ABAP Select data from SAP table ICL_CORR_MASSPR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ICL_CORR_MASSPR
*  INTO TABLE @DATA(IT_ICL_CORR_MASSPR2).
*--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_ICL_CORR_MASSPR INDEX 1 INTO DATA(WA_ICL_CORR_MASSPR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ICL_CORR_MASSPR>-COTYP = 1.
<ICL_CORR_MASSPR>-COPRC = 1.
<ICL_CORR_MASSPR>-FORMKEY = 1.
<ICL_CORR_MASSPR>-DOCNO = 1.
<ICL_CORR_MASSPR>-DOCID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ICL_CORR_MASSPR-BPART, sy-vline,
  WA_ICL_CORR_MASSPR-CLAIM, sy-vline,
  WA_ICL_CORR_MASSPR-SUBCL, sy-vline,
  WA_ICL_CORR_MASSPR-SUBOBJCAT, sy-vline,
  WA_ICL_CORR_MASSPR-SUBOBJECT, sy-vline,
  WA_ICL_CORR_MASSPR-COKEY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ICL_CORR_MASSPR 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_ICL_CORR_MASSPR 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_ICL_CORR_MASSPR INTO WA_ICL_CORR_MASSPR.


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

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

*Conversion exit ISOLA, internal->external for field LANGU
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_ICL_CORR_MASSPR-LANGU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICL_CORR_MASSPR-LANGU.
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_ICL_CORR_MASSPR_STR, 
COTYP TYPE STRING,
COPRC TYPE STRING,
FORMKEY TYPE STRING,
DOCNO TYPE STRING,
DOCID TYPE STRING,
BPART TYPE STRING,
CLAIM TYPE STRING,
SUBCL TYPE STRING,
SUBOBJCAT TYPE STRING,
SUBOBJECT TYPE STRING,
COKEY TYPE STRING,
PAYMENT TYPE STRING,
LANGU TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ICL_CORR_MASSPR_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_ICL_CORR_MASSPR_STR-COTYP sy-vline 
WA_ICL_CORR_MASSPR_STR-COPRC sy-vline 
WA_ICL_CORR_MASSPR_STR-FORMKEY sy-vline 
WA_ICL_CORR_MASSPR_STR-DOCNO sy-vline 
WA_ICL_CORR_MASSPR_STR-DOCID sy-vline 
WA_ICL_CORR_MASSPR_STR-BPART sy-vline 
WA_ICL_CORR_MASSPR_STR-CLAIM sy-vline 
WA_ICL_CORR_MASSPR_STR-SUBCL sy-vline 
WA_ICL_CORR_MASSPR_STR-SUBOBJCAT sy-vline 
WA_ICL_CORR_MASSPR_STR-SUBOBJECT sy-vline 
WA_ICL_CORR_MASSPR_STR-COKEY sy-vline 
WA_ICL_CORR_MASSPR_STR-PAYMENT sy-vline 
WA_ICL_CORR_MASSPR_STR-LANGU sy-vline      INTO ld_text SEPARATED BY SPACE.

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