ABAP Select data from SAP table BUHL into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP BUHL 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 BUHL. 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 BUHL 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_BUHL TYPE STANDARD TABLE OF BUHL,
      WA_BUHL TYPE BUHL,
      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: <BUHL> TYPE BUHL.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BUHL
*  INTO TABLE @DATA(IT_BUHL2).
*--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_BUHL INDEX 1 INTO DATA(WA_BUHL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BUHL>-DOCYEAR = 1.
<BUHL>-DOCNR = 1.
<BUHL>-DOCLN = 1.
<BUHL>-DOCFAM = 1.
<BUHL>-FM_AREA = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BUHL-FUND, sy-vline,
  WA_BUHL-FUNDSCTR, sy-vline,
  WA_BUHL-CMMTITEM, sy-vline,
  WA_BUHL-FUNCAREA, sy-vline,
  WA_BUHL-USERDIM, sy-vline,
  WA_BUHL-GRANT_NBR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BUHL 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_BUHL 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_BUHL INTO WA_BUHL.


*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 GJAHR, internal->external for field DOCYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_BUHL-DOCYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BUHL-DOCYEAR.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit FMCIL, internal->external for field CMMTITEM
CALL FUNCTION 'CONVERSION_EXIT_FMCIL_OUTPUT'
  EXPORTING
    input =                      WA_BUHL-CMMTITEM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BUHL-CMMTITEM.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit GJAHR, internal->external for field FISCYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_BUHL-FISCYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BUHL-FISCYEAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field CEFFYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_BUHL-CEFFYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BUHL-CEFFYEAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit PERI7, internal->external for field PERIO7
CALL FUNCTION 'CONVERSION_EXIT_PERI7_OUTPUT'
  EXPORTING
    input =                      WA_BUHL-PERIO7
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BUHL-PERIO7.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit ALPHA, internal->external for field RCOMP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_BUHL-RCOMP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BUHL-RCOMP.
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_BUHL_STR, 
DOCYEAR TYPE STRING,
DOCNR TYPE STRING,
DOCLN TYPE STRING,
DOCFAM TYPE STRING,
FM_AREA TYPE STRING,
FUND TYPE STRING,
FUNDSCTR TYPE STRING,
CMMTITEM TYPE STRING,
FUNCAREA TYPE STRING,
USERDIM TYPE STRING,
GRANT_NBR TYPE STRING,
MEASURE TYPE STRING,
BUDCAT TYPE STRING,
VALTYPE TYPE STRING,
PROCESS TYPE STRING,
BUDTYPE TYPE STRING,
CTEM_CATEGORY TYPE STRING,
