ABAP Select data from SAP table PCO_PIA_PER into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PCO_PIA_PER
*  INTO TABLE @DATA(IT_PCO_PIA_PER2).
*--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_PCO_PIA_PER INDEX 1 INTO DATA(WA_PCO_PIA_PER2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PCO_PIA_PER>-IDREG = 1.
<PCO_PIA_PER>-SEQNR = 1.
<PCO_PIA_PER>-NACHN = 1.
<PCO_PIA_PER>-NACH2 = 1.
<PCO_PIA_PER>-VORNA = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PCO_PIA_PER-NAME2, sy-vline,
  WA_PCO_PIA_PER-ICTYP, sy-vline,
  WA_PCO_PIA_PER-ICNUM, sy-vline,
  WA_PCO_PIA_PER-TYPPE, sy-vline,
  WA_PCO_PIA_PER-PENCO, sy-vline,
  WA_PCO_PIA_PER-FIRAC, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PCO_PIA_PER 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_PCO_PIA_PER 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_PCO_PIA_PER INTO WA_PCO_PIA_PER.


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

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field ESCCF
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PCO_PIA_PER-ESCCF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PCO_PIA_PER-ESCCF.
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_PCO_PIA_PER_STR, 
IDREG TYPE STRING,
SEQNR TYPE STRING,
NACHN TYPE STRING,
NACH2 TYPE STRING,
VORNA TYPE STRING,
NAME2 TYPE STRING,
ICTYP TYPE STRING,
ICNUM TYPE STRING,
TYPPE TYPE STRING,
PENCO TYPE STRING,
FIRAC TYPE STRING,
SECAC TYPE STRING,
FIRNC TYPE STRING,
SECNC TYPE STRING,
ICTYC TYPE STRING,
ICNUC TYPE STRING,
PENTY TYPE STRING,
PEREX TYPE STRING,
BLAND TYPE STRING,
CITYC TYPE STRING,
PAGEX TYPE STRING,
NVING TYPE STRING,
NVRET TYPE STRING,
NVTDE TYPE STRING,
NVTAE TYPE STRING,
NVTDP TYPE STRING,
NVTAP TYPE STRING,
NVVSP TYPE STRING,
NVSUS TYPE STRING,
ENAFP TYPE STRING,
NEAFP TYPE STRING,
ENEPS TYPE STRING,
NEEPS TYPE STRING,
ECAJA TYPE STRING,
DYAFP TYPE STRING,
DYFSP TYPE STRING,
DYEPS TYPE STRING,
DYCCF TYPE STRING,
BTMPE TYPE STRING,
PEAFP TYPE STRING,
BTAFP TYPE STRING,
BTAVP TYPE STRING,
BTTOT TYPE STRING,
BTVNR TYPE STRING,
BTFSS TYPE STRING,
BTSUB TYPE STRING,
BTASB TYPE STRING,
PEEPS TYPE STRING,
BTEPS TYPE STRING,
BTUPC TYPE STRING,
PECAJ TYPE STRING,
BTCAJ TYPE STRING,
WAERS TYPE STRING,
PERNR TYPE STRING,
BUKRS TYPE STRING,
BRANC TYPE STRING,
ESAFP TYPE STRING,
ESEPS TYPE STRING,
ESCCF TYPE STRING,
ORDEN TYPE STRING,
ENAFPT TYPE STRING,
ENEPST TYPE STRING,
ECAJAT TYPE STRING,
ENARPT TYPE STRING,
TYPID TYPE STRING,
