ABAP Select data from SAP table PCRPRELIMSTMIG into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PCRPRELIMSTMIG
*  INTO TABLE @DATA(IT_PCRPRELIMSTMIG2).
*--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_PCRPRELIMSTMIG INDEX 1 INTO DATA(WA_PCRPRELIMSTMIG2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PCRPRELIMSTMIG>-CLIENT = 1.
<PCRPRELIMSTMIG>-CMPLRQRSLTUUID = 1.
<PCRPRELIMSTMIG>-CMPLRQVERSUUID = 1.
<PCRPRELIMSTMIG>-CHMLCMPLNCINFOUUID = 1.
<PCRPRELIMSTMIG>-CHMLSUPLRMATLUUID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PCRPRELIMSTMIG-SUBSTANCEUUID, sy-vline,
  WA_PCRPRELIMSTMIG-CMPLRQRSLTPROCESSINGSTATUS, sy-vline,
  WA_PCRPRELIMSTMIG-CMPLRQRSLTMANUALSTATUS, sy-vline,
  WA_PCRPRELIMSTMIG-CMPLRQRSLTCALCULATEDSTATUS, sy-vline,
  WA_PCRPRELIMSTMIG-CMPLRQRSLTPRELIMCMPLNCSTS, sy-vline,
  WA_PCRPRELIMSTMIG-RELEASEDBYUSER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PCRPRELIMSTMIG 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_PCRPRELIMSTMIG 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_PCRPRELIMSTMIG INTO WA_PCRPRELIMSTMIG.


*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 RELEASEDBYUSER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PCRPRELIMSTMIG-RELEASEDBYUSER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PCRPRELIMSTMIG-RELEASEDBYUSER.
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_PCRPRELIMSTMIG_STR, 
CLIENT TYPE STRING,
CMPLRQRSLTUUID TYPE STRING,
CMPLRQVERSUUID TYPE STRING,
CHMLCMPLNCINFOUUID TYPE STRING,
CHMLSUPLRMATLUUID TYPE STRING,
SUBSTANCEUUID TYPE STRING,
CMPLRQRSLTPROCESSINGSTATUS TYPE STRING,
CMPLRQRSLTMANUALSTATUS TYPE STRING,
CMPLRQRSLTCALCULATEDSTATUS TYPE STRING,
CMPLRQRSLTPRELIMCMPLNCSTS TYPE STRING,
RELEASEDBYUSER TYPE STRING,
CHMLCOMPOSITIONTYPE TYPE STRING,
CMPLRQPATTERN TYPE STRING,
CMPLRQAPPLICATIONCOMPONENT TYPE STRING,
MIGRATIONSTATUS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PCRPRELIMSTMIG_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_PCRPRELIMSTMIG_STR-CLIENT sy-vline 
WA_PCRPRELIMSTMIG_STR-CMPLRQRSLTUUID sy-vline 
WA_PCRPRELIMSTMIG_STR-CMPLRQVERSUUID sy-vline 
WA_PCRPRELIMSTMIG_STR-CHMLCMPLNCINFOUUID sy-vline 
WA_PCRPRELIMSTMIG_STR-CHMLSUPLRMATLUUID sy-vline 
WA_PCRPRELIMSTMIG_STR-SUBSTANCEUUID sy-vline 
WA_PCRPRELIMSTMIG_STR-CMPLRQRSLTPROCESSINGSTATUS sy-vline 
WA_PCRPRELIMSTMIG_STR-CMPLRQRSLTMANUALSTATUS sy-vline 
WA_PCRPRELIMSTMIG_STR-CMPLRQRSLTCALCULATEDSTATUS sy-vline 
WA_PCRPRELIMSTMIG_STR-CMPLRQRSLTPRELIMCMPLNCSTS sy-vline 
WA_PCRPRELIMSTMIG_STR-RELEASEDBYUSER sy-vline 
WA_PCRPRELIMSTMIG_STR-CHMLCOMPOSITIONTYPE sy-vline 
WA_PCRPRELIMSTMIG_STR-CMPLRQPATTERN sy-vline 
WA_PCRPRELIMSTMIG_STR-CMPLRQAPPLICATIONCOMPONENT sy-vline 
WA_PCRPRELIMSTMIG_STR-MIGRATIONSTATUS sy-vline      INTO ld_text SEPARATED BY SPACE.

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