ABAP Select data from SAP table ISU_DIST_LOT_HEAD into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP ISU_DIST_LOT_HEAD 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_DIST_LOT_HEAD. 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_DIST_LOT_HEAD 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_DIST_LOT_HEAD TYPE STANDARD TABLE OF ISU_DIST_LOT_HEAD,
      WA_ISU_DIST_LOT_HEAD TYPE ISU_DIST_LOT_HEAD,
      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_DIST_LOT_HEAD> TYPE ISU_DIST_LOT_HEAD.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ISU_DIST_LOT_HEAD
*  INTO TABLE @DATA(IT_ISU_DIST_LOT_HEAD2).
*--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_DIST_LOT_HEAD INDEX 1 INTO DATA(WA_ISU_DIST_LOT_HEAD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ISU_DIST_LOT_HEAD>-ICON = 1.
<ISU_DIST_LOT_HEAD>-SERV_PROV = 1.
<ISU_DIST_LOT_HEAD>-FA_SERV_PROV = 1.
<ISU_DIST_LOT_HEAD>-VKAGG = 1.
<ISU_DIST_LOT_HEAD>-MANDT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ISU_DIST_LOT_HEAD-KEYZ1, sy-vline,
  WA_ISU_DIST_LOT_HEAD-KEYZ2, sy-vline,
  WA_ISU_DIST_LOT_HEAD-APPLK, sy-vline,
  WA_ISU_DIST_LOT_HEAD-HERKF, sy-vline,
  WA_ISU_DIST_LOT_HEAD-FIKEY, sy-vline,
  WA_ISU_DIST_LOT_HEAD-BVRKO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ISU_DIST_LOT_HEAD 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_DIST_LOT_HEAD 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_DIST_LOT_HEAD INTO WA_ISU_DIST_LOT_HEAD.