NUMID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PCO_PIA_PER_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_PCO_PIA_PER_STR-IDREG sy-vline 
WA_PCO_PIA_PER_STR-SEQNR sy-vline 
WA_PCO_PIA_PER_STR-NACHN sy-vline 
WA_PCO_PIA_PER_STR-NACH2 sy-vline 
WA_PCO_PIA_PER_STR-VORNA sy-vline 
WA_PCO_PIA_PER_STR-NAME2 sy-vline 
WA_PCO_PIA_PER_STR-ICTYP sy-vline 
WA_PCO_PIA_PER_STR-ICNUM sy-vline 
WA_PCO_PIA_PER_STR-TYPPE sy-vline 
WA_PCO_PIA_PER_STR-PENCO sy-vline 
WA_PCO_PIA_PER_STR-FIRAC sy-vline 
WA_PCO_PIA_PER_STR-SECAC sy-vline 
WA_PCO_PIA_PER_STR-FIRNC sy-vline 
WA_PCO_PIA_PER_STR-SECNC sy-vline 
WA_PCO_PIA_PER_STR-ICTYC sy-vline 
WA_PCO_PIA_PER_STR-ICNUC sy-vline 
WA_PCO_PIA_PER_STR-PENTY sy-vline 
WA_PCO_PIA_PER_STR-PEREX sy-vline 
WA_PCO_PIA_PER_STR-BLAND sy-vline 
WA_PCO_PIA_PER_STR-CITYC sy-vline 
WA_PCO_PIA_PER_STR-PAGEX sy-vline 
WA_PCO_PIA_PER_STR-NVING sy-vline 
WA_PCO_PIA_PER_STR-NVRET sy-vline 
WA_PCO_PIA_PER_STR-NVTDE sy-vline 
WA_PCO_PIA_PER_STR-NVTAE sy-vline 
WA_PCO_PIA_PER_STR-NVTDP sy-vline 
WA_PCO_PIA_PER_STR-NVTAP sy-vline 
WA_PCO_PIA_PER_STR-NVVSP sy-vline 
WA_PCO_PIA_PER_STR-NVSUS sy-vline 
WA_PCO_PIA_PER_STR-ENAFP sy-vline 
WA_PCO_PIA_PER_STR-NEAFP sy-vline 
WA_PCO_PIA_PER_STR-ENEPS sy-vline 
WA_PCO_PIA_PER_STR-NEEPS sy-vline 
WA_PCO_PIA_PER_STR-ECAJA sy-vline 
WA_PCO_PIA_PER_STR-DYAFP sy-vline 
WA_PCO_PIA_PER_STR-DYFSP sy-vline 
WA_PCO_PIA_PER_STR-DYEPS sy-vline 
WA_PCO_PIA_PER_STR-DYCCF sy-vline 
WA_PCO_PIA_PER_STR-BTMPE sy-vline 
WA_PCO_PIA_PER_STR-PEAFP sy-vline 
WA_PCO_PIA_PER_STR-BTAFP sy-vline 
WA_PCO_PIA_PER_STR-BTAVP sy-vline 
WA_PCO_PIA_PER_STR-BTTOT sy-vline 
WA_PCO_PIA_PER_STR-BTVNR sy-vline 
WA_PCO_PIA_PER_STR-BTFSS sy-vline 
WA_PCO_PIA_PER_STR-BTSUB sy-vline 
WA_PCO_PIA_PER_STR-BTASB sy-vline 
WA_PCO_PIA_PER_STR-PEEPS sy-vline 
WA_PCO_PIA_PER_STR-BTEPS sy-vline 
WA_PCO_PIA_PER_STR-BTUPC sy-vline 
WA_PCO_PIA_PER_STR-PECAJ sy-vline 
WA_PCO_PIA_PER_STR-BTCAJ sy-vline 
WA_PCO_PIA_PER_STR-WAERS sy-vline 
WA_PCO_PIA_PER_STR-PERNR sy-vline 
WA_PCO_PIA_PER_STR-BUKRS sy-vline 
WA_PCO_PIA_PER_STR-BRANC sy-vline 
WA_PCO_PIA_PER_STR-ESAFP sy-vline 
WA_PCO_PIA_PER_STR-ESEPS sy-vline 
WA_PCO_PIA_PER_STR-ESCCF sy-vline 
WA_PCO_PIA_PER_STR-ORDEN sy-vline 
WA_PCO_PIA_PER_STR-ENAFPT sy-vline 
WA_PCO_PIA_PER_STR-ENEPST sy-vline 
WA_PCO_PIA_PER_STR-ECAJAT sy-vline 
WA_PCO_PIA_PER_STR-ENARPT sy-vline 
WA_PCO_PIA_PER_STR-TYPID sy-vline 
WA_PCO_PIA_PER_STR-NUMID sy-vline      INTO ld_text SEPARATED BY SPACE.

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