ABAP Select data from SAP table ISU_MR_DOC_CORR_ATTR_N into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ISU_MR_DOC_CORR_ATTR_N
*  INTO TABLE @DATA(IT_ISU_MR_DOC_CORR_ATTR_N2).
*--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_ISU_MR_DOC_CORR_ATTR_N INDEX 1 INTO DATA(WA_ISU_MR_DOC_CORR_ATTR_N2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ISU_MR_DOC_CORR_ATTR_N>-ABLBELNR = 1.
<ISU_MR_DOC_CORR_ATTR_N>-EQUNR = 1.
<ISU_MR_DOC_CORR_ATTR_N>-ZWNUMMER = 1.
<ISU_MR_DOC_CORR_ATTR_N>-ADATSOLL = 1.
<ISU_MR_DOC_CORR_ATTR_N>-ZWSTAND_NEW = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ISU_MR_DOC_CORR_ATTR_N-ADAT_NEW, sy-vline,
  WA_ISU_MR_DOC_CORR_ATTR_N-ABLHINW, sy-vline,
  WA_ISU_MR_DOC_CORR_ATTR_N-ABLHINW_TEXT, sy-vline,
  WA_ISU_MR_DOC_CORR_ATTR_N-NO_ENTRY, sy-vline,
  WA_ISU_MR_DOC_CORR_ATTR_N-CHECK_ERROR, sy-vline,
  WA_ISU_MR_DOC_CORR_ATTR_N-ERROR_FIELD, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ISU_MR_DOC_CORR_ATTR_N 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_ISU_MR_DOC_CORR_ATTR_N 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_ISU_MR_DOC_CORR_ATTR_N INTO WA_ISU_MR_DOC_CORR_ATTR_N.


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

*Conversion exit ALPHA, internal->external for field EQUNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISU_MR_DOC_CORR_ATTR_N-EQUNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISU_MR_DOC_CORR_ATTR_N-EQUNR.
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_ISU_MR_DOC_CORR_ATTR_N_STR, 
ABLBELNR TYPE STRING,
EQUNR TYPE STRING,
ZWNUMMER TYPE STRING,
ADATSOLL TYPE STRING,
ZWSTAND_NEW TYPE STRING,
ADAT_NEW TYPE STRING,
ABLHINW TYPE STRING,
ABLHINW_TEXT TYPE STRING,
NO_ENTRY TYPE STRING,
CHECK_ERROR TYPE STRING,
ERROR_FIELD TYPE STRING,
ABLSTAT_ICON TYPE STRING,
ABLSTAT TYPE STRING,
ENTRY_ADAT TYPE STRING,
ENTRY_ZWSTAND TYPE STRING,
ENTRY_ABLHINW TYPE STRING,
COMPT TYPE STRING,
QNT_STATUS TYPE STRING,
QNT_STATUS_INFO TYPE STRING,
QDSTAT TYPE STRING,
ZWSTAND_EXPECT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ISU_MR_DOC_CORR_ATTR_N_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_ISU_MR_DOC_CORR_ATTR_N_STR-ABLBELNR sy-vline 
WA_ISU_MR_DOC_CORR_ATTR_N_STR-EQUNR sy-vline 
WA_ISU_MR_DOC_CORR_ATTR_N_STR-ZWNUMMER sy-vline 
WA_ISU_MR_DOC_CORR_ATTR_N_STR-ADATSOLL sy-vline 
WA_ISU_MR_DOC_CORR_ATTR_N_STR-ZWSTAND_NEW sy-vline 
WA_ISU_MR_DOC_CORR_ATTR_N_STR-ADAT_NEW sy-vline 
WA_ISU_MR_DOC_CORR_ATTR_N_STR-ABLHINW sy-vline 
WA_ISU_MR_DOC_CORR_ATTR_N_STR-ABLHINW_TEXT sy-vline 
WA_ISU_MR_DOC_CORR_ATTR_N_STR-NO_ENTRY sy-vline 
WA_ISU_MR_DOC_CORR_ATTR_N_STR-CHECK_ERROR sy-vline 
WA_ISU_MR_DOC_CORR_ATTR_N_STR-ERROR_FIELD sy-vline 
WA_ISU_MR_DOC_CORR_ATTR_N_STR-ABLSTAT_ICON sy-vline 
WA_ISU_MR_DOC_CORR_ATTR_N_STR-ABLSTAT sy-vline 
WA_ISU_MR_DOC_CORR_ATTR_N_STR-ENTRY_ADAT sy-vline 
WA_ISU_MR_DOC_CORR_ATTR_N_STR-ENTRY_ZWSTAND sy-vline 
WA_ISU_MR_DOC_CORR_ATTR_N_STR-ENTRY_ABLHINW sy-vline 
WA_ISU_MR_DOC_CORR_ATTR_N_STR-COMPT sy-vline 
WA_ISU_MR_DOC_CORR_ATTR_N_STR-QNT_STATUS sy-vline 
WA_ISU_MR_DOC_CORR_ATTR_N_STR-QNT_STATUS_INFO sy-vline 
WA_ISU_MR_DOC_CORR_ATTR_N_STR-QDSTAT sy-vline 
WA_ISU_MR_DOC_CORR_ATTR_N_STR-ZWSTAND_EXPECT sy-vline      INTO ld_text SEPARATED BY SPACE.

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