ABAP Select data from SAP table PC27Z into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PC27Z 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 PC27Z. 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 PC27Z 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_PC27Z TYPE STANDARD TABLE OF PC27Z,
      WA_PC27Z TYPE PC27Z,
      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: <PC27Z> TYPE PC27Z.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PC27Z.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PC27Z
  INTO TABLE IT_PC27Z.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PC27Z
*  INTO TABLE @DATA(IT_PC27Z2).
*--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_PC27Z INDEX 1 INTO DATA(WA_PC27Z2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PC27Z ASSIGNING <PC27Z>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PC27Z>-SEQNO = 1.
<PC27Z>-BEGDA = 1.
<PC27Z>-ENDDA = 1.
<PC27Z>-WERKS = 1.
<PC27Z>-BTRTL = 1.

ENDLOOP.

LOOP AT IT_PC27Z INTO WA_PC27Z.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PC27Z-NACHN, sy-vline,
  WA_PC27Z-VORNA, sy-vline,
  WA_PC27Z-NAMZU, sy-vline,
  WA_PC27Z-VORSW, sy-vline,
  WA_PC27Z-TITEL, sy-vline,
  WA_PC27Z-STRAS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PC27Z 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_PC27Z 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_PC27Z INTO WA_PC27Z.


*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 PDATE, internal->external for field GBDAT
CALL FUNCTION 'CONVERSION_EXIT_PDATE_OUTPUT'
  EXPORTING
    input =                      WA_PC27Z-GBDAT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PC27Z-GBDAT.
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_PC27Z_STR, 
SEQNO TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
WERKS TYPE STRING,
BTRTL TYPE STRING,
NACHN TYPE STRING,
VORNA TYPE STRING,
NAMZU TYPE STRING,
VORSW TYPE STRING,
TITEL TYPE STRING,
STRAS TYPE STRING,
PSTLZ TYPE STRING,
ORT01 TYPE STRING,
GBDAT TYPE STRING,
GBORT TYPE STRING,
RVNUM TYPE STRING,
GESCH TYPE STRING,
GBNAM TYPE STRING,
VSNUM TYPE STRING,
KTONR TYPE STRING,
VTSCH TYPE STRING,
VSBEG TYPE STRING,
TTART TYPE STRING,
BEART TYPE STRING,
SWTBE TYPE STRING,
ARBEG TYPE STRING,
AWGRD TYPE STRING,
TRWAZ TYPE STRING,
IRWAZ TYPE STRING,
ARGZU TYPE STRING,
VVZVE TYPE STRING,
BEZVE TYPE STRING,
ZWVER TYPE STRING,
ZVEID TYPE STRING,
NAMEK TYPE STRING,
NAMED TYPE STRING,
ENDVS TYPE STRING,
UAVBE TYPE STRING,
FLD01 TYPE STRING,
FLD02 TYPE STRING,
FLD03 TYPE STRING,
FLD04 TYPE STRING,
AGRND TYPE STRING,
AREND TYPE STRING,
WIEDE TYPE STRING,
LOEDA TYPE STRING,
FAMST TYPE STRING,
ANSKG TYPE STRING,
KZALT TYPE STRING,
RVPFL TYPE STRING,
STRSS TYPE STRING,
HAUSN TYPE STRING,
POSTF TYPE STRING,
LNDKZ TYPE STRING,
ARTNA TYPE STRING,
ARTAD TYPE STRING,
BUKRS TYPE STRING,
AREDE TYPE STRING,
AVKEN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PC27Z_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_PC27Z_STR-SEQNO sy-vline 
WA_PC27Z_STR-BEGDA sy-vline 
WA_PC27Z_STR-ENDDA sy-vline 
WA_PC27Z_STR-WERKS sy-vline 
WA_PC27Z_STR-BTRTL sy-vline 
WA_PC27Z_STR-NACHN sy-vline 
WA_PC27Z_STR-VORNA sy-vline 
WA_PC27Z_STR-NAMZU sy-vline 
WA_PC27Z_STR-VORSW sy-vline 
WA_PC27Z_STR-TITEL sy-vline 
WA_PC27Z_STR-STRAS sy-vline 
WA_PC27Z_STR-PSTLZ sy-vline 
WA_PC27Z_STR-ORT01 sy-vline 
WA_PC27Z_STR-GBDAT sy-vline 
WA_PC27Z_STR-GBORT sy-vline 
WA_PC27Z_STR-RVNUM sy-vline 
WA_PC27Z_STR-GESCH sy-vline 
WA_PC27Z_STR-GBNAM sy-vline 
WA_PC27Z_STR-VSNUM sy-vline 
WA_PC27Z_STR-KTONR sy-vline 
WA_PC27Z_STR-VTSCH sy-vline 
WA_PC27Z_STR-VSBEG sy-vline 
WA_PC27Z_STR-TTART sy-vline 
WA_PC27Z_STR-BEART sy-vline 
WA_PC27Z_STR-SWTBE sy-vline 
WA_PC27Z_STR-ARBEG sy-vline 
WA_PC27Z_STR-AWGRD sy-vline 
WA_PC27Z_STR-TRWAZ sy-vline 
WA_PC27Z_STR-IRWAZ sy-vline 
WA_PC27Z_STR-ARGZU sy-vline 
WA_PC27Z_STR-VVZVE sy-vline 
WA_PC27Z_STR-BEZVE sy-vline 
WA_PC27Z_STR-ZWVER sy-vline 
WA_PC27Z_STR-ZVEID sy-vline 
WA_PC27Z_STR-NAMEK sy-vline 
WA_PC27Z_STR-NAMED sy-vline 
WA_PC27Z_STR-ENDVS sy-vline 
WA_PC27Z_STR-UAVBE sy-vline 
WA_PC27Z_STR-FLD01 sy-vline 
WA_PC27Z_STR-FLD02 sy-vline 
WA_PC27Z_STR-FLD03 sy-vline 
WA_PC27Z_STR-FLD04 sy-vline 
WA_PC27Z_STR-AGRND sy-vline 
WA_PC27Z_STR-AREND sy-vline 
WA_PC27Z_STR-WIEDE sy-vline 
WA_PC27Z_STR-LOEDA sy-vline 
WA_PC27Z_STR-FAMST sy-vline 
WA_PC27Z_STR-ANSKG sy-vline 
WA_PC27Z_STR-KZALT sy-vline 
WA_PC27Z_STR-RVPFL sy-vline 
WA_PC27Z_STR-STRSS sy-vline 
WA_PC27Z_STR-HAUSN sy-vline 
WA_PC27Z_STR-POSTF sy-vline 
WA_PC27Z_STR-LNDKZ sy-vline 
WA_PC27Z_STR-ARTNA sy-vline 
WA_PC27Z_STR-ARTAD sy-vline 
WA_PC27Z_STR-BUKRS sy-vline 
WA_PC27Z_STR-AREDE sy-vline 
WA_PC27Z_STR-AVKEN sy-vline      INTO ld_text SEPARATED BY SPACE.

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