ABAP Select data from SAP table CCIHS_EREVHITS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CCIHS_EREVHITS
*  INTO TABLE @DATA(IT_CCIHS_EREVHITS2).
*--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_CCIHS_EREVHITS INDEX 1 INTO DATA(WA_CCIHS_EREVHITS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CCIHS_EREVHITS>-ERRICON = 1.
<CCIHS_EREVHITS>-EPID = 1.
<CCIHS_EREVHITS>-EPTYPE = 1.
<CCIHS_EREVHITS>-WAID = 1.
<CCIHS_EREVHITS>-WANAM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CCIHS_EREVHITS-WAPLANT, sy-vline,
  WA_CCIHS_EREVHITS-WAPLANTNAM, sy-vline,
  WA_CCIHS_EREVHITS-OPCOND, sy-vline,
  WA_CCIHS_EREVHITS-OPCONDTXT, sy-vline,
  WA_CCIHS_EREVHITS-ERSTATUS, sy-vline,
  WA_CCIHS_EREVHITS-ERSHSTATNAM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CCIHS_EREVHITS 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_CCIHS_EREVHITS 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_CCIHS_EREVHITS INTO WA_CCIHS_EREVHITS.


*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 CHRID, internal->external for field WAID
CALL FUNCTION 'CONVERSION_EXIT_CHRID_OUTPUT'
  EXPORTING
    input =                      WA_CCIHS_EREVHITS-WAID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CCIHS_EREVHITS-WAID.
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_CCIHS_EREVHITS_STR, 
ERRICON TYPE STRING,
EPID TYPE STRING,
EPTYPE TYPE STRING,
WAID TYPE STRING,
WANAM TYPE STRING,
WAPLANT TYPE STRING,
WAPLANTNAM TYPE STRING,
OPCOND TYPE STRING,
OPCONDTXT TYPE STRING,
ERSTATUS TYPE STRING,
ERSHSTATNAM TYPE STRING,
ERSTATNAM TYPE STRING,
MARKFLG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CCIHS_EREVHITS_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_CCIHS_EREVHITS_STR-ERRICON sy-vline 
WA_CCIHS_EREVHITS_STR-EPID sy-vline 
WA_CCIHS_EREVHITS_STR-EPTYPE sy-vline 
WA_CCIHS_EREVHITS_STR-WAID sy-vline 
WA_CCIHS_EREVHITS_STR-WANAM sy-vline 
WA_CCIHS_EREVHITS_STR-WAPLANT sy-vline 
WA_CCIHS_EREVHITS_STR-WAPLANTNAM sy-vline 
WA_CCIHS_EREVHITS_STR-OPCOND sy-vline 
WA_CCIHS_EREVHITS_STR-OPCONDTXT sy-vline 
WA_CCIHS_EREVHITS_STR-ERSTATUS sy-vline 
WA_CCIHS_EREVHITS_STR-ERSHSTATNAM sy-vline 
WA_CCIHS_EREVHITS_STR-ERSTATNAM sy-vline 
WA_CCIHS_EREVHITS_STR-MARKFLG sy-vline      INTO ld_text SEPARATED BY SPACE.

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