ABAP Select data from SAP table P2CO_COABS into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P2CO_COABS 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 P2CO_COABS. 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 P2CO_COABS 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_P2CO_COABS TYPE STANDARD TABLE OF P2CO_COABS,
      WA_P2CO_COABS TYPE P2CO_COABS,
      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: <P2CO_COABS> TYPE P2CO_COABS.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P2CO_COABS.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P2CO_COABS
  INTO TABLE IT_P2CO_COABS.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P2CO_COABS
*  INTO TABLE @DATA(IT_P2CO_COABS2).
*--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_P2CO_COABS INDEX 1 INTO DATA(WA_P2CO_COABS2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P2CO_COABS ASSIGNING <P2CO_COABS>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P2CO_COABS>-MANDT = 1.
<P2CO_COABS>-DCT_PERNR = 1.
<P2CO_COABS>-DCT_SEQNR = 1.
<P2CO_COABS>-DCT_ROWID = 1.
<P2CO_COABS>-ABZNR = 1.

ENDLOOP.

LOOP AT IT_P2CO_COABS INTO WA_P2CO_COABS.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P2CO_COABS-BUKRS, sy-vline,
  WA_P2CO_COABS-AWART, sy-vline,
  WA_P2CO_COABS-BEGDA, sy-vline,
  WA_P2CO_COABS-ENDDA, sy-vline,
  WA_P2CO_COABS-INIDAY, sy-vline,
  WA_P2CO_COABS-INIVAL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P2CO_COABS 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_P2CO_COABS 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_P2CO_COABS INTO WA_P2CO_COABS.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_P2CO_COABS_STR, 
MANDT TYPE STRING,
DCT_PERNR TYPE STRING,
DCT_SEQNR TYPE STRING,
DCT_ROWID TYPE STRING,
ABZNR TYPE STRING,
BUKRS TYPE STRING,
AWART TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
INIDAY TYPE STRING,
INIVAL TYPE STRING,
BASINI TYPE STRING,
DBSINI TYPE STRING,
DISDAY TYPE STRING,
DISVAL TYPE STRING,
BASDIS TYPE STRING,
DBSDIS TYPE STRING,
AIDDAY TYPE STRING,
AIDVAL TYPE STRING,
BASAID TYPE STRING,
DBSAID TYPE STRING,
ABSDAY TYPE STRING,
OBEGD TYPE STRING,
OENDD TYPE STRING,
IBEGD TYPE STRING,
IPEND TYPE STRING,
BASE_EPS TYPE STRING,
BASE_AFP TYPE STRING,
BASE_ARP TYPE STRING,
BASE_PAR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P2CO_COABS_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_P2CO_COABS_STR-MANDT sy-vline 
WA_P2CO_COABS_STR-DCT_PERNR sy-vline 
WA_P2CO_COABS_STR-DCT_SEQNR sy-vline 
WA_P2CO_COABS_STR-DCT_ROWID sy-vline 
WA_P2CO_COABS_STR-ABZNR sy-vline 
WA_P2CO_COABS_STR-BUKRS sy-vline 
WA_P2CO_COABS_STR-AWART sy-vline 
WA_P2CO_COABS_STR-BEGDA sy-vline 
WA_P2CO_COABS_STR-ENDDA sy-vline 
WA_P2CO_COABS_STR-INIDAY sy-vline 
WA_P2CO_COABS_STR-INIVAL sy-vline 
WA_P2CO_COABS_STR-BASINI sy-vline 
WA_P2CO_COABS_STR-DBSINI sy-vline 
WA_P2CO_COABS_STR-DISDAY sy-vline 
WA_P2CO_COABS_STR-DISVAL sy-vline 
WA_P2CO_COABS_STR-BASDIS sy-vline 
WA_P2CO_COABS_STR-DBSDIS sy-vline 
WA_P2CO_COABS_STR-AIDDAY sy-vline 
WA_P2CO_COABS_STR-AIDVAL sy-vline 
WA_P2CO_COABS_STR-BASAID sy-vline 
WA_P2CO_COABS_STR-DBSAID sy-vline 
WA_P2CO_COABS_STR-ABSDAY sy-vline 
WA_P2CO_COABS_STR-OBEGD sy-vline 
WA_P2CO_COABS_STR-OENDD sy-vline 
WA_P2CO_COABS_STR-IBEGD sy-vline 
WA_P2CO_COABS_STR-IPEND sy-vline 
WA_P2CO_COABS_STR-BASE_EPS sy-vline 
WA_P2CO_COABS_STR-BASE_AFP sy-vline 
WA_P2CO_COABS_STR-BASE_ARP sy-vline 
WA_P2CO_COABS_STR-BASE_PAR sy-vline      INTO ld_text SEPARATED BY SPACE.

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