ABAP Select data from SAP table CTECHOBJVH into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP CTECHOBJVH 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 CTECHOBJVH. 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 CTECHOBJVH 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_CTECHOBJVH TYPE STANDARD TABLE OF CTECHOBJVH,
      WA_CTECHOBJVH TYPE CTECHOBJVH,
      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: <CTECHOBJVH> TYPE CTECHOBJVH.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CTECHOBJVH
*  INTO TABLE @DATA(IT_CTECHOBJVH2).
*--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_CTECHOBJVH INDEX 1 INTO DATA(WA_CTECHOBJVH2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CTECHOBJVH>-MANDT = 1.
<CTECHOBJVH>-TECHNICALOBJECT = 1.
<CTECHOBJVH>-TECHOBJISEQUIPORFUNCNLLOC = 1.
<CTECHOBJVH>-TECHNICALOBJECTLABEL = 1.
<CTECHOBJVH>-EQUIPMENTWITHLEADINGZEROS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CTECHOBJVH-FUNCTIONALLOCATIONLABELNAME, sy-vline,
  WA_CTECHOBJVH-TECHNICALOBJECTDESCRIPTION, sy-vline,
  WA_CTECHOBJVH-EQUIPMENT, sy-vline,
  WA_CTECHOBJVH-MAINTENANCEPLANNINGPLANT, sy-vline,
  WA_CTECHOBJVH-MAINTENANCEPLANNERGROUP, sy-vline,
  WA_CTECHOBJVH-AUTHORIZATIONGROUP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CTECHOBJVH 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_CTECHOBJVH 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_CTECHOBJVH INTO WA_CTECHOBJVH.


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

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

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

*Conversion exit ALPHA, internal->external for field COSTCENTER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CTECHOBJVH-COSTCENTER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CTECHOBJVH-COSTCENTER.
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_CTECHOBJVH_STR, 
MANDT TYPE STRING,
TECHNICALOBJECT TYPE STRING,
TECHOBJISEQUIPORFUNCNLLOC TYPE STRING,
TECHNICALOBJECTLABEL TYPE STRING,
EQUIPMENTWITHLEADINGZEROS TYPE STRING,
FUNCTIONALLOCATIONLABELNAME TYPE STRING,
TECHNICALOBJECTDESCRIPTION TYPE STRING,
EQUIPMENT TYPE STRING,
MAINTENANCEPLANNINGPLANT TYPE STRING,
MAINTENANCEPLANNERGROUP TYPE STRING,
AUTHORIZATIONGROUP TYPE STRING,
TECHNICALOBJECTCATEGORY TYPE STRING,
TECHNICALOBJECTTYPE TYPE STRING,
MAINTOBJECTLOCACCTASSGMTNMBR TYPE STRING,
MAINTENANCEPLANT TYPE STRING,
COSTCENTER TYPE STRING,
CONTROLLINGAREA TYPE STRING,
TECHOBJINSTALLATIONLOCATION TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CTECHOBJVH_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_CTECHOBJVH_STR-MANDT sy-vline 
WA_CTECHOBJVH_STR-TECHNICALOBJECT sy-vline 
WA_CTECHOBJVH_STR-TECHOBJISEQUIPORFUNCNLLOC sy-vline 
WA_CTECHOBJVH_STR-TECHNICALOBJECTLABEL sy-vline 
WA_CTECHOBJVH_STR-EQUIPMENTWITHLEADINGZEROS sy-vline 
WA_CTECHOBJVH_STR-FUNCTIONALLOCATIONLABELNAME sy-vline 
WA_CTECHOBJVH_STR-TECHNICALOBJECTDESCRIPTION sy-vline 
WA_CTECHOBJVH_STR-EQUIPMENT sy-vline 
WA_CTECHOBJVH_STR-MAINTENANCEPLANNINGPLANT sy-vline 
WA_CTECHOBJVH_STR-MAINTENANCEPLANNERGROUP sy-vline 
WA_CTECHOBJVH_STR-AUTHORIZATIONGROUP sy-vline 
WA_CTECHOBJVH_STR-TECHNICALOBJECTCATEGORY sy-vline 
WA_CTECHOBJVH_STR-TECHNICALOBJECTTYPE sy-vline 
WA_CTECHOBJVH_STR-MAINTOBJECTLOCACCTASSGMTNMBR sy-vline 
WA_CTECHOBJVH_STR-MAINTENANCEPLANT sy-vline 
WA_CTECHOBJVH_STR-COSTCENTER sy-vline 
WA_CTECHOBJVH_STR-CONTROLLINGAREA sy-vline 
WA_CTECHOBJVH_STR-TECHOBJINSTALLATIONLOCATION sy-vline      INTO ld_text SEPARATED BY SPACE.

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