ABAP Select data from SAP table TXI_TKB1A into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP TXI_TKB1A 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 TXI_TKB1A. 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 TXI_TKB1A 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_TXI_TKB1A TYPE STANDARD TABLE OF TXI_TKB1A,
      WA_TXI_TKB1A TYPE TXI_TKB1A,
      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: <TXI_TKB1A> TYPE TXI_TKB1A.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_TXI_TKB1A.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM TXI_TKB1A
  INTO TABLE IT_TXI_TKB1A.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TXI_TKB1A
*  INTO TABLE @DATA(IT_TXI_TKB1A2).
*--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_TXI_TKB1A INDEX 1 INTO DATA(WA_TXI_TKB1A2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_TXI_TKB1A ASSIGNING <TXI_TKB1A>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TXI_TKB1A>-MANDT = 1.
<TXI_TKB1A>-APROF = 1.
<TXI_TKB1A>-PREIS = 1.
<TXI_TKB1A>-EPUPD = 1.
<TXI_TKB1A>-HPROZ = 1.

ENDLOOP.

LOOP AT IT_TXI_TKB1A INTO WA_TXI_TKB1A.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TXI_TKB1A-MAXBR, sy-vline,
  WA_TXI_TKB1A-BETRA, sy-vline,
  WA_TXI_TKB1A-MENGE, sy-vline,
  WA_TXI_TKB1A-PROZE, sy-vline,
  WA_TXI_TKB1A-AQZIF, sy-vline,
  WA_TXI_TKB1A-ABSCH, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TXI_TKB1A 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_TXI_TKB1A 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_TXI_TKB1A INTO WA_TXI_TKB1A.


*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 APROF
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TXI_TKB1A-APROF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TXI_TKB1A-APROF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field URSCH
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TXI_TKB1A-URSCH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TXI_TKB1A-URSCH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit OBART, internal->external for field KOVOR
CALL FUNCTION 'CONVERSION_EXIT_OBART_OUTPUT'
  EXPORTING
    input =                      WA_TXI_TKB1A-KOVOR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TXI_TKB1A-KOVOR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ERSCH
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TXI_TKB1A-ERSCH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TXI_TKB1A-ERSCH.
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_TXI_TKB1A_STR, 
MANDT TYPE STRING,
APROF TYPE STRING,
PREIS TYPE STRING,
EPUPD TYPE STRING,
HPROZ TYPE STRING,
MAXBR TYPE STRING,
BETRA TYPE STRING,
MENGE TYPE STRING,
PROZE TYPE STRING,
AQZIF TYPE STRING,
ABSCH TYPE STRING,
URSCH TYPE STRING,
KOVOR TYPE STRING,
ABSAK TYPE STRING,
ABKST TYPE STRING,
ABAUF TYPE STRING,
ABPRO TYPE STRING,
ABANL TYPE STRING,
ABMAT TYPE STRING,
ABNVG TYPE STRING,
ABBOB TYPE STRING,
ABPRC TYPE STRING,
ABIMM TYPE STRING,
BLART TYPE STRING,
RESAU TYPE STRING,
ERSCH TYPE STRING,
RIFIND TYPE STRING,
FM_DERIVE TYPE STRING,
HBSCHL TYPE STRING,
SBSCHL TYPE STRING,
VARIA TYPE STRING,
ABKTR TYPE STRING,
ABPRZ TYPE STRING,
ABAUP TYPE STRING,
ABRIST TYPE STRING,
ABRDOWNPAY TYPE STRING,
FM_DERIVE_FONDS TYPE STRING,
FM_DERIVE_FKBER TYPE STRING,
FM_DERIVE_GRANT TYPE STRING,
ADDCURR TYPE STRING,
NO_SRC_CE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TXI_TKB1A_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_TXI_TKB1A_STR-MANDT sy-vline 
WA_TXI_TKB1A_STR-APROF sy-vline 
WA_TXI_TKB1A_STR-PREIS sy-vline 
WA_TXI_TKB1A_STR-EPUPD sy-vline 
WA_TXI_TKB1A_STR-HPROZ sy-vline 
WA_TXI_TKB1A_STR-MAXBR sy-vline 
WA_TXI_TKB1A_STR-BETRA sy-vline 
WA_TXI_TKB1A_STR-MENGE sy-vline 
WA_TXI_TKB1A_STR-PROZE sy-vline 
WA_TXI_TKB1A_STR-AQZIF sy-vline 
WA_TXI_TKB1A_STR-ABSCH sy-vline 
WA_TXI_TKB1A_STR-URSCH sy-vline 
WA_TXI_TKB1A_STR-KOVOR sy-vline 
WA_TXI_TKB1A_STR-ABSAK sy-vline 
WA_TXI_TKB1A_STR-ABKST sy-vline 
WA_TXI_TKB1A_STR-ABAUF sy-vline 
WA_TXI_TKB1A_STR-ABPRO sy-vline 
WA_TXI_TKB1A_STR-ABANL sy-vline 
WA_TXI_TKB1A_STR-ABMAT sy-vline 
WA_TXI_TKB1A_STR-ABNVG sy-vline 
WA_TXI_TKB1A_STR-ABBOB sy-vline 
WA_TXI_TKB1A_STR-ABPRC sy-vline 
WA_TXI_TKB1A_STR-ABIMM sy-vline 
WA_TXI_TKB1A_STR-BLART sy-vline 
WA_TXI_TKB1A_STR-RESAU sy-vline 
WA_TXI_TKB1A_STR-ERSCH sy-vline 
WA_TXI_TKB1A_STR-RIFIND sy-vline 
WA_TXI_TKB1A_STR-FM_DERIVE sy-vline 
WA_TXI_TKB1A_STR-HBSCHL sy-vline 
WA_TXI_TKB1A_STR-SBSCHL sy-vline 
WA_TXI_TKB1A_STR-VARIA sy-vline 
WA_TXI_TKB1A_STR-ABKTR sy-vline 
WA_TXI_TKB1A_STR-ABPRZ sy-vline 
WA_TXI_TKB1A_STR-ABAUP sy-vline 
WA_TXI_TKB1A_STR-ABRIST sy-vline 
WA_TXI_TKB1A_STR-ABRDOWNPAY sy-vline 
WA_TXI_TKB1A_STR-FM_DERIVE_FONDS sy-vline 
WA_TXI_TKB1A_STR-FM_DERIVE_FKBER sy-vline 
WA_TXI_TKB1A_STR-FM_DERIVE_GRANT sy-vline 
WA_TXI_TKB1A_STR-ADDCURR sy-vline 
WA_TXI_TKB1A_STR-NO_SRC_CE sy-vline      INTO ld_text SEPARATED BY SPACE.

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