ABAP Select data from SAP table ESH_N_CC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ESH_N_CC
*  INTO TABLE @DATA(IT_ESH_N_CC2).
*--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_ESH_N_CC INDEX 1 INTO DATA(WA_ESH_N_CC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ESH_N_CC>-MANDT = 1.
<ESH_N_CC>-CONDITIONCONTRACT = 1.
<ESH_N_CC>-CREATEDBYUSER = 1.
<ESH_N_CC>-CREATIONDATE = 1.
<ESH_N_CC>-CNDNCONTRVALIDFROM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ESH_N_CC-CNDNCONTRVALIDTO, sy-vline,
  WA_ESH_N_CC-EXTERNALDOCUMENTREFERENCEID, sy-vline,
  WA_ESH_N_CC-CNDNCONTRTYPE, sy-vline,
  WA_ESH_N_CC-CNDNCONTRTYPEDESC, sy-vline,
  WA_ESH_N_CC-CUSTOMER, sy-vline,
  WA_ESH_N_CC-CUSTOMERBPUUID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ESH_N_CC 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_ESH_N_CC 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_ESH_N_CC INTO WA_ESH_N_CC.


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

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

*Conversion exit ALPHA, internal->external for field SUPPLIER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ESH_N_CC-SUPPLIER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ESH_N_CC-SUPPLIER.
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_ESH_N_CC_STR, 
MANDT TYPE STRING,
CONDITIONCONTRACT TYPE STRING,
CREATEDBYUSER TYPE STRING,
CREATIONDATE TYPE STRING,
CNDNCONTRVALIDFROM TYPE STRING,
CNDNCONTRVALIDTO TYPE STRING,
EXTERNALDOCUMENTREFERENCEID TYPE STRING,
CNDNCONTRTYPE TYPE STRING,
CNDNCONTRTYPEDESC TYPE STRING,
CUSTOMER TYPE STRING,
CUSTOMERBPUUID TYPE STRING,
CUSTOMERORGANIZATIONBPNAME1 TYPE STRING,
CUSTOMERAUTHORIZATIONGROUP TYPE STRING,
SUPPLIER TYPE STRING,
SUPPLIERBPUUID TYPE STRING,
SUPPLIERORGANIZATIONBPNAME1 TYPE STRING,
SUPPLIERAUTHORIZATIONGROUP TYPE STRING,
PURCHASINGORGANIZATION TYPE STRING,
PURCHASINGGROUP TYPE STRING,
SALESORGANIZATION TYPE STRING,
DISTRIBUTIONCHANNEL TYPE STRING,
DIVISION TYPE STRING,
CNDNCONTRISINACTIVE TYPE STRING,
CNDNCONTRISINACTIVENAME TYPE STRING,
COMPANYCODE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ESH_N_CC_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_ESH_N_CC_STR-MANDT sy-vline 
WA_ESH_N_CC_STR-CONDITIONCONTRACT sy-vline 
WA_ESH_N_CC_STR-CREATEDBYUSER sy-vline 
WA_ESH_N_CC_STR-CREATIONDATE sy-vline 
WA_ESH_N_CC_STR-CNDNCONTRVALIDFROM sy-vline 
WA_ESH_N_CC_STR-CNDNCONTRVALIDTO sy-vline 
WA_ESH_N_CC_STR-EXTERNALDOCUMENTREFERENCEID sy-vline 
WA_ESH_N_CC_STR-CNDNCONTRTYPE sy-vline 
WA_ESH_N_CC_STR-CNDNCONTRTYPEDESC sy-vline 
WA_ESH_N_CC_STR-CUSTOMER sy-vline 
WA_ESH_N_CC_STR-CUSTOMERBPUUID sy-vline 
WA_ESH_N_CC_STR-CUSTOMERORGANIZATIONBPNAME1 sy-vline 
WA_ESH_N_CC_STR-CUSTOMERAUTHORIZATIONGROUP sy-vline 
WA_ESH_N_CC_STR-SUPPLIER sy-vline 
WA_ESH_N_CC_STR-SUPPLIERBPUUID sy-vline 
WA_ESH_N_CC_STR-SUPPLIERORGANIZATIONBPNAME1 sy-vline 
WA_ESH_N_CC_STR-SUPPLIERAUTHORIZATIONGROUP sy-vline 
WA_ESH_N_CC_STR-PURCHASINGORGANIZATION sy-vline 
WA_ESH_N_CC_STR-PURCHASINGGROUP sy-vline 
WA_ESH_N_CC_STR-SALESORGANIZATION sy-vline 
WA_ESH_N_CC_STR-DISTRIBUTIONCHANNEL sy-vline 
WA_ESH_N_CC_STR-DIVISION sy-vline 
WA_ESH_N_CC_STR-CNDNCONTRISINACTIVE sy-vline 
WA_ESH_N_CC_STR-CNDNCONTRISINACTIVENAME sy-vline 
WA_ESH_N_CC_STR-COMPANYCODE sy-vline      INTO ld_text SEPARATED BY SPACE.

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