ABAP Select data from SAP table EPIC_S_CB_LQITEM_DISPLAY into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EPIC_S_CB_LQITEM_DISPLAY
*  INTO TABLE @DATA(IT_EPIC_S_CB_LQITEM_DISPLAY2).
*--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_EPIC_S_CB_LQITEM_DISPLAY INDEX 1 INTO DATA(WA_EPIC_S_CB_LQITEM_DISPLAY2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EPIC_S_CB_LQITEM_DISPLAY>-TREE_ID = 1.
<EPIC_S_CB_LQITEM_DISPLAY>-TREE_PARENT_ID = 1.
<EPIC_S_CB_LQITEM_DISPLAY>-LQITEM_ID = 1.
<EPIC_S_CB_LQITEM_DISPLAY>-LQNAME = 1.
<EPIC_S_CB_LQITEM_DISPLAY>-PARENT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EPIC_S_CB_LQITEM_DISPLAY-VENDOR, sy-vline,
  WA_EPIC_S_CB_LQITEM_DISPLAY-CUSTOMER, sy-vline,
  WA_EPIC_S_CB_LQITEM_DISPLAY-DIRECTION, sy-vline,
  WA_EPIC_S_CB_LQITEM_DISPLAY-DIRECTION_DESCR, sy-vline,
  WA_EPIC_S_CB_LQITEM_DISPLAY-PLAN_AMOUNT, sy-vline,
  WA_EPIC_S_CB_LQITEM_DISPLAY-CONSUME_AMNT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EPIC_S_CB_LQITEM_DISPLAY 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_EPIC_S_CB_LQITEM_DISPLAY 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_EPIC_S_CB_LQITEM_DISPLAY INTO WA_EPIC_S_CB_LQITEM_DISPLAY.


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

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

*Conversion exit AU172, internal->external for field PLAN_AMOUNT
CALL FUNCTION 'CONVERSION_EXIT_AU172_OUTPUT'
  EXPORTING
    input =                      WA_EPIC_S_CB_LQITEM_DISPLAY-PLAN_AMOUNT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EPIC_S_CB_LQITEM_DISPLAY-PLAN_AMOUNT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC172, internal->external for field CONSUME_AMNT
CALL FUNCTION 'CONVERSION_EXIT_AC172_OUTPUT'
  EXPORTING
    input =                      WA_EPIC_S_CB_LQITEM_DISPLAY-CONSUME_AMNT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EPIC_S_CB_LQITEM_DISPLAY-CONSUME_AMNT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU172, internal->external for field REMAIN_AMNT
CALL FUNCTION 'CONVERSION_EXIT_AU172_OUTPUT'
  EXPORTING
    input =                      WA_EPIC_S_CB_LQITEM_DISPLAY-REMAIN_AMNT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EPIC_S_CB_LQITEM_DISPLAY-REMAIN_AMNT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU172, internal->external for field RESERVE_AMNT
CALL FUNCTION 'CONVERSION_EXIT_AU172_OUTPUT'
  EXPORTING
    input =                      WA_EPIC_S_CB_LQITEM_DISPLAY-RESERVE_AMNT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EPIC_S_CB_LQITEM_DISPLAY-RESERVE_AMNT.
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_EPIC_S_CB_LQITEM_DISPLAY_STR, 
TREE_ID TYPE STRING,
TREE_PARENT_ID TYPE STRING,
LQITEM_ID TYPE STRING,
LQNAME TYPE STRING,
PARENT TYPE STRING,
VENDOR TYPE STRING,
CUSTOMER TYPE STRING,
DIRECTION TYPE STRING,
DIRECTION_DESCR TYPE STRING,
PLAN_AMOUNT TYPE STRING,
CONSUME_AMNT TYPE STRING,
REMAIN_AMNT TYPE STRING,
RESERVE_AMNT TYPE STRING,
CURRENCY TYPE STRING,
EXTEND_ATTR1 TYPE STRING,
EXTEND_ATTR2 TYPE STRING,
EXTEND_ATTR3 TYPE STRING,
EXTEND_ATTR4 TYPE STRING,
CSM_AVAIL TYPE STRING,
MSGTY TYPE STRING,
MSGID TYPE STRING,
MSGNO TYPE STRING,
MSGV1 TYPE STRING,
MSGV2 TYPE STRING,
MSGV3 TYPE STRING,
MSGV4 TYPE STRING,
IS_FOLDER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EPIC_S_CB_LQITEM_DISPLAY_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_EPIC_S_CB_LQITEM_DISPLAY_STR-TREE_ID sy-vline 
WA_EPIC_S_CB_LQITEM_DISPLAY_STR-TREE_PARENT_ID sy-vline 
WA_EPIC_S_CB_LQITEM_DISPLAY_STR-LQITEM_ID sy-vline 
WA_EPIC_S_CB_LQITEM_DISPLAY_STR-LQNAME sy-vline 
WA_EPIC_S_CB_LQITEM_DISPLAY_STR-PARENT sy-vline 
WA_EPIC_S_CB_LQITEM_DISPLAY_STR-VENDOR sy-vline 
WA_EPIC_S_CB_LQITEM_DISPLAY_STR-CUSTOMER sy-vline 
WA_EPIC_S_CB_LQITEM_DISPLAY_STR-DIRECTION sy-vline 
WA_EPIC_S_CB_LQITEM_DISPLAY_STR-DIRECTION_DESCR sy-vline 
WA_EPIC_S_CB_LQITEM_DISPLAY_STR-PLAN_AMOUNT sy-vline 
WA_EPIC_S_CB_LQITEM_DISPLAY_STR-CONSUME_AMNT sy-vline 
WA_EPIC_S_CB_LQITEM_DISPLAY_STR-REMAIN_AMNT sy-vline 
WA_EPIC_S_CB_LQITEM_DISPLAY_STR-RESERVE_AMNT sy-vline 
WA_EPIC_S_CB_LQITEM_DISPLAY_STR-CURRENCY sy-vline 
WA_EPIC_S_CB_LQITEM_DISPLAY_STR-EXTEND_ATTR1 sy-vline 
WA_EPIC_S_CB_LQITEM_DISPLAY_STR-EXTEND_ATTR2 sy-vline 
WA_EPIC_S_CB_LQITEM_DISPLAY_STR-EXTEND_ATTR3 sy-vline 
WA_EPIC_S_CB_LQITEM_DISPLAY_STR-EXTEND_ATTR4 sy-vline 
WA_EPIC_S_CB_LQITEM_DISPLAY_STR-CSM_AVAIL sy-vline 
WA_EPIC_S_CB_LQITEM_DISPLAY_STR-MSGTY sy-vline 
WA_EPIC_S_CB_LQITEM_DISPLAY_STR-MSGID sy-vline 
WA_EPIC_S_CB_LQITEM_DISPLAY_STR-MSGNO sy-vline 
WA_EPIC_S_CB_LQITEM_DISPLAY_STR-MSGV1 sy-vline 
WA_EPIC_S_CB_LQITEM_DISPLAY_STR-MSGV2 sy-vline 
WA_EPIC_S_CB_LQITEM_DISPLAY_STR-MSGV3 sy-vline 
WA_EPIC_S_CB_LQITEM_DISPLAY_STR-MSGV4 sy-vline 
WA_EPIC_S_CB_LQITEM_DISPLAY_STR-IS_FOLDER sy-vline      INTO ld_text SEPARATED BY SPACE.

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