ABAP Select data from SAP table PCRDTLMTCHNG1 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PCRDTLMTCHNG1 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 PCRDTLMTCHNG1. 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 PCRDTLMTCHNG1 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_PCRDTLMTCHNG1 TYPE STANDARD TABLE OF PCRDTLMTCHNG1,
      WA_PCRDTLMTCHNG1 TYPE PCRDTLMTCHNG1,
      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: <PCRDTLMTCHNG1> TYPE PCRDTLMTCHNG1.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PCRDTLMTCHNG1.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PCRDTLMTCHNG1
  INTO TABLE IT_PCRDTLMTCHNG1.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PCRDTLMTCHNG1
*  INTO TABLE @DATA(IT_PCRDTLMTCHNG12).
*--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_PCRDTLMTCHNG1 INDEX 1 INTO DATA(WA_PCRDTLMTCHNG12).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PCRDTLMTCHNG1 ASSIGNING <PCRDTLMTCHNG1>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PCRDTLMTCHNG1>-MANDT = 1.
<PCRDTLMTCHNG1>-BUSINESSPARTNER = 1.
<PCRDTLMTCHNG1>-CHANGEDOCOBJECT = 1.
<PCRDTLMTCHNG1>-CHANGEDOCOBJECTCLASS = 1.
<PCRDTLMTCHNG1>-CHANGEDOCUMENT = 1.

ENDLOOP.

LOOP AT IT_PCRDTLMTCHNG1 INTO WA_PCRDTLMTCHNG1.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PCRDTLMTCHNG1-DATABASETABLE, sy-vline,
  WA_PCRDTLMTCHNG1-CHANGEDOCTABLEKEY, sy-vline,
  WA_PCRDTLMTCHNG1-CHANGEDOCDATABASETABLEFIELD, sy-vline,
  WA_PCRDTLMTCHNG1-CHANGEDOCITEMCHANGETYPE, sy-vline,
  WA_PCRDTLMTCHNG1-BUSINESSPARTNERCATEGORY, sy-vline,
  WA_PCRDTLMTCHNG1-AUTHORIZATIONGROUP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PCRDTLMTCHNG1 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_PCRDTLMTCHNG1 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_PCRDTLMTCHNG1 INTO WA_PCRDTLMTCHNG1.


