INDEX_RECLEN TYPE STRING,
CODEPAGE TYPE STRING,
BUKRS TYPE STRING,
AL_ZIP TYPE STRING,
USE_DB TYPE STRING,
ALI_LIGHT TYPE STRING,
ALE_LIGHT TYPE STRING,
DEL_LIGHT TYPE STRING,
FILE_SIZE_C TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TXW_DIRVF2_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_DIRVF2_STR-MANDT sy-vline 
WA_TXW_DIRVF2_STR-XTRCT_UUID sy-vline 
WA_TXW_DIRVF2_STR-VOL_ID sy-vline 
WA_TXW_DIRVF2_STR-DART_RL sy-vline 
WA_TXW_DIRVF2_STR-LOGSYS sy-vline 
WA_TXW_DIRVF2_STR-EXTRACT_ID sy-vline 
WA_TXW_DIRVF2_STR-ISOURCE sy-vline 
WA_TXW_DIRVF2_STR-FISC_YEAR sy-vline 
WA_TXW_DIRVF2_STR-REQUSER sy-vline 
WA_TXW_DIRVF2_STR-SELDATE sy-vline 
WA_TXW_DIRVF2_STR-SELTIME sy-vline 
WA_TXW_DIRVF2_STR-SAPRL sy-vline 
WA_TXW_DIRVF2_STR-TXTLG sy-vline 
WA_TXW_DIRVF2_STR-DIRSEG_VOL sy-vline 
WA_TXW_DIRVF2_STR-DIRSEG_ADR sy-vline 
WA_TXW_DIRVF2_STR-FIRST_REC sy-vline 
WA_TXW_DIRVF2_STR-LAST_REC sy-vline 
WA_TXW_DIRVF2_STR-FILE_SIZE sy-vline 
WA_TXW_DIRVF2_STR-FILE_NAME sy-vline 
WA_TXW_DIRVF2_STR-NEXT_VOL sy-vline 
WA_TXW_DIRVF2_STR-X_COMPRESS sy-vline 
WA_TXW_DIRVF2_STR-L_FILE sy-vline 
WA_TXW_DIRVF2_STR-VOL_SET sy-vline 
WA_TXW_DIRVF2_STR-CHECK_SUM sy-vline 
WA_TXW_DIRVF2_STR-DELIMITER sy-vline 
WA_TXW_DIRVF2_STR-EOL_BYTES sy-vline 
WA_TXW_DIRVF2_STR-TIME_SECS sy-vline 
WA_TXW_DIRVF2_STR-HOST sy-vline 
WA_TXW_DIRVF2_STR-X_ISO9660 sy-vline 
WA_TXW_DIRVF2_STR-DELUSER sy-vline 
WA_TXW_DIRVF2_STR-DELDATE sy-vline 
WA_TXW_DIRVF2_STR-DELTIME sy-vline 
WA_TXW_DIRVF2_STR-ALEUSER sy-vline 
WA_TXW_DIRVF2_STR-ALEDATE sy-vline 
WA_TXW_DIRVF2_STR-ALETIME sy-vline 
WA_TXW_DIRVF2_STR-ALESTAT sy-vline 
WA_TXW_DIRVF2_STR-ALIUSER sy-vline 
WA_TXW_DIRVF2_STR-ALIDATE sy-vline 
WA_TXW_DIRVF2_STR-ALITIME sy-vline 
WA_TXW_DIRVF2_STR-ALISTAT sy-vline 
WA_TXW_DIRVF2_STR-X_ALE sy-vline 
WA_TXW_DIRVF2_STR-X_ALI sy-vline 
WA_TXW_DIRVF2_STR-UNICODE_MODE sy-vline 
WA_TXW_DIRVF2_STR-INDEX_RECLEN sy-vline 
WA_TXW_DIRVF2_STR-CODEPAGE sy-vline 
WA_TXW_DIRVF2_STR-BUKRS sy-vline 
WA_TXW_DIRVF2_STR-AL_ZIP sy-vline 
WA_TXW_DIRVF2_STR-USE_DB sy-vline 
WA_TXW_DIRVF2_STR-ALI_LIGHT sy-vline 
WA_TXW_DIRVF2_STR-ALE_LIGHT sy-vline 
WA_TXW_DIRVF2_STR-DEL_LIGHT sy-vline 
WA_TXW_DIRVF2_STR-FILE_SIZE_C sy-vline      INTO ld_text SEPARATED BY SPACE.

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