ABAP Select data from SAP table P21_0021COP into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P21_0021COP 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 P21_0021COP. 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 P21_0021COP 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_P21_0021COP TYPE STANDARD TABLE OF P21_0021COP,
      WA_P21_0021COP TYPE P21_0021COP,
      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: <P21_0021COP> TYPE P21_0021COP.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P21_0021COP.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P21_0021COP
  INTO TABLE IT_P21_0021COP.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P21_0021COP
*  INTO TABLE @DATA(IT_P21_0021COP2).
*--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_P21_0021COP INDEX 1 INTO DATA(WA_P21_0021COP2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P21_0021COP ASSIGNING <P21_0021COP>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P21_0021COP>-PERNR = 1.
<P21_0021COP>-BUKRS = 1.
<P21_0021COP>-WERKS = 1.
<P21_0021COP>-PERSG = 1.
<P21_0021COP>-PERSK = 1.

ENDLOOP.

LOOP AT IT_P21_0021COP INTO WA_P21_0021COP.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P21_0021COP-VDSK1, sy-vline,
  WA_P21_0021COP-GSBER, sy-vline,
  WA_P21_0021COP-BTRTL, sy-vline,
  WA_P21_0021COP-JUPER, sy-vline,
  WA_P21_0021COP-ABKRS, sy-vline,
  WA_P21_0021COP-ANSVH, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P21_0021COP 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_P21_0021COP 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_P21_0021COP INTO WA_P21_0021COP.


