ABAP Select data from SAP table PICAMATCHINGDOC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PICAMATCHINGDOC
*  INTO TABLE @DATA(IT_PICAMATCHINGDOC2).
*--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_PICAMATCHINGDOC INDEX 1 INTO DATA(WA_PICAMATCHINGDOC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PICAMATCHINGDOC>-MANDT = 1.
<PICAMATCHINGDOC>-METHOD_ID = 1.
<PICAMATCHINGDOC>-DOCNR = 1.
<PICAMATCHINGDOC>-POPER = 1.
<PICAMATCHINGDOC>-RYEAR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PICAMATCHINGDOC-FISCYEARPER, sy-vline,
  WA_PICAMATCHINGDOC-RLDNR, sy-vline,
  WA_PICAMATCHINGDOC-RVERS, sy-vline,
  WA_PICAMATCHINGDOC-RITCLG, sy-vline,
  WA_PICAMATCHINGDOC-RBUKRS, sy-vline,
  WA_PICAMATCHINGDOC-RCOMP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PICAMATCHINGDOC 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_PICAMATCHINGDOC 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_PICAMATCHINGDOC INTO WA_PICAMATCHINGDOC.


*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 GJAHR, internal->external for field RYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_PICAMATCHINGDOC-RYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PICAMATCHINGDOC-RYEAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit PERI7, internal->external for field FISCYEARPER
CALL FUNCTION 'CONVERSION_EXIT_PERI7_OUTPUT'
  EXPORTING
    input =                      WA_PICAMATCHINGDOC-FISCYEARPER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PICAMATCHINGDOC-FISCYEARPER.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

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

*Conversion exit AFIMC, internal->external for field RBUNIT
CALL FUNCTION 'CONVERSION_EXIT_AFIMC_OUTPUT'
  EXPORTING
    input =                      WA_PICAMATCHINGDOC-RBUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PICAMATCHINGDOC-RBUNIT.
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_PICAMATCHINGDOC_STR, 
MANDT TYPE STRING,
METHOD_ID TYPE STRING,
DOCNR TYPE STRING,
POPER TYPE STRING,
RYEAR TYPE STRING,
FISCYEARPER TYPE STRING,
RLDNR TYPE STRING,
RVERS TYPE STRING,
RITCLG TYPE STRING,
RBUKRS TYPE STRING,
RCOMP TYPE STRING,
RCNTR TYPE STRING,
PRCTR TYPE STRING,
RFAREA TYPE STRING,
RBUSA TYPE STRING,
KOKRS TYPE STRING,
SEGMENT TYPE STRING,
RBUNIT TYPE STRING,
DESCR TYPE STRING,
BTTYPE TYPE STRING,
RTIMESTAMP TYPE STRING,
CREATEDBY TYPE STRING,
CREATEDAT TYPE STRING,
DESCM TYPE STRING,
CHANGEDBY TYPE STRING,
CHANGEDAT TYPE STRING,
DELFLG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PICAMATCHINGDOC_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_PICAMATCHINGDOC_STR-MANDT sy-vline 
WA_PICAMATCHINGDOC_STR-METHOD_ID sy-vline 
WA_PICAMATCHINGDOC_STR-DOCNR sy-vline 
WA_PICAMATCHINGDOC_STR-POPER sy-vline 
WA_PICAMATCHINGDOC_STR-RYEAR sy-vline 
WA_PICAMATCHINGDOC_STR-FISCYEARPER sy-vline 
WA_PICAMATCHINGDOC_STR-RLDNR sy-vline 
WA_PICAMATCHINGDOC_STR-RVERS sy-vline 
WA_PICAMATCHINGDOC_STR-RITCLG sy-vline 
WA_PICAMATCHINGDOC_STR-RBUKRS sy-vline 
WA_PICAMATCHINGDOC_STR-RCOMP sy-vline 
WA_PICAMATCHINGDOC_STR-RCNTR sy-vline 
WA_PICAMATCHINGDOC_STR-PRCTR sy-vline 
WA_PICAMATCHINGDOC_STR-RFAREA sy-vline 
WA_PICAMATCHINGDOC_STR-RBUSA sy-vline 
WA_PICAMATCHINGDOC_STR-KOKRS sy-vline 
WA_PICAMATCHINGDOC_STR-SEGMENT sy-vline 
WA_PICAMATCHINGDOC_STR-RBUNIT sy-vline 
WA_PICAMATCHINGDOC_STR-DESCR sy-vline 
WA_PICAMATCHINGDOC_STR-BTTYPE sy-vline 
WA_PICAMATCHINGDOC_STR-RTIMESTAMP sy-vline 
WA_PICAMATCHINGDOC_STR-CREATEDBY sy-vline 
WA_PICAMATCHINGDOC_STR-CREATEDAT sy-vline 
WA_PICAMATCHINGDOC_STR-DESCM sy-vline 
WA_PICAMATCHINGDOC_STR-CHANGEDBY sy-vline 
WA_PICAMATCHINGDOC_STR-CHANGEDAT sy-vline 
WA_PICAMATCHINGDOC_STR-DELFLG sy-vline      INTO ld_text SEPARATED BY SPACE.

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