ABAP Select data from SAP table P2501 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P2501 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 P2501. 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 P2501 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_P2501 TYPE STANDARD TABLE OF P2501,
      WA_P2501 TYPE P2501,
      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: <P2501> TYPE P2501.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P2501.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P2501
  INTO TABLE IT_P2501.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P2501
*  INTO TABLE @DATA(IT_P25012).
*--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_P2501 INDEX 1 INTO DATA(WA_P25012).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P2501 ASSIGNING <P2501>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P2501>-PERNR = 1.
<P2501>-INFTY = 1.
<P2501>-SUBTY = 1.
<P2501>-OBJPS = 1.
<P2501>-SPRPS = 1.

ENDLOOP.

LOOP AT IT_P2501 INTO WA_P2501.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P2501-ENDDA, sy-vline,
  WA_P2501-BEGDA, sy-vline,
  WA_P2501-SEQNR, sy-vline,
  WA_P2501-AEDTM, sy-vline,
  WA_P2501-UNAME, sy-vline,
  WA_P2501-HISTO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P2501 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_P2501 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_P2501 INTO WA_P2501.


*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 COSTCENTER_WP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_P2501-COSTCENTER_WP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_P2501-COSTCENTER_WP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field GRANT_NBR_WP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_P2501-GRANT_NBR_WP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_P2501-GRANT_NBR_WP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KOSTL_CO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_P2501-KOSTL_CO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_P2501-KOSTL_CO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AUFNR_CO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_P2501-AUFNR_CO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_P2501-AUFNR_CO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSN, internal->external for field PS_POSID_CO
CALL FUNCTION 'CONVERSION_EXIT_ABPSN_OUTPUT'
  EXPORTING
    input =                      WA_P2501-PS_POSID_CO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_P2501-PS_POSID_CO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit NUMCV, internal->external for field VORNR_CO
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_P2501-VORNR_CO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_P2501-VORNR_CO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field NPLNR_CO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_P2501-NPLNR_CO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_P2501-NPLNR_CO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field GRANT_NBR_CO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_P2501-GRANT_NBR_CO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_P2501-GRANT_NBR_CO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KOSTL_AR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_P2501-KOSTL_AR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_P2501-KOSTL_AR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AUFNR_AR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_P2501-AUFNR_AR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_P2501-AUFNR_AR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSN, internal->external for field PS_POSID_AR
CALL FUNCTION 'CONVERSION_EXIT_ABPSN_OUTPUT'
  EXPORTING
    input =                      WA_P2501-PS_POSID_AR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_P2501-PS_POSID_AR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CO_PRZNR_AR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_P2501-CO_PRZNR_AR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_P2501-CO_PRZNR_AR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field NPLNR_AR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_P2501-NPLNR_AR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_P2501-NPLNR_AR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit NUMCV, internal->external for field VORNR_AR
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_P2501-VORNR_AR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_P2501-VORNR_AR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field GRANT_NBR_AR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_P2501-GRANT_NBR_AR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_P2501-GRANT_NBR_AR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KOSTL_AS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_P2501-KOSTL_AS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_P2501-KOSTL_AS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field GRANT_NBR_AS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_P2501-GRANT_NBR_AS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_P2501-GRANT_NBR_AS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_P2501-UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_P2501-UNIT.