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

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

*Conversion exit EXCRT, internal->external for field KURSF
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_ISU_DIST_LOT_HEAD-KURSF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISU_DIST_LOT_HEAD-KURSF.
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_DIST_LOT_HEAD_STR, 
ICON TYPE STRING,
SERV_PROV TYPE STRING,
FA_SERV_PROV TYPE STRING,
VKAGG TYPE STRING,
MANDT TYPE STRING,
KEYZ1 TYPE STRING,
KEYZ2 TYPE STRING,
APPLK TYPE STRING,
HERKF TYPE STRING,
FIKEY TYPE STRING,
BVRKO TYPE STRING,
BUKRS TYPE STRING,
GSBER TYPE STRING,
BLART TYPE STRING,
WAERS TYPE STRING,
KURSF TYPE STRING,
BUDAT TYPE STRING,
BLDAT TYPE STRING,
VALUT TYPE STRING,
XEIPH TYPE STRING,
AUGRD TYPE STRING,
ANZPO TYPE STRING,
SUMMS TYPE STRING,
SUMMH TYPE STRING,
SUMWA TYPE STRING,
ERNAM TYPE STRING,
ERDAT TYPE STRING,
ERTIM TYPE STRING,
AENAM TYPE STRING,
AEDAT TYPE STRING,
AETIM TYPE STRING,
MAXUP TYPE STRING,
MAXUV TYPE STRING,
STAZS TYPE STRING,
XEBOK TYPE STRING,
XPOSA TYPE STRING,
INFOF TYPE STRING,
KTSUS TYPE STRING,
KTSUH TYPE STRING,
KSUMP TYPE STRING,
JOBNAME TYPE STRING,
XAUTS TYPE STRING,
EXPAND TYPE STRING,
MSGID TYPE STRING,
MSGNO TYPE STRING,
MSGV1 TYPE STRING,
MSGV2 TYPE STRING,
MSGV3 TYPE STRING,
MSGV4 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ISU_DIST_LOT_HEAD_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_DIST_LOT_HEAD_STR-ICON sy-vline 
WA_ISU_DIST_LOT_HEAD_STR-SERV_PROV sy-vline 
WA_ISU_DIST_LOT_HEAD_STR-FA_SERV_PROV sy-vline 
WA_ISU_DIST_LOT_HEAD_STR-VKAGG sy-vline 
WA_ISU_DIST_LOT_HEAD_STR-MANDT sy-vline 
WA_ISU_DIST_LOT_HEAD_STR-KEYZ1 sy-vline 
WA_ISU_DIST_LOT_HEAD_STR-KEYZ2 sy-vline 
WA_ISU_DIST_LOT_HEAD_STR-APPLK sy-vline 
WA_ISU_DIST_LOT_HEAD_STR-HERKF sy-vline 
WA_ISU_DIST_LOT_HEAD_STR-FIKEY sy-vline 
WA_ISU_DIST_LOT_HEAD_STR-BVRKO sy-vline 
WA_ISU_DIST_LOT_HEAD_STR-BUKRS sy-vline 
WA_ISU_DIST_LOT_HEAD_STR-GSBER sy-vline 
WA_ISU_DIST_LOT_HEAD_STR-BLART sy-vline 
WA_ISU_DIST_LOT_HEAD_STR-WAERS sy-vline 
WA_ISU_DIST_LOT_HEAD_STR-KURSF sy-vline 
WA_ISU_DIST_LOT_HEAD_STR-BUDAT sy-vline 
WA_ISU_DIST_LOT_HEAD_STR-BLDAT sy-vline 
WA_ISU_DIST_LOT_HEAD_STR-VALUT sy-vline 
WA_ISU_DIST_LOT_HEAD_STR-XEIPH sy-vline 
WA_ISU_DIST_LOT_HEAD_STR-AUGRD sy-vline 
WA_ISU_DIST_LOT_HEAD_STR-ANZPO sy-vline 
WA_ISU_DIST_LOT_HEAD_STR-SUMMS sy-vline 
WA_ISU_DIST_LOT_HEAD_STR-SUMMH sy-vline 
WA_ISU_DIST_LOT_HEAD_STR-SUMWA sy-vline 
WA_ISU_DIST_LOT_HEAD_STR-ERNAM sy-vline 
WA_ISU_DIST_LOT_HEAD_STR-ERDAT sy-vline 
WA_ISU_DIST_LOT_HEAD_STR-ERTIM sy-vline 
WA_ISU_DIST_LOT_HEAD_STR-AENAM sy-vline 
WA_ISU_DIST_LOT_HEAD_STR-AEDAT sy-vline 
WA_ISU_DIST_LOT_HEAD_STR-AETIM sy-vline 
WA_ISU_DIST_LOT_HEAD_STR-MAXUP sy-vline 
WA_ISU_DIST_LOT_HEAD_STR-MAXUV sy-vline 
WA_ISU_DIST_LOT_HEAD_STR-STAZS sy-vline 
WA_ISU_DIST_LOT_HEAD_STR-XEBOK sy-vline 
WA_ISU_DIST_LOT_HEAD_STR-XPOSA sy-vline 
WA_ISU_DIST_LOT_HEAD_STR-INFOF sy-vline 
WA_ISU_DIST_LOT_HEAD_STR-KTSUS sy-vline 
WA_ISU_DIST_LOT_HEAD_STR-KTSUH sy-vline 
WA_ISU_DIST_LOT_HEAD_STR-KSUMP sy-vline 
WA_ISU_DIST_LOT_HEAD_STR-JOBNAME sy-vline 
WA_ISU_DIST_LOT_HEAD_STR-XAUTS sy-vline 
WA_ISU_DIST_LOT_HEAD_STR-EXPAND sy-vline 
WA_ISU_DIST_LOT_HEAD_STR-MSGID sy-vline 
WA_ISU_DIST_LOT_HEAD_STR-MSGNO sy-vline 
WA_ISU_DIST_LOT_HEAD_STR-MSGV1 sy-vline 
WA_ISU_DIST_LOT_HEAD_STR-MSGV2 sy-vline 
WA_ISU_DIST_LOT_HEAD_STR-MSGV3 sy-vline 
WA_ISU_DIST_LOT_HEAD_STR-MSGV4 sy-vline      INTO ld_text SEPARATED BY SPACE.

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