ABAP Select data from SAP table U_26149 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP U_26149 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 U_26149. 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 U_26149 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_U_26149 TYPE STANDARD TABLE OF U_26149,
      WA_U_26149 TYPE U_26149,
      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: <U_26149> TYPE U_26149.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_U_26149.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM U_26149
  INTO TABLE IT_U_26149.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM U_26149
*  INTO TABLE @DATA(IT_U_261492).
*--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_U_26149 INDEX 1 INTO DATA(WA_U_261492).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_U_26149 ASSIGNING <U_26149>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<U_26149>-MANDT = 1.
<U_26149>-VBELN = 1.
<U_26149>-POSNR = 1.
<U_26149>-PSTYV = 1.
<U_26149>-ERNAM = 1.

ENDLOOP.

LOOP AT IT_U_26149 INTO WA_U_26149.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_U_26149-ERZET, sy-vline,
  WA_U_26149-ERDAT, sy-vline,
  WA_U_26149-MATNR, sy-vline,
  WA_U_26149-WERKS, sy-vline,
  WA_U_26149-MEINS, sy-vline,
  WA_U_26149-LFIMG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_U_26149 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_U_26149 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_U_26149 INTO WA_U_26149.


*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 VBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_U_26149-VBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_U_26149-VBELN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_U_26149-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_U_26149-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_U_26149-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_U_26149-MEINS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field VRKME
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_U_26149-VRKME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_U_26149-VRKME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field GEWEI
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_U_26149-GEWEI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_U_26149-GEWEI.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field VOLEH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_U_26149-VOLEH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_U_26149-VOLEH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VGBEL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_U_26149-VGBEL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_U_26149-VGBEL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AKTNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_U_26149-AKTNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_U_26149-AKTNR.
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_U_26149_STR, 
MANDT TYPE STRING,
VBELN TYPE STRING,
POSNR TYPE STRING,
PSTYV TYPE STRING,
ERNAM TYPE STRING,
ERZET TYPE STRING,
ERDAT TYPE STRING,
MATNR TYPE STRING,
WERKS TYPE STRING,
MEINS TYPE STRING,
LFIMG TYPE STRING,
UMVKZ TYPE STRING,
VRKME TYPE STRING,
UMVKN TYPE STRING,
NTGEW TYPE STRING,
BRGEW TYPE STRING,
GEWEI TYPE STRING,
VOLEH TYPE STRING,
VOLUM TYPE STRING,
LGORT TYPE STRING,
LGMNG TYPE STRING,
ARKTX TYPE STRING,
VGBEL TYPE STRING,
VGPOS TYPE STRING,
AEDAT TYPE STRING,
VGTYP TYPE STRING,
AKTNR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_U_26149_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_U_26149_STR-MANDT sy-vline 
WA_U_26149_STR-VBELN sy-vline 
WA_U_26149_STR-POSNR sy-vline 
WA_U_26149_STR-PSTYV sy-vline 
WA_U_26149_STR-ERNAM sy-vline 
WA_U_26149_STR-ERZET sy-vline 
WA_U_26149_STR-ERDAT sy-vline 
WA_U_26149_STR-MATNR sy-vline 
WA_U_26149_STR-WERKS sy-vline 
WA_U_26149_STR-MEINS sy-vline 
WA_U_26149_STR-LFIMG sy-vline 
WA_U_26149_STR-UMVKZ sy-vline 
WA_U_26149_STR-VRKME sy-vline 
WA_U_26149_STR-UMVKN sy-vline 
WA_U_26149_STR-NTGEW sy-vline 
WA_U_26149_STR-BRGEW sy-vline 
WA_U_26149_STR-GEWEI sy-vline 
WA_U_26149_STR-VOLEH sy-vline 
WA_U_26149_STR-VOLUM sy-vline 
WA_U_26149_STR-LGORT sy-vline 
WA_U_26149_STR-LGMNG sy-vline 
WA_U_26149_STR-ARKTX sy-vline 
WA_U_26149_STR-VGBEL sy-vline 
WA_U_26149_STR-VGPOS sy-vline 
WA_U_26149_STR-AEDAT sy-vline 
WA_U_26149_STR-VGTYP sy-vline 
WA_U_26149_STR-AKTNR sy-vline      INTO ld_text SEPARATED BY SPACE.

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