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_P2501_STR, 
PERNR TYPE STRING,
INFTY TYPE STRING,
SUBTY TYPE STRING,
OBJPS TYPE STRING,
SPRPS TYPE STRING,
ENDDA TYPE STRING,
BEGDA TYPE STRING,
SEQNR TYPE STRING,
AEDTM TYPE STRING,
UNAME TYPE STRING,
HISTO TYPE STRING,
ITXEX TYPE STRING,
REFEX TYPE STRING,
ORDEX TYPE STRING,
ITBLD TYPE STRING,
PREAS TYPE STRING,
FLAG1 TYPE STRING,
FLAG2 TYPE STRING,
FLAG3 TYPE STRING,
FLAG4 TYPE STRING,
RESE1 TYPE STRING,
RESE2 TYPE STRING,
GRPVL TYPE STRING,
ORG_UNIT_WP TYPE STRING,
JOB_WP TYPE STRING,
POSITION_WP TYPE STRING,
PERS_AREA_WP TYPE STRING,
PERS_SUBAREA_WP TYPE STRING,
EMPL_GROUP_WP TYPE STRING,
EMPL_SUBGROUP_WP TYPE STRING,
CO_AREA_WP TYPE STRING,
COSTCENTER_WP TYPE STRING,
COMP_CODE_WP TYPE STRING,
BUS_AREA_WP TYPE STRING,
TIME_STATUS_WP TYPE STRING,
FM_AREA_WP TYPE STRING,
FUND_WP TYPE STRING,
FUNC_AREA_WP TYPE STRING,
GRANT_NBR_WP TYPE STRING,
FISTL_WP TYPE STRING,
BUDGET_PD_WP TYPE STRING,
BUKRS_CO TYPE STRING,
GSBER_CO TYPE STRING,
KOKRS_CO TYPE STRING,
KOSTL_CO TYPE STRING,
AUFNR_CO TYPE STRING,
PS_POSID_CO TYPE STRING,
LSTAR_CO TYPE STRING,
VORNR_CO TYPE STRING,
NPLNR_CO TYPE STRING,
FM_AREA_CO TYPE STRING,
FUND_CO TYPE STRING,
FUNC_AREA_CO TYPE STRING,
GRANT_NBR_CO TYPE STRING,
BUDGET_PD_CO TYPE STRING,
BUKRS_AR TYPE STRING,
GSBER_AR TYPE STRING,
KOSTL_AR TYPE STRING,
AUFNR_AR TYPE STRING,
PS_POSID_AR TYPE STRING,
CO_PRZNR_AR TYPE STRING,
NPLNR_AR TYPE STRING,
VORNR_AR TYPE STRING,
FUND_AR TYPE STRING,
FUNC_AREA_AR TYPE STRING,
GRANT_NBR_AR TYPE STRING,
BUDGET_PD_AR TYPE STRING,
BUKRS_AS TYPE STRING,
GSBER_AS TYPE STRING,
KOSTL_AS TYPE STRING,
LSTAR_AS TYPE STRING,
FUND_AS TYPE STRING,
FUNC_AREA_AS TYPE STRING,
GRANT_NBR_AS TYPE STRING,
BUDGET_PD_AS TYPE STRING,
ALP_POSITION TYPE STRING,
ALP_RATE TYPE STRING,
ALP_AMOUNT TYPE STRING,
ALP_CURRENCY TYPE STRING,
REPTT TYPE STRING,
DUR_ACTUAL TYPE STRING,
DUR_VALUE TYPE STRING,
UNIT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P2501_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_P2501_STR-PERNR sy-vline 
WA_P2501_STR-INFTY sy-vline 
WA_P2501_STR-SUBTY sy-vline 
WA_P2501_STR-OBJPS sy-vline 
WA_P2501_STR-SPRPS sy-vline 
WA_P2501_STR-ENDDA sy-vline 
WA_P2501_STR-BEGDA sy-vline 
WA_P2501_STR-SEQNR sy-vline 
WA_P2501_STR-AEDTM sy-vline 
WA_P2501_STR-UNAME sy-vline 
WA_P2501_STR-HISTO sy-vline 
WA_P2501_STR-ITXEX sy-vline 
WA_P2501_STR-REFEX sy-vline 
