ABAP Select data from SAP table CCGLV_PRTREQ_HDR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CCGLV_PRTREQ_HDR
*  INTO TABLE @DATA(IT_CCGLV_PRTREQ_HDR2).
*--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_CCGLV_PRTREQ_HDR INDEX 1 INTO DATA(WA_CCGLV_PRTREQ_HDR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CCGLV_PRTREQ_HDR>-MANDT = 1.
<CCGLV_PRTREQ_HDR>-PRTREQ_ID = 1.
<CCGLV_PRTREQ_HDR>-CRDAT = 1.
<CCGLV_PRTREQ_HDR>-CRNAM = 1.
<CCGLV_PRTREQ_HDR>-CRTIM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CCGLV_PRTREQ_HDR-STNID, sy-vline,
  WA_CCGLV_PRTREQ_HDR-PRNID, sy-vline,
  WA_CCGLV_PRTREQ_HDR-MATNR, sy-vline,
  WA_CCGLV_PRTREQ_HDR-TRIGORDID, sy-vline,
  WA_CCGLV_PRTREQ_HDR-ORDER1, sy-vline,
  WA_CCGLV_PRTREQ_HDR-ORDER2, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CCGLV_PRTREQ_HDR 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_CCGLV_PRTREQ_HDR 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_CCGLV_PRTREQ_HDR INTO WA_CCGLV_PRTREQ_HDR.


*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 MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_CCGLV_PRTREQ_HDR-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CCGLV_PRTREQ_HDR-MATNR.
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_CCGLV_PRTREQ_HDR_STR, 
MANDT TYPE STRING,
PRTREQ_ID TYPE STRING,
CRDAT TYPE STRING,
CRNAM TYPE STRING,
CRTIM TYPE STRING,
STNID TYPE STRING,
PRNID TYPE STRING,
MATNR TYPE STRING,
TRIGORDID TYPE STRING,
ORDER1 TYPE STRING,
ORDER2 TYPE STRING,
ORDER3 TYPE STRING,
ORDER4 TYPE STRING,
ORDER5 TYPE STRING,
ORDER6 TYPE STRING,
ORDER7 TYPE STRING,
ORDER8 TYPE STRING,
ORDER9 TYPE STRING,
ORDER10 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CCGLV_PRTREQ_HDR_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_CCGLV_PRTREQ_HDR_STR-MANDT sy-vline 
WA_CCGLV_PRTREQ_HDR_STR-PRTREQ_ID sy-vline 
WA_CCGLV_PRTREQ_HDR_STR-CRDAT sy-vline 
WA_CCGLV_PRTREQ_HDR_STR-CRNAM sy-vline 
WA_CCGLV_PRTREQ_HDR_STR-CRTIM sy-vline 
WA_CCGLV_PRTREQ_HDR_STR-STNID sy-vline 
WA_CCGLV_PRTREQ_HDR_STR-PRNID sy-vline 
WA_CCGLV_PRTREQ_HDR_STR-MATNR sy-vline 
WA_CCGLV_PRTREQ_HDR_STR-TRIGORDID sy-vline 
WA_CCGLV_PRTREQ_HDR_STR-ORDER1 sy-vline 
WA_CCGLV_PRTREQ_HDR_STR-ORDER2 sy-vline 
WA_CCGLV_PRTREQ_HDR_STR-ORDER3 sy-vline 
WA_CCGLV_PRTREQ_HDR_STR-ORDER4 sy-vline 
WA_CCGLV_PRTREQ_HDR_STR-ORDER5 sy-vline 
WA_CCGLV_PRTREQ_HDR_STR-ORDER6 sy-vline 
WA_CCGLV_PRTREQ_HDR_STR-ORDER7 sy-vline 
WA_CCGLV_PRTREQ_HDR_STR-ORDER8 sy-vline 
WA_CCGLV_PRTREQ_HDR_STR-ORDER9 sy-vline 
WA_CCGLV_PRTREQ_HDR_STR-ORDER10 sy-vline      INTO ld_text SEPARATED BY SPACE.

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