ABAP Select data from SAP table MILL_ISSUE_ITEM1 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP MILL_ISSUE_ITEM1 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 MILL_ISSUE_ITEM1. 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 MILL_ISSUE_ITEM1 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_MILL_ISSUE_ITEM1 TYPE STANDARD TABLE OF MILL_ISSUE_ITEM1,
      WA_MILL_ISSUE_ITEM1 TYPE MILL_ISSUE_ITEM1,
      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: <MILL_ISSUE_ITEM1> TYPE MILL_ISSUE_ITEM1.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_MILL_ISSUE_ITEM1.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM MILL_ISSUE_ITEM1
  INTO TABLE IT_MILL_ISSUE_ITEM1.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MILL_ISSUE_ITEM1
*  INTO TABLE @DATA(IT_MILL_ISSUE_ITEM12).
*--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_MILL_ISSUE_ITEM1 INDEX 1 INTO DATA(WA_MILL_ISSUE_ITEM12).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_MILL_ISSUE_ITEM1 ASSIGNING <MILL_ISSUE_ITEM1>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MILL_ISSUE_ITEM1>-NAME1 = 1.
<MILL_ISSUE_ITEM1>-LGOBE = 1.
<MILL_ISSUE_ITEM1>-MATNR = 1.
<MILL_ISSUE_ITEM1>-WERKS = 1.
<MILL_ISSUE_ITEM1>-LGORT = 1.

ENDLOOP.

LOOP AT IT_MILL_ISSUE_ITEM1 INTO WA_MILL_ISSUE_ITEM1.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MILL_ISSUE_ITEM1-CHARG, sy-vline,
  WA_MILL_ISSUE_ITEM1-SOBKZ, sy-vline,
  WA_MILL_ISSUE_ITEM1-KDAUF, sy-vline,
  WA_MILL_ISSUE_ITEM1-KDPOS, sy-vline,
  WA_MILL_ISSUE_ITEM1-ERFMG, sy-vline,
  WA_MILL_ISSUE_ITEM1-ERFME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MILL_ISSUE_ITEM1 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_MILL_ISSUE_ITEM1 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_MILL_ISSUE_ITEM1 INTO WA_MILL_ISSUE_ITEM1.


*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 MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_MILL_ISSUE_ITEM1-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MILL_ISSUE_ITEM1-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KDAUF
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MILL_ISSUE_ITEM1-KDAUF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MILL_ISSUE_ITEM1-KDAUF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field ERFME
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_MILL_ISSUE_ITEM1-ERFME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MILL_ISSUE_ITEM1-ERFME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KOSTL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MILL_ISSUE_ITEM1-KOSTL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MILL_ISSUE_ITEM1-KOSTL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AUFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MILL_ISSUE_ITEM1-AUFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MILL_ISSUE_ITEM1-AUFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field NPLNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MILL_ISSUE_ITEM1-NPLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MILL_ISSUE_ITEM1-NPLNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KONTO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MILL_ISSUE_ITEM1-KONTO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MILL_ISSUE_ITEM1-KONTO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field MAT_KDAUF
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MILL_ISSUE_ITEM1-MAT_KDAUF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MILL_ISSUE_ITEM1-MAT_KDAUF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSP, internal->external for field MAT_PSPNR
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_MILL_ISSUE_ITEM1-MAT_PSPNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MILL_ISSUE_ITEM1-MAT_PSPNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_MILL_ISSUE_ITEM1-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MILL_ISSUE_ITEM1-MEINS.
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_MILL_ISSUE_ITEM1_STR, 
NAME1 TYPE STRING,
LGOBE TYPE STRING,
MATNR TYPE STRING,
WERKS TYPE STRING,
LGORT TYPE STRING,
CHARG TYPE STRING,
SOBKZ TYPE STRING,
KDAUF TYPE STRING,
KDPOS TYPE STRING,
ERFMG TYPE STRING,
ERFME TYPE STRING,
KOSTL TYPE STRING,
AUFNR TYPE STRING,
NPLNR TYPE STRING,
EXBWR TYPE STRING,
KONTO TYPE STRING,
MAT_KDAUF TYPE STRING,
MAT_KDPOS TYPE STRING,
MAT_PSPNR TYPE STRING,
MAKTX TYPE STRING,
MENGE TYPE STRING,
MEINS TYPE STRING,
LOGLEVEL TYPE STRING,
MIGO_INSMK TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MILL_ISSUE_ITEM1_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_MILL_ISSUE_ITEM1_STR-NAME1 sy-vline 
WA_MILL_ISSUE_ITEM1_STR-LGOBE sy-vline 
WA_MILL_ISSUE_ITEM1_STR-MATNR sy-vline 
WA_MILL_ISSUE_ITEM1_STR-WERKS sy-vline 
WA_MILL_ISSUE_ITEM1_STR-LGORT sy-vline 
WA_MILL_ISSUE_ITEM1_STR-CHARG sy-vline 
WA_MILL_ISSUE_ITEM1_STR-SOBKZ sy-vline 
WA_MILL_ISSUE_ITEM1_STR-KDAUF sy-vline 
WA_MILL_ISSUE_ITEM1_STR-KDPOS sy-vline 
WA_MILL_ISSUE_ITEM1_STR-ERFMG sy-vline 
WA_MILL_ISSUE_ITEM1_STR-ERFME sy-vline 
WA_MILL_ISSUE_ITEM1_STR-KOSTL sy-vline 
WA_MILL_ISSUE_ITEM1_STR-AUFNR sy-vline 
WA_MILL_ISSUE_ITEM1_STR-NPLNR sy-vline 
WA_MILL_ISSUE_ITEM1_STR-EXBWR sy-vline 
WA_MILL_ISSUE_ITEM1_STR-KONTO sy-vline 
WA_MILL_ISSUE_ITEM1_STR-MAT_KDAUF sy-vline 
WA_MILL_ISSUE_ITEM1_STR-MAT_KDPOS sy-vline 
WA_MILL_ISSUE_ITEM1_STR-MAT_PSPNR sy-vline 
WA_MILL_ISSUE_ITEM1_STR-MAKTX sy-vline 
WA_MILL_ISSUE_ITEM1_STR-MENGE sy-vline 
WA_MILL_ISSUE_ITEM1_STR-MEINS sy-vline 
WA_MILL_ISSUE_ITEM1_STR-LOGLEVEL sy-vline 
WA_MILL_ISSUE_ITEM1_STR-MIGO_INSMK sy-vline      INTO ld_text SEPARATED BY SPACE.

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