ABAP Select data from SAP table EISU_IL_MD_EDISCACT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EISU_IL_MD_EDISCACT
*  INTO TABLE @DATA(IT_EISU_IL_MD_EDISCACT2).
*--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_EISU_IL_MD_EDISCACT INDEX 1 INTO DATA(WA_EISU_IL_MD_EDISCACT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EISU_IL_MD_EDISCACT>-DISCNO = 1.
<EISU_IL_MD_EDISCACT>-DISCACT = 1.
<EISU_IL_MD_EDISCACT>-DISCACTTYP = 1.
<EISU_IL_MD_EDISCACT>-ACTDATE = 1.
<EISU_IL_MD_EDISCACT>-ACTTIME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EISU_IL_MD_EDISCACT-ORDSTATE, sy-vline,
  WA_EISU_IL_MD_EDISCACT-ORDERNUM, sy-vline,
  WA_EISU_IL_MD_EDISCACT-BC_CONTACT, sy-vline,
  WA_EISU_IL_MD_EDISCACT-ORDERACT, sy-vline,
  WA_EISU_IL_MD_EDISCACT-BBPCHANGED, sy-vline,
  WA_EISU_IL_MD_EDISCACT-DISCCANCELD, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EISU_IL_MD_EDISCACT 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_EISU_IL_MD_EDISCACT 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_EISU_IL_MD_EDISCACT INTO WA_EISU_IL_MD_EDISCACT.


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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field CHARGE_OPBEL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EISU_IL_MD_EDISCACT-CHARGE_OPBEL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EISU_IL_MD_EDISCACT-CHARGE_OPBEL.
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_EISU_IL_MD_EDISCACT_STR, 
DISCNO TYPE STRING,
DISCACT TYPE STRING,
DISCACTTYP TYPE STRING,
ACTDATE TYPE STRING,
ACTTIME TYPE STRING,
ORDSTATE TYPE STRING,
ORDERNUM TYPE STRING,
BC_CONTACT TYPE STRING,
ORDERACT TYPE STRING,
BBPCHANGED TYPE STRING,
DISCCANCELD TYPE STRING,
VACANTACT TYPE STRING,
INTERIM_BILLING TYPE STRING,
BC_TYPE TYPE STRING,
BC_CLASS TYPE STRING,
BC_ACTVT TYPE STRING,
CH_VKONT TYPE STRING,
CH_GPART TYPE STRING,
CODETEXT TYPE STRING,
TYPTEXT TYPE STRING,
IS_CHANGEABLE TYPE STRING,
IS_REMOTE_CHANGEABLE TYPE STRING,
REQUEST_REMOTE TYPE STRING,
SMART_METER TYPE STRING,
ACTTYPTXT TYPE STRING,
ORDSTATETXT TYPE STRING,
CHARGE_OPBEL TYPE STRING,
SMORDERTYPE TYPE STRING,
APRVL_REQD TYPE STRING,
APRVL_DATE TYPE STRING,
APRVL_TIME TYPE STRING,
APRVD_DATE TYPE STRING,
APRVD_TIME TYPE STRING,
WORKITEM TYPE STRING,
APRVL_AGENT TYPE STRING,
APRVL_SRC TYPE STRING,
APRVL_SRCTEXT TYPE STRING,
AMIACT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EISU_IL_MD_EDISCACT_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_EISU_IL_MD_EDISCACT_STR-DISCNO sy-vline 
WA_EISU_IL_MD_EDISCACT_STR-DISCACT sy-vline 
WA_EISU_IL_MD_EDISCACT_STR-DISCACTTYP sy-vline 
WA_EISU_IL_MD_EDISCACT_STR-ACTDATE sy-vline 
WA_EISU_IL_MD_EDISCACT_STR-ACTTIME sy-vline 
WA_EISU_IL_MD_EDISCACT_STR-ORDSTATE sy-vline 
WA_EISU_IL_MD_EDISCACT_STR-ORDERNUM sy-vline 
WA_EISU_IL_MD_EDISCACT_STR-BC_CONTACT sy-vline 
WA_EISU_IL_MD_EDISCACT_STR-ORDERACT sy-vline 
WA_EISU_IL_MD_EDISCACT_STR-BBPCHANGED sy-vline 
WA_EISU_IL_MD_EDISCACT_STR-DISCCANCELD sy-vline 
WA_EISU_IL_MD_EDISCACT_STR-VACANTACT sy-vline 
WA_EISU_IL_MD_EDISCACT_STR-INTERIM_BILLING sy-vline 
WA_EISU_IL_MD_EDISCACT_STR-BC_TYPE sy-vline 
WA_EISU_IL_MD_EDISCACT_STR-BC_CLASS sy-vline 
WA_EISU_IL_MD_EDISCACT_STR-BC_ACTVT sy-vline 
WA_EISU_IL_MD_EDISCACT_STR-CH_VKONT sy-vline 
WA_EISU_IL_MD_EDISCACT_STR-CH_GPART sy-vline 
WA_EISU_IL_MD_EDISCACT_STR-CODETEXT sy-vline 
WA_EISU_IL_MD_EDISCACT_STR-TYPTEXT sy-vline 
WA_EISU_IL_MD_EDISCACT_STR-IS_CHANGEABLE sy-vline 
WA_EISU_IL_MD_EDISCACT_STR-IS_REMOTE_CHANGEABLE sy-vline 
WA_EISU_IL_MD_EDISCACT_STR-REQUEST_REMOTE sy-vline 
WA_EISU_IL_MD_EDISCACT_STR-SMART_METER sy-vline 
WA_EISU_IL_MD_EDISCACT_STR-ACTTYPTXT sy-vline 
WA_EISU_IL_MD_EDISCACT_STR-ORDSTATETXT sy-vline 
WA_EISU_IL_MD_EDISCACT_STR-CHARGE_OPBEL sy-vline 
WA_EISU_IL_MD_EDISCACT_STR-SMORDERTYPE sy-vline 
WA_EISU_IL_MD_EDISCACT_STR-APRVL_REQD sy-vline 
WA_EISU_IL_MD_EDISCACT_STR-APRVL_DATE sy-vline 
WA_EISU_IL_MD_EDISCACT_STR-APRVL_TIME sy-vline 
WA_EISU_IL_MD_EDISCACT_STR-APRVD_DATE sy-vline 
WA_EISU_IL_MD_EDISCACT_STR-APRVD_TIME sy-vline 
WA_EISU_IL_MD_EDISCACT_STR-WORKITEM sy-vline 
WA_EISU_IL_MD_EDISCACT_STR-APRVL_AGENT sy-vline 
WA_EISU_IL_MD_EDISCACT_STR-APRVL_SRC sy-vline 
WA_EISU_IL_MD_EDISCACT_STR-APRVL_SRCTEXT sy-vline 
WA_EISU_IL_MD_EDISCACT_STR-AMIACT sy-vline      INTO ld_text SEPARATED BY SPACE.

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