*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 KOSTL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_P21_0021COP-KOSTL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_P21_0021COP-KOSTL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field GRANT_NBR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_P21_0021COP-GRANT_NBR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_P21_0021COP-GRANT_NBR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SGMNT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_P21_0021COP-SGMNT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_P21_0021COP-SGMNT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit PDATE, internal->external for field FGBDT
CALL FUNCTION 'CONVERSION_EXIT_PDATE_OUTPUT'
  EXPORTING
    input =                      WA_P21_0021COP-FGBDT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_P21_0021COP-FGBDT.
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_P21_0021COP_STR, 
PERNR TYPE STRING,
BUKRS TYPE STRING,
WERKS TYPE STRING,
PERSG TYPE STRING,
PERSK TYPE STRING,
VDSK1 TYPE STRING,
GSBER TYPE STRING,
BTRTL TYPE STRING,
JUPER TYPE STRING,
ABKRS TYPE STRING,
ANSVH TYPE STRING,
KOSTL TYPE STRING,
ORGEH TYPE STRING,
PLANS TYPE STRING,
STELL TYPE STRING,
MSTBR TYPE STRING,
SACHA TYPE STRING,
SACHP TYPE STRING,
SACHZ TYPE STRING,
SNAME TYPE STRING,
ENAME TYPE STRING,
OTYPE TYPE STRING,
SBMOD TYPE STRING,
KOKRS TYPE STRING,
FISTL TYPE STRING,
GEBER TYPE STRING,
FKBER TYPE STRING,
GRANT_NBR TYPE STRING,
SGMNT TYPE STRING,
BUDGET_PD TYPE STRING,
BUKRS_TX TYPE STRING,
WERKS_TX TYPE STRING,
BTRTL_TX TYPE STRING,
PERSG_TX TYPE STRING,
PERSK_TX TYPE STRING,
KOSTL_TX TYPE STRING,
ABKRS_TX TYPE STRING,
ANSVH_TX TYPE STRING,
GSBER_TX TYPE STRING,
ORGEH_TX TYPE STRING,
PLANS_TX TYPE STRING,
STELL_TX TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
FAMSA TYPE STRING,
OBJPS TYPE STRING,
SVNUM TYPE STRING,
SVKNR TYPE STRING,
FGBDT TYPE STRING,
FANAM TYPE STRING,
FAVOR TYPE STRING,
ADOKD TYPE STRING,
ELEVF TYPE STRING,
CSKJC TYPE STRING,
EKHSZ TYPE STRING,
UZENET TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P21_0021COP_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_P21_0021COP_STR-PERNR sy-vline 
WA_P21_0021COP_STR-BUKRS sy-vline 
WA_P21_0021COP_STR-WERKS sy-vline 
WA_P21_0021COP_STR-PERSG sy-vline 
WA_P21_0021COP_STR-PERSK sy-vline 
WA_P21_0021COP_STR-VDSK1 sy-vline 
WA_P21_0021COP_STR-GSBER sy-vline 
WA_P21_0021COP_STR-BTRTL sy-vline 
WA_P21_0021COP_STR-JUPER sy-vline 
WA_P21_0021COP_STR-ABKRS sy-vline 
WA_P21_0021COP_STR-ANSVH sy-vline 
WA_P21_0021COP_STR-KOSTL sy-vline 
WA_P21_0021COP_STR-ORGEH sy-vline 
WA_P21_0021COP_STR-PLANS sy-vline 
WA_P21_0021COP_STR-STELL sy-vline 
WA_P21_0021COP_STR-MSTBR sy-vline 
WA_P21_0021COP_STR-SACHA sy-vline 
WA_P21_0021COP_STR-SACHP sy-vline 
WA_P21_0021COP_STR-SACHZ sy-vline 
WA_P21_0021COP_STR-SNAME sy-vline 
WA_P21_0021COP_STR-ENAME sy-vline 
WA_P21_0021COP_STR-OTYPE sy-vline 
WA_P21_0021COP_STR-SBMOD sy-vline 
WA_P21_0021COP_STR-KOKRS sy-vline 
WA_P21_0021COP_STR-FISTL sy-vline 
WA_P21_0021COP_STR-GEBER sy-vline 
WA_P21_0021COP_STR-FKBER sy-vline 
WA_P21_0021COP_STR-GRANT_NBR sy-vline 
WA_P21_0021COP_STR-SGMNT sy-vline 
WA_P21_0021COP_STR-BUDGET_PD sy-vline 
WA_P21_0021COP_STR-BUKRS_TX sy-vline 
WA_P21_0021COP_STR-WERKS_TX sy-vline 
WA_P21_0021COP_STR-BTRTL_TX sy-vline 
WA_P21_0021COP_STR-PERSG_TX sy-vline 
WA_P21_0021COP_STR-PERSK_TX sy-vline 
WA_P21_0021COP_STR-KOSTL_TX sy-vline 
WA_P21_0021COP_STR-ABKRS_TX sy-vline 
WA_P21_0021COP_STR-ANSVH_TX sy-vline 
WA_P21_0021COP_STR-GSBER_TX sy-vline 
WA_P21_0021COP_STR-ORGEH_TX sy-vline 
WA_P21_0021COP_STR-PLANS_TX sy-vline 
WA_P21_0021COP_STR-STELL_TX sy-vline 
WA_P21_0021COP_STR-BEGDA sy-vline 
WA_P21_0021COP_STR-ENDDA sy-vline 
WA_P21_0021COP_STR-FAMSA sy-vline 
WA_P21_0021COP_STR-OBJPS sy-vline 
WA_P21_0021COP_STR-SVNUM sy-vline 
WA_P21_0021COP_STR-SVKNR sy-vline 
WA_P21_0021COP_STR-FGBDT sy-vline 
WA_P21_0021COP_STR-FANAM sy-vline 
WA_P21_0021COP_STR-FAVOR sy-vline 
WA_P21_0021COP_STR-ADOKD sy-vline 
WA_P21_0021COP_STR-ELEVF sy-vline 
WA_P21_0021COP_STR-CSKJC sy-vline 
WA_P21_0021COP_STR-EKHSZ sy-vline 
WA_P21_0021COP_STR-UZENET sy-vline      INTO ld_text SEPARATED BY SPACE.

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