ABAP Select data from SAP table CPPMGCPHIST into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CPPMGCPHIST
*  INTO TABLE @DATA(IT_CPPMGCPHIST2).
*--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_CPPMGCPHIST INDEX 1 INTO DATA(WA_CPPMGCPHIST2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CPPMGCPHIST>-MANDT = 1.
<CPPMGCPHIST>-COUNTERPARTY = 1.
<CPPMGCPHIST>-PREPAYMENTTOTALAMT = 1.
<CPPMGCPHIST>-PREPAYMENTAGREEMENTCURRENCY = 1.
<CPPMGCPHIST>-CURRENCY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CPPMGCPHIST-PREPAYMENTAGRMTSETTLEDAMOUNT, sy-vline,
  WA_CPPMGCPHIST-PREPAYMENTDISTRCURRENCY, sy-vline,
  WA_CPPMGCPHIST-PREPAYMENTAGRMTRECOVEREDAMOUNT, sy-vline,
  WA_CPPMGCPHIST-PREPAYACCRUALPOSTEDCURRENCY, sy-vline,
  WA_CPPMGCPHIST-PREPAYMENTECONOMICGROUP, sy-vline,
  WA_CPPMGCPHIST-PREPAYTRDGCONTRTOTALMKTAMT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CPPMGCPHIST 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_CPPMGCPHIST 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_CPPMGCPHIST INTO WA_CPPMGCPHIST.


*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 COUNTERPARTY
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CPPMGCPHIST-COUNTERPARTY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CPPMGCPHIST-COUNTERPARTY.
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_CPPMGCPHIST_STR, 
MANDT TYPE STRING,
COUNTERPARTY TYPE STRING,
PREPAYMENTTOTALAMT TYPE STRING,
PREPAYMENTAGREEMENTCURRENCY TYPE STRING,
CURRENCY TYPE STRING,
PREPAYMENTAGRMTSETTLEDAMOUNT TYPE STRING,
PREPAYMENTDISTRCURRENCY TYPE STRING,
PREPAYMENTAGRMTRECOVEREDAMOUNT TYPE STRING,
PREPAYACCRUALPOSTEDCURRENCY TYPE STRING,
PREPAYMENTECONOMICGROUP TYPE STRING,
PREPAYTRDGCONTRTOTALMKTAMT TYPE STRING,
PREPAYTRDGCONTRTOTALMKTAMTCRCY TYPE STRING,
PREPAYCOUNTERPARTYCREDITLMTAMT TYPE STRING,
PREPAYCOUNTERPARTYCRDTLMTCRCY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CPPMGCPHIST_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_CPPMGCPHIST_STR-MANDT sy-vline 
WA_CPPMGCPHIST_STR-COUNTERPARTY sy-vline 
WA_CPPMGCPHIST_STR-PREPAYMENTTOTALAMT sy-vline 
WA_CPPMGCPHIST_STR-PREPAYMENTAGREEMENTCURRENCY sy-vline 
WA_CPPMGCPHIST_STR-CURRENCY sy-vline 
WA_CPPMGCPHIST_STR-PREPAYMENTAGRMTSETTLEDAMOUNT sy-vline 
WA_CPPMGCPHIST_STR-PREPAYMENTDISTRCURRENCY sy-vline 
WA_CPPMGCPHIST_STR-PREPAYMENTAGRMTRECOVEREDAMOUNT sy-vline 
WA_CPPMGCPHIST_STR-PREPAYACCRUALPOSTEDCURRENCY sy-vline 
WA_CPPMGCPHIST_STR-PREPAYMENTECONOMICGROUP sy-vline 
WA_CPPMGCPHIST_STR-PREPAYTRDGCONTRTOTALMKTAMT sy-vline 
WA_CPPMGCPHIST_STR-PREPAYTRDGCONTRTOTALMKTAMTCRCY sy-vline 
WA_CPPMGCPHIST_STR-PREPAYCOUNTERPARTYCREDITLMTAMT sy-vline 
WA_CPPMGCPHIST_STR-PREPAYCOUNTERPARTYCRDTLMTCRCY sy-vline      INTO ld_text SEPARATED BY SPACE.

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