ABAP Select data from SAP table ISI_ESP_STOCK into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ISI_ESP_STOCK
*  INTO TABLE @DATA(IT_ISI_ESP_STOCK2).
*--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_ISI_ESP_STOCK INDEX 1 INTO DATA(WA_ISI_ESP_STOCK2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ISI_ESP_STOCK>-LIFNR = 1.
<ISI_ESP_STOCK>-PLANT = 1.
<ISI_ESP_STOCK>-NAME1 = 1.
<ISI_ESP_STOCK>-LGORT = 1.
<ISI_ESP_STOCK>-LGOBE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ISI_ESP_STOCK-MATNR, sy-vline,
  WA_ISI_ESP_STOCK-QUANTITY, sy-vline,
  WA_ISI_ESP_STOCK-KONSI, sy-vline,
  WA_ISI_ESP_STOCK-VRKME, sy-vline,
  WA_ISI_ESP_STOCK-MEINS, sy-vline,
  WA_ISI_ESP_STOCK-SOBKZ, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ISI_ESP_STOCK 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_ISI_ESP_STOCK 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_ISI_ESP_STOCK INTO WA_ISI_ESP_STOCK.


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

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

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

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

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

*Conversion exit MATNL, internal->external for field MATNR_EXT
CALL FUNCTION 'CONVERSION_EXIT_MATNL_OUTPUT'
  EXPORTING
    input =                      WA_ISI_ESP_STOCK-MATNR_EXT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISI_ESP_STOCK-MATNR_EXT.
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_ISI_ESP_STOCK_STR, 
LIFNR TYPE STRING,
PLANT TYPE STRING,
NAME1 TYPE STRING,
LGORT TYPE STRING,
LGOBE TYPE STRING,
MATNR TYPE STRING,
QUANTITY TYPE STRING,
KONSI TYPE STRING,
VRKME TYPE STRING,
MEINS TYPE STRING,
SOBKZ TYPE STRING,
INSMK TYPE STRING,
INSMK_TXT TYPE STRING,
ESP TYPE STRING,
XCHPF TYPE STRING,
CHAR_DATA TYPE STRING,
IDNLF TYPE STRING,
LICHA TYPE STRING,
MATNR_EXT TYPE STRING,
MAKTX TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ISI_ESP_STOCK_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_ISI_ESP_STOCK_STR-LIFNR sy-vline 
WA_ISI_ESP_STOCK_STR-PLANT sy-vline 
WA_ISI_ESP_STOCK_STR-NAME1 sy-vline 
WA_ISI_ESP_STOCK_STR-LGORT sy-vline 
WA_ISI_ESP_STOCK_STR-LGOBE sy-vline 
WA_ISI_ESP_STOCK_STR-MATNR sy-vline 
WA_ISI_ESP_STOCK_STR-QUANTITY sy-vline 
WA_ISI_ESP_STOCK_STR-KONSI sy-vline 
WA_ISI_ESP_STOCK_STR-VRKME sy-vline 
WA_ISI_ESP_STOCK_STR-MEINS sy-vline 
WA_ISI_ESP_STOCK_STR-SOBKZ sy-vline 
WA_ISI_ESP_STOCK_STR-INSMK sy-vline 
WA_ISI_ESP_STOCK_STR-INSMK_TXT sy-vline 
WA_ISI_ESP_STOCK_STR-ESP sy-vline 
WA_ISI_ESP_STOCK_STR-XCHPF sy-vline 
WA_ISI_ESP_STOCK_STR-CHAR_DATA sy-vline 
WA_ISI_ESP_STOCK_STR-IDNLF sy-vline 
WA_ISI_ESP_STOCK_STR-LICHA sy-vline 
WA_ISI_ESP_STOCK_STR-MATNR_EXT sy-vline 
WA_ISI_ESP_STOCK_STR-MAKTX sy-vline      INTO ld_text SEPARATED BY SPACE.

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