ABAP Select data from SAP table TXW_PSRAV into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP TXW_PSRAV 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_PSRAV. 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_PSRAV 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_PSRAV TYPE STANDARD TABLE OF TXW_PSRAV,
      WA_TXW_PSRAV TYPE TXW_PSRAV,
      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_PSRAV> TYPE TXW_PSRAV.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TXW_PSRAV
*  INTO TABLE @DATA(IT_TXW_PSRAV2).
*--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_PSRAV INDEX 1 INTO DATA(WA_TXW_PSRAV2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TXW_PSRAV>-MANDT = 1.
<TXW_PSRAV>-KOKRS = 1.
<TXW_PSRAV>-VERSA = 1.
<TXW_PSRAV>-ABSBW = 1.
<TXW_PSRAV>-ABSPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TXW_PSRAV-RUNDZ, sy-vline,
  WA_TXW_PSRAV-SCHIC, sy-vline,
  WA_TXW_PSRAV-TRBVA, sy-vline,
  WA_TXW_PSRAV-KERLE, sy-vline,
  WA_TXW_PSRAV-KKSTE, sy-vline,
  WA_TXW_PSRAV-KGWBS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TXW_PSRAV 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_PSRAV 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_PSRAV INTO WA_TXW_PSRAV.


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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field KPROI
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TXW_PSRAV-KPROI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TXW_PSRAV-KPROI.
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_PSRAV_STR, 
MANDT TYPE STRING,
KOKRS TYPE STRING,
VERSA TYPE STRING,
ABSBW TYPE STRING,
ABSPE TYPE STRING,
RUNDZ TYPE STRING,
SCHIC TYPE STRING,
TRBVA TYPE STRING,
KERLE TYPE STRING,
KKSTE TYPE STRING,
KGWBS TYPE STRING,
KRDVB TYPE STRING,
KRDVV TYPE STRING,
KRDVW TYPE STRING,
KEBST TYPE STRING,
KEUBS TYPE STRING,
KGEWB TYPE STRING,
KGEWA TYPE STRING,
KVRLB TYPE STRING,
KVRLA TYPE STRING,
KVRLV TYPE STRING,
KKSTI TYPE STRING,
KPROI TYPE STRING,
RFLG1 TYPE STRING,
RFLG2 TYPE STRING,
RFLG3 TYPE STRING,
RFLG4 TYPE STRING,
RFLG5 TYPE STRING,
EZPOS TYPE STRING,
RFLG6 TYPE STRING,
ZOABG TYPE STRING,
FSABG TYPE STRING,
TEXTA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TXW_PSRAV_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_PSRAV_STR-MANDT sy-vline 
WA_TXW_PSRAV_STR-KOKRS sy-vline 
WA_TXW_PSRAV_STR-VERSA sy-vline 
WA_TXW_PSRAV_STR-ABSBW sy-vline 
WA_TXW_PSRAV_STR-ABSPE sy-vline 
WA_TXW_PSRAV_STR-RUNDZ sy-vline 
WA_TXW_PSRAV_STR-SCHIC sy-vline 
WA_TXW_PSRAV_STR-TRBVA sy-vline 
WA_TXW_PSRAV_STR-KERLE sy-vline 
WA_TXW_PSRAV_STR-KKSTE sy-vline 
WA_TXW_PSRAV_STR-KGWBS sy-vline 
WA_TXW_PSRAV_STR-KRDVB sy-vline 
WA_TXW_PSRAV_STR-KRDVV sy-vline 
WA_TXW_PSRAV_STR-KRDVW sy-vline 
WA_TXW_PSRAV_STR-KEBST sy-vline 
WA_TXW_PSRAV_STR-KEUBS sy-vline 
WA_TXW_PSRAV_STR-KGEWB sy-vline 
WA_TXW_PSRAV_STR-KGEWA sy-vline 
WA_TXW_PSRAV_STR-KVRLB sy-vline 
WA_TXW_PSRAV_STR-KVRLA sy-vline 
WA_TXW_PSRAV_STR-KVRLV sy-vline 
WA_TXW_PSRAV_STR-KKSTI sy-vline 
WA_TXW_PSRAV_STR-KPROI sy-vline 
WA_TXW_PSRAV_STR-RFLG1 sy-vline 
WA_TXW_PSRAV_STR-RFLG2 sy-vline 
WA_TXW_PSRAV_STR-RFLG3 sy-vline 
WA_TXW_PSRAV_STR-RFLG4 sy-vline 
WA_TXW_PSRAV_STR-RFLG5 sy-vline 
WA_TXW_PSRAV_STR-EZPOS sy-vline 
WA_TXW_PSRAV_STR-RFLG6 sy-vline 
WA_TXW_PSRAV_STR-ZOABG sy-vline 
WA_TXW_PSRAV_STR-FSABG sy-vline 
WA_TXW_PSRAV_STR-TEXTA sy-vline      INTO ld_text SEPARATED BY SPACE.

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