ABAP Select data from SAP table KBLP_ACC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM KBLP_ACC
*  INTO TABLE @DATA(IT_KBLP_ACC2).
*--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_KBLP_ACC INDEX 1 INTO DATA(WA_KBLP_ACC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<KBLP_ACC>-BELNR = 1.
<KBLP_ACC>-BLPOS = 1.
<KBLP_ACC>-KSTAR = 1.
<KBLP_ACC>-FIPOS = 1.
<KBLP_ACC>-AUFNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_KBLP_ACC-KOSTL, sy-vline,
  WA_KBLP_ACC-PSPNR, sy-vline,
  WA_KBLP_ACC-FISTL, sy-vline,
  WA_KBLP_ACC-GEBER, sy-vline,
  WA_KBLP_ACC-MATNR, sy-vline,
  WA_KBLP_ACC-LIFNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_KBLP_ACC 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_KBLP_ACC 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_KBLP_ACC INTO WA_KBLP_ACC.


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

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

*Conversion exit FMCIS, internal->external for field FIPOS
CALL FUNCTION 'CONVERSION_EXIT_FMCIS_OUTPUT'
  EXPORTING
    input =                      WA_KBLP_ACC-FIPOS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KBLP_ACC-FIPOS.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ABPSP, internal->external for field PSPNR
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_KBLP_ACC-PSPNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KBLP_ACC-PSPNR.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit ABPSP, internal->external for field ERL_PSPNR
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_KBLP_ACC-ERL_PSPNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KBLP_ACC-ERL_PSPNR.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field GRANT_NBR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KBLP_ACC-GRANT_NBR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KBLP_ACC-GRANT_NBR.
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_KBLP_ACC_STR, 
BELNR TYPE STRING,
BLPOS TYPE STRING,
KSTAR TYPE STRING,
FIPOS TYPE STRING,
AUFNR TYPE STRING,
KOSTL TYPE STRING,
PSPNR TYPE STRING,
FISTL TYPE STRING,
GEBER TYPE STRING,
MATNR TYPE STRING,
LIFNR TYPE STRING,
ERLAR TYPE STRING,
ERL_PSPNR TYPE STRING,
AUFPL TYPE STRING,
SKOSTL TYPE STRING,
SAUFNR TYPE STRING,
NPLNR TYPE STRING,
LNRZA TYPE STRING,
SAKNR TYPE STRING,
KUNNR TYPE STRING,
FIPEX TYPE STRING,
FKBER TYPE STRING,
GRANT_NBR TYPE STRING,
BUDGET_PD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_KBLP_ACC_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_KBLP_ACC_STR-BELNR sy-vline 
WA_KBLP_ACC_STR-BLPOS sy-vline 
WA_KBLP_ACC_STR-KSTAR sy-vline 
WA_KBLP_ACC_STR-FIPOS sy-vline 
WA_KBLP_ACC_STR-AUFNR sy-vline 
WA_KBLP_ACC_STR-KOSTL sy-vline 
WA_KBLP_ACC_STR-PSPNR sy-vline 
WA_KBLP_ACC_STR-FISTL sy-vline 
WA_KBLP_ACC_STR-GEBER sy-vline 
WA_KBLP_ACC_STR-MATNR sy-vline 
WA_KBLP_ACC_STR-LIFNR sy-vline 
WA_KBLP_ACC_STR-ERLAR sy-vline 
WA_KBLP_ACC_STR-ERL_PSPNR sy-vline 
WA_KBLP_ACC_STR-AUFPL sy-vline 
WA_KBLP_ACC_STR-SKOSTL sy-vline 
WA_KBLP_ACC_STR-SAUFNR sy-vline 
WA_KBLP_ACC_STR-NPLNR sy-vline 
WA_KBLP_ACC_STR-LNRZA sy-vline 
WA_KBLP_ACC_STR-SAKNR sy-vline 
WA_KBLP_ACC_STR-KUNNR sy-vline 
WA_KBLP_ACC_STR-FIPEX sy-vline 
WA_KBLP_ACC_STR-FKBER sy-vline 
WA_KBLP_ACC_STR-GRANT_NBR sy-vline 
WA_KBLP_ACC_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.