FISCYEAR TYPE STRING,
CEFFYEAR TYPE STRING,
PERIO TYPE STRING,
PERIO7 TYPE STRING,
TECHORG TYPE STRING,
PROCESS_UI TYPE STRING,
VERSION TYPE STRING,
DOCDATE TYPE STRING,
POSTDATE TYPE STRING,
RESPPERS TYPE STRING,
HTEXT TYPE STRING,
TEXTNAME TYPE STRING,
LTEXT TYPE STRING,
DOCSTATE TYPE STRING,
REVSTATE TYPE STRING,
REV_REFNR TYPE STRING,
DOCTYPE TYPE STRING,
COHORT TYPE STRING,
PUBLAW TYPE STRING,
LEGIS TYPE STRING,
AWORG TYPE STRING,
AWREF TYPE STRING,
AWSYS TYPE STRING,
AWTYP TYPE STRING,
XBLNR TYPE STRING,
FWAER TYPE STRING,
HAMOUNT TYPE STRING,
TWAER TYPE STRING,
TAMOUNT TYPE STRING,
CRTUSER TYPE STRING,
CRTDATE TYPE STRING,
CRTTIME TYPE STRING,
BUDCAT_TXT TYPE STRING,
VALTYPE_TXT TYPE STRING,
PROCESS_TXT TYPE STRING,
BUDTYPE_TXT TYPE STRING,
DOCTYPE_TXT TYPE STRING,
DOCSTATE_TXT TYPE STRING,
REVSTATE_TXT TYPE STRING,
TRANSFER_AGENCY TYPE STRING,
TRANSFER_ACCOUNT TYPE STRING,
RCOMP TYPE STRING,
BUDGET_PD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BUHL_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_BUHL_STR-DOCYEAR sy-vline 
WA_BUHL_STR-DOCNR sy-vline 
WA_BUHL_STR-DOCLN sy-vline 
WA_BUHL_STR-DOCFAM sy-vline 
WA_BUHL_STR-FM_AREA sy-vline 
WA_BUHL_STR-FUND sy-vline 
WA_BUHL_STR-FUNDSCTR sy-vline 
WA_BUHL_STR-CMMTITEM sy-vline 
WA_BUHL_STR-FUNCAREA sy-vline 
WA_BUHL_STR-USERDIM sy-vline 
WA_BUHL_STR-GRANT_NBR sy-vline 
WA_BUHL_STR-MEASURE sy-vline 
WA_BUHL_STR-BUDCAT sy-vline 
WA_BUHL_STR-VALTYPE sy-vline 
WA_BUHL_STR-PROCESS sy-vline 
WA_BUHL_STR-BUDTYPE sy-vline 
WA_BUHL_STR-CTEM_CATEGORY sy-vline 
WA_BUHL_STR-FISCYEAR sy-vline 
WA_BUHL_STR-CEFFYEAR sy-vline 
WA_BUHL_STR-PERIO sy-vline 
WA_BUHL_STR-PERIO7 sy-vline 
WA_BUHL_STR-TECHORG sy-vline 
WA_BUHL_STR-PROCESS_UI sy-vline 
WA_BUHL_STR-VERSION sy-vline 
WA_BUHL_STR-DOCDATE sy-vline 
WA_BUHL_STR-POSTDATE sy-vline 
WA_BUHL_STR-RESPPERS sy-vline 
WA_BUHL_STR-HTEXT sy-vline 
WA_BUHL_STR-TEXTNAME sy-vline 
WA_BUHL_STR-LTEXT sy-vline 
WA_BUHL_STR-DOCSTATE sy-vline 
WA_BUHL_STR-REVSTATE sy-vline 
WA_BUHL_STR-REV_REFNR sy-vline 
WA_BUHL_STR-DOCTYPE sy-vline 
WA_BUHL_STR-COHORT sy-vline 
WA_BUHL_STR-PUBLAW sy-vline 
WA_BUHL_STR-LEGIS sy-vline 
WA_BUHL_STR-AWORG sy-vline 
WA_BUHL_STR-AWREF sy-vline 
WA_BUHL_STR-AWSYS sy-vline 
WA_BUHL_STR-AWTYP sy-vline 
WA_BUHL_STR-XBLNR sy-vline 
WA_BUHL_STR-FWAER sy-vline 
WA_BUHL_STR-HAMOUNT sy-vline 
WA_BUHL_STR-TWAER sy-vline 
WA_BUHL_STR-TAMOUNT sy-vline 
WA_BUHL_STR-CRTUSER sy-vline 
WA_BUHL_STR-CRTDATE sy-vline 
WA_BUHL_STR-CRTTIME sy-vline 
WA_BUHL_STR-BUDCAT_TXT sy-vline 
WA_BUHL_STR-VALTYPE_TXT sy-vline 
WA_BUHL_STR-PROCESS_TXT sy-vline 
WA_BUHL_STR-BUDTYPE_TXT sy-vline 
WA_BUHL_STR-DOCTYPE_TXT sy-vline 
WA_BUHL_STR-DOCSTATE_TXT sy-vline 
WA_BUHL_STR-REVSTATE_TXT sy-vline 
WA_BUHL_STR-TRANSFER_AGENCY sy-vline 
WA_BUHL_STR-TRANSFER_ACCOUNT sy-vline 
WA_BUHL_STR-RCOMP sy-vline 
WA_BUHL_STR-BUDGET_PD sy-vline      INTO ld_text SEPARATED BY SPACE.

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