*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 BUSINESSPARTNER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PCRDTLMTCHNG1-BUSINESSPARTNER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PCRDTLMTCHNG1-BUSINESSPARTNER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CHANGEDOCOBJECTCLASS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PCRDTLMTCHNG1-CHANGEDOCOBJECTCLASS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PCRDTLMTCHNG1-CHANGEDOCOBJECTCLASS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CHANGEDOCUMENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PCRDTLMTCHNG1-CHANGEDOCUMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PCRDTLMTCHNG1-CHANGEDOCUMENT.
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_PCRDTLMTCHNG1_STR, 
MANDT TYPE STRING,
BUSINESSPARTNER TYPE STRING,
CHANGEDOCOBJECT TYPE STRING,
CHANGEDOCOBJECTCLASS TYPE STRING,
CHANGEDOCUMENT TYPE STRING,
DATABASETABLE TYPE STRING,
CHANGEDOCTABLEKEY TYPE STRING,
CHANGEDOCDATABASETABLEFIELD TYPE STRING,
CHANGEDOCITEMCHANGETYPE TYPE STRING,
BUSINESSPARTNERCATEGORY TYPE STRING,
AUTHORIZATIONGROUP TYPE STRING,
BUSINESSPARTNERUUID TYPE STRING,
BUSINESSPARTNERNAME TYPE STRING,
BUSINESSPARTNERFULLNAME TYPE STRING,
BUSINESSPARTNERISBLOCKED TYPE STRING,
ISBUSINESSPURPOSECOMPLETED TYPE STRING,
ORGANIZATIONBPNAME1 TYPE STRING,
ORGANIZATIONBPNAME2 TYPE STRING,
ORGANIZATIONBPNAME3 TYPE STRING,
ORGANIZATIONBPNAME4 TYPE STRING,
LEGALFORM TYPE STRING,
ORGANIZATIONFOUNDATIONDATE TYPE STRING,
ORGANIZATIONLIQUIDATIONDATE TYPE STRING,
INDUSTRY TYPE STRING,
BUSINESSPARTNERGROUPING TYPE STRING,
BUSINESSPARTNERTYPE TYPE STRING,
SEARCHTERM1 TYPE STRING,
SEARCHTERM2 TYPE STRING,
ISMARKEDFORARCHIVING TYPE STRING,
BUSINESSPARTNERIDBYEXTSYSTEM TYPE STRING,
LEGALENTITYOFORGANIZATION TYPE STRING,
BUSINESSPARTNERPRINTFORMAT TYPE STRING,
BUSINESSPARTNERDATAORIGINTYPE TYPE STRING,
BUSINESSPARTNERISNOTRELEASED TYPE STRING,
ISNOTCONTRACTUALLYCAPABLE TYPE STRING,
BUSINESSPARTNEROCCUPATION TYPE STRING,
BUSPARTMARITALSTATUS TYPE STRING,
BUSPARTNATIONALITY TYPE STRING,
NAMECOUNTRY TYPE STRING,
NONRESIDENTCOMPANYORIGINCNTRY TYPE STRING,
CHANGEDOCPREVIOUSCURRENCY TYPE STRING,
CHANGEDOCNEWCURRENCY TYPE STRING,
CREATEDBYUSER TYPE STRING,
CREATIONDATE TYPE STRING,
CREATIONTIME TYPE STRING,
NEWCREDITLIMITAMOUNT TYPE STRING,
OLDCREDITLIMITAMOUNT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PCRDTLMTCHNG1_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_PCRDTLMTCHNG1_STR-MANDT sy-vline 
WA_PCRDTLMTCHNG1_STR-BUSINESSPARTNER sy-vline 
WA_PCRDTLMTCHNG1_STR-CHANGEDOCOBJECT sy-vline 
WA_PCRDTLMTCHNG1_STR-CHANGEDOCOBJECTCLASS sy-vline 
WA_PCRDTLMTCHNG1_STR-CHANGEDOCUMENT sy-vline 
WA_PCRDTLMTCHNG1_STR-DATABASETABLE sy-vline 
WA_PCRDTLMTCHNG1_STR-CHANGEDOCTABLEKEY sy-vline 
WA_PCRDTLMTCHNG1_STR-CHANGEDOCDATABASETABLEFIELD sy-vline 
WA_PCRDTLMTCHNG1_STR-CHANGEDOCITEMCHANGETYPE sy-vline 
WA_PCRDTLMTCHNG1_STR-BUSINESSPARTNERCATEGORY sy-vline 
WA_PCRDTLMTCHNG1_STR-AUTHORIZATIONGROUP sy-vline 
WA_PCRDTLMTCHNG1_STR-BUSINESSPARTNERUUID sy-vline 
WA_PCRDTLMTCHNG1_STR-BUSINESSPARTNERNAME sy-vline 
WA_PCRDTLMTCHNG1_STR-BUSINESSPARTNERFULLNAME sy-vline 
WA_PCRDTLMTCHNG1_STR-BUSINESSPARTNERISBLOCKED sy-vline 
WA_PCRDTLMTCHNG1_STR-ISBUSINESSPURPOSECOMPLETED sy-vline 
WA_PCRDTLMTCHNG1_STR-ORGANIZATIONBPNAME1 sy-vline 
WA_PCRDTLMTCHNG1_STR-ORGANIZATIONBPNAME2 sy-vline 
WA_PCRDTLMTCHNG1_STR-ORGANIZATIONBPNAME3 sy-vline 
WA_PCRDTLMTCHNG1_STR-ORGANIZATIONBPNAME4 sy-vline 
WA_PCRDTLMTCHNG1_STR-LEGALFORM sy-vline 
WA_PCRDTLMTCHNG1_STR-ORGANIZATIONFOUNDATIONDATE sy-vline 
WA_PCRDTLMTCHNG1_STR-ORGANIZATIONLIQUIDATIONDATE sy-vline 
WA_PCRDTLMTCHNG1_STR-INDUSTRY sy-vline 
WA_PCRDTLMTCHNG1_STR-BUSINESSPARTNERGROUPING sy-vline 
WA_PCRDTLMTCHNG1_STR-BUSINESSPARTNERTYPE sy-vline 
WA_PCRDTLMTCHNG1_STR-SEARCHTERM1 sy-vline 
WA_PCRDTLMTCHNG1_STR-SEARCHTERM2 sy-vline 
WA_PCRDTLMTCHNG1_STR-ISMARKEDFORARCHIVING sy-vline 
WA_PCRDTLMTCHNG1_STR-BUSINESSPARTNERIDBYEXTSYSTEM sy-vline 
WA_PCRDTLMTCHNG1_STR-LEGALENTITYOFORGANIZATION sy-vline 
WA_PCRDTLMTCHNG1_STR-BUSINESSPARTNERPRINTFORMAT sy-vline 
WA_PCRDTLMTCHNG1_STR-BUSINESSPARTNERDATAORIGINTYPE sy-vline 
WA_PCRDTLMTCHNG1_STR-BUSINESSPARTNERISNOTRELEASED sy-vline 
WA_PCRDTLMTCHNG1_STR-ISNOTCONTRACTUALLYCAPABLE sy-vline 
WA_PCRDTLMTCHNG1_STR-BUSINESSPARTNEROCCUPATION sy-vline 
WA_PCRDTLMTCHNG1_STR-BUSPARTMARITALSTATUS sy-vline 
WA_PCRDTLMTCHNG1_STR-BUSPARTNATIONALITY sy-vline 
WA_PCRDTLMTCHNG1_STR-NAMECOUNTRY sy-vline 
WA_PCRDTLMTCHNG1_STR-NONRESIDENTCOMPANYORIGINCNTRY sy-vline 
WA_PCRDTLMTCHNG1_STR-CHANGEDOCPREVIOUSCURRENCY sy-vline 
WA_PCRDTLMTCHNG1_STR-CHANGEDOCNEWCURRENCY sy-vline 
WA_PCRDTLMTCHNG1_STR-CREATEDBYUSER sy-vline 
WA_PCRDTLMTCHNG1_STR-CREATIONDATE sy-vline 
WA_PCRDTLMTCHNG1_STR-CREATIONTIME sy-vline 
WA_PCRDTLMTCHNG1_STR-NEWCREDITLIMITAMOUNT sy-vline 
WA_PCRDTLMTCHNG1_STR-OLDCREDITLIMITAMOUNT sy-vline      INTO ld_text SEPARATED BY SPACE.

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