WA_P2501_STR-ORDEX sy-vline 
WA_P2501_STR-ITBLD sy-vline 
WA_P2501_STR-PREAS sy-vline 
WA_P2501_STR-FLAG1 sy-vline 
WA_P2501_STR-FLAG2 sy-vline 
WA_P2501_STR-FLAG3 sy-vline 
WA_P2501_STR-FLAG4 sy-vline 
WA_P2501_STR-RESE1 sy-vline 
WA_P2501_STR-RESE2 sy-vline 
WA_P2501_STR-GRPVL sy-vline 
WA_P2501_STR-ORG_UNIT_WP sy-vline 
WA_P2501_STR-JOB_WP sy-vline 
WA_P2501_STR-POSITION_WP sy-vline 
WA_P2501_STR-PERS_AREA_WP sy-vline 
WA_P2501_STR-PERS_SUBAREA_WP sy-vline 
WA_P2501_STR-EMPL_GROUP_WP sy-vline 
WA_P2501_STR-EMPL_SUBGROUP_WP sy-vline 
WA_P2501_STR-CO_AREA_WP sy-vline 
WA_P2501_STR-COSTCENTER_WP sy-vline 
WA_P2501_STR-COMP_CODE_WP sy-vline 
WA_P2501_STR-BUS_AREA_WP sy-vline 
WA_P2501_STR-TIME_STATUS_WP sy-vline 
WA_P2501_STR-FM_AREA_WP sy-vline 
WA_P2501_STR-FUND_WP sy-vline 
WA_P2501_STR-FUNC_AREA_WP sy-vline 
WA_P2501_STR-GRANT_NBR_WP sy-vline 
WA_P2501_STR-FISTL_WP sy-vline 
WA_P2501_STR-BUDGET_PD_WP sy-vline 
WA_P2501_STR-BUKRS_CO sy-vline 
WA_P2501_STR-GSBER_CO sy-vline 
WA_P2501_STR-KOKRS_CO sy-vline 
WA_P2501_STR-KOSTL_CO sy-vline 
WA_P2501_STR-AUFNR_CO sy-vline 
WA_P2501_STR-PS_POSID_CO sy-vline 
WA_P2501_STR-LSTAR_CO sy-vline 
WA_P2501_STR-VORNR_CO sy-vline 
WA_P2501_STR-NPLNR_CO sy-vline 
WA_P2501_STR-FM_AREA_CO sy-vline 
WA_P2501_STR-FUND_CO sy-vline 
WA_P2501_STR-FUNC_AREA_CO sy-vline 
WA_P2501_STR-GRANT_NBR_CO sy-vline 
WA_P2501_STR-BUDGET_PD_CO sy-vline 
WA_P2501_STR-BUKRS_AR sy-vline 
WA_P2501_STR-GSBER_AR sy-vline 
WA_P2501_STR-KOSTL_AR sy-vline 
WA_P2501_STR-AUFNR_AR sy-vline 
WA_P2501_STR-PS_POSID_AR sy-vline 
WA_P2501_STR-CO_PRZNR_AR sy-vline 
WA_P2501_STR-NPLNR_AR sy-vline 
WA_P2501_STR-VORNR_AR sy-vline 
WA_P2501_STR-FUND_AR sy-vline 
WA_P2501_STR-FUNC_AREA_AR sy-vline 
WA_P2501_STR-GRANT_NBR_AR sy-vline 
WA_P2501_STR-BUDGET_PD_AR sy-vline 
WA_P2501_STR-BUKRS_AS sy-vline 
WA_P2501_STR-GSBER_AS sy-vline 
WA_P2501_STR-KOSTL_AS sy-vline 
WA_P2501_STR-LSTAR_AS sy-vline 
WA_P2501_STR-FUND_AS sy-vline 
WA_P2501_STR-FUNC_AREA_AS sy-vline 
WA_P2501_STR-GRANT_NBR_AS sy-vline 
WA_P2501_STR-BUDGET_PD_AS sy-vline 
WA_P2501_STR-ALP_POSITION sy-vline 
WA_P2501_STR-ALP_RATE sy-vline 
WA_P2501_STR-ALP_AMOUNT sy-vline 
WA_P2501_STR-ALP_CURRENCY sy-vline 
WA_P2501_STR-REPTT sy-vline 
WA_P2501_STR-DUR_ACTUAL sy-vline 
WA_P2501_STR-DUR_VALUE sy-vline 
WA_P2501_STR-UNIT sy-vline      INTO ld_text SEPARATED BY SPACE.

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