ABAP Select data from SAP table VCH_HL_S_ENG_CSTIC_DOMAINS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VCH_HL_S_ENG_CSTIC_DOMAINS
*  INTO TABLE @DATA(IT_VCH_HL_S_ENG_CSTIC_DOMAINS2).
*--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_VCH_HL_S_ENG_CSTIC_DOMAINS INDEX 1 INTO DATA(WA_VCH_HL_S_ENG_CSTIC_DOMAINS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VCH_HL_S_ENG_CSTIC_DOMAINS>-ITERATION_INDEX = 1.
<VCH_HL_S_ENG_CSTIC_DOMAINS>-INSTANCE_ID = 1.
<VCH_HL_S_ENG_CSTIC_DOMAINS>-CSTIC_ID = 1.
<VCH_HL_S_ENG_CSTIC_DOMAINS>-VALUE_STRING = 1.
<VCH_HL_S_ENG_CSTIC_DOMAINS>-VALUE_INT_MIN = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VCH_HL_S_ENG_CSTIC_DOMAINS-VALUE_INT_MAX, sy-vline,
  WA_VCH_HL_S_ENG_CSTIC_DOMAINS-VALUE_FLOAT_MIN, sy-vline,
  WA_VCH_HL_S_ENG_CSTIC_DOMAINS-VALUE_FLOAT_MAX, sy-vline,
  WA_VCH_HL_S_ENG_CSTIC_DOMAINS-INTERVAL_TYPE, sy-vline,
  WA_VCH_HL_S_ENG_CSTIC_DOMAINS-ASSIGNMENT_TYPE, sy-vline,
  WA_VCH_HL_S_ENG_CSTIC_DOMAINS-VALUE_KNOBJ, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VCH_HL_S_ENG_CSTIC_DOMAINS 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_VCH_HL_S_ENG_CSTIC_DOMAINS 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_VCH_HL_S_ENG_CSTIC_DOMAINS INTO WA_VCH_HL_S_ENG_CSTIC_DOMAINS.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_VCH_HL_S_ENG_CSTIC_DOMAINS_STR, 
ITERATION_INDEX TYPE STRING,
INSTANCE_ID TYPE STRING,
CSTIC_ID TYPE STRING,
VALUE_STRING TYPE STRING,
VALUE_INT_MIN TYPE STRING,
VALUE_INT_MAX TYPE STRING,
VALUE_FLOAT_MIN TYPE STRING,
VALUE_FLOAT_MAX TYPE STRING,
INTERVAL_TYPE TYPE STRING,
ASSIGNMENT_TYPE TYPE STRING,
VALUE_KNOBJ TYPE STRING,
VALUE_ID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VCH_HL_S_ENG_CSTIC_DOMAINS_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_VCH_HL_S_ENG_CSTIC_DOMAINS_STR-ITERATION_INDEX sy-vline 
WA_VCH_HL_S_ENG_CSTIC_DOMAINS_STR-INSTANCE_ID sy-vline 
WA_VCH_HL_S_ENG_CSTIC_DOMAINS_STR-CSTIC_ID sy-vline 
WA_VCH_HL_S_ENG_CSTIC_DOMAINS_STR-VALUE_STRING sy-vline 
WA_VCH_HL_S_ENG_CSTIC_DOMAINS_STR-VALUE_INT_MIN sy-vline 
WA_VCH_HL_S_ENG_CSTIC_DOMAINS_STR-VALUE_INT_MAX sy-vline 
WA_VCH_HL_S_ENG_CSTIC_DOMAINS_STR-VALUE_FLOAT_MIN sy-vline 
WA_VCH_HL_S_ENG_CSTIC_DOMAINS_STR-VALUE_FLOAT_MAX sy-vline 
WA_VCH_HL_S_ENG_CSTIC_DOMAINS_STR-INTERVAL_TYPE sy-vline 
WA_VCH_HL_S_ENG_CSTIC_DOMAINS_STR-ASSIGNMENT_TYPE sy-vline 
WA_VCH_HL_S_ENG_CSTIC_DOMAINS_STR-VALUE_KNOBJ sy-vline 
WA_VCH_HL_S_ENG_CSTIC_DOMAINS_STR-VALUE_ID sy-vline      INTO ld_text SEPARATED BY SPACE.

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