ABAP Select data from SAP table CCIHS_ERSTIOT into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP CCIHS_ERSTIOT 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_ERSTIOT. 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_ERSTIOT 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_ERSTIOT TYPE STANDARD TABLE OF CCIHS_ERSTIOT,
      WA_CCIHS_ERSTIOT TYPE CCIHS_ERSTIOT,
      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_ERSTIOT> TYPE CCIHS_ERSTIOT.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CCIHS_ERSTIOT
*  INTO TABLE @DATA(IT_CCIHS_ERSTIOT2).
*--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_ERSTIOT INDEX 1 INTO DATA(WA_CCIHS_ERSTIOT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CCIHS_ERSTIOT>-MARKFLG = 1.
<CCIHS_ERSTIOT>-SELEFLG = 1.
<CCIHS_ERSTIOT>-LINENO = 1.
<CCIHS_ERSTIOT>-LINEMOD = 1.
<CCIHS_ERSTIOT>-CHCOFLG = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CCIHS_ERSTIOT-LOCKMOD, sy-vline,
  WA_CCIHS_ERSTIOT-INTRFLG, sy-vline,
  WA_CCIHS_ERSTIOT-MANDT, sy-vline,
  WA_CCIHS_ERSTIOT-RECN, sy-vline,
  WA_CCIHS_ERSTIOT-ACTN, sy-vline,
  WA_CCIHS_ERSTIOT-ERSTATUS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CCIHS_ERSTIOT 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_ERSTIOT 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_ERSTIOT INTO WA_CCIHS_ERSTIOT.


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

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

*Conversion exit ALPHA, internal->external for field RECNROOT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CCIHS_ERSTIOT-RECNROOT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CCIHS_ERSTIOT-RECNROOT.
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_ERSTIOT_STR, 
MARKFLG TYPE STRING,
SELEFLG TYPE STRING,
LINENO TYPE STRING,
LINEMOD TYPE STRING,
CHCOFLG TYPE STRING,
LOCKMOD TYPE STRING,
INTRFLG TYPE STRING,
MANDT TYPE STRING,
RECN TYPE STRING,
ACTN TYPE STRING,
ERSTATUS TYPE STRING,
ERSHSTATNAM TYPE STRING,
ERSTATNAM TYPE STRING,
RECNROOT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CCIHS_ERSTIOT_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_ERSTIOT_STR-MARKFLG sy-vline 
WA_CCIHS_ERSTIOT_STR-SELEFLG sy-vline 
WA_CCIHS_ERSTIOT_STR-LINENO sy-vline 
WA_CCIHS_ERSTIOT_STR-LINEMOD sy-vline 
WA_CCIHS_ERSTIOT_STR-CHCOFLG sy-vline 
WA_CCIHS_ERSTIOT_STR-LOCKMOD sy-vline 
WA_CCIHS_ERSTIOT_STR-INTRFLG sy-vline 
WA_CCIHS_ERSTIOT_STR-MANDT sy-vline 
WA_CCIHS_ERSTIOT_STR-RECN sy-vline 
WA_CCIHS_ERSTIOT_STR-ACTN sy-vline 
WA_CCIHS_ERSTIOT_STR-ERSTATUS sy-vline 
WA_CCIHS_ERSTIOT_STR-ERSHSTATNAM sy-vline 
WA_CCIHS_ERSTIOT_STR-ERSTATNAM sy-vline 
WA_CCIHS_ERSTIOT_STR-RECNROOT sy-vline      INTO ld_text SEPARATED BY SPACE.

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