ABAP Select data from SAP table CEHSCALHQ into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CEHSCALHQ
*  INTO TABLE @DATA(IT_CEHSCALHQ2).
*--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_CEHSCALHQ INDEX 1 INTO DATA(WA_CEHSCALHQ2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CEHSCALHQ>-MANDT = 1.
<CEHSCALHQ>-WORKFLOWTASKINTERNALID = 1.
<CEHSCALHQ>-EHSTASKDEFINITIONUUID = 1.
<CEHSCALHQ>-EHSTASKHOSTOBJECTINSTANCE = 1.
<CEHSCALHQ>-EHSTASKSTATUSVALUEFORSORTING = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CEHSCALHQ-EHSLOCATIONTYPE, sy-vline,
  WA_CEHSCALHQ-EHSLOCATIONUUID, sy-vline,
  WA_CEHSCALHQ-EHSLOCATIONUUIDHEX, sy-vline,
  WA_CEHSCALHQ-CMPLRQVERSNAME, sy-vline,
  WA_CEHSCALHQ-EHSTASKDUEDATE, sy-vline,
  WA_CEHSCALHQ-EHSTASKHOSTSEMANTICOBJECT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CEHSCALHQ 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_CEHSCALHQ 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_CEHSCALHQ INTO WA_CEHSCALHQ.


*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_CEHSCALHQ_STR, 
MANDT TYPE STRING,
WORKFLOWTASKINTERNALID TYPE STRING,
EHSTASKDEFINITIONUUID TYPE STRING,
EHSTASKHOSTOBJECTINSTANCE TYPE STRING,
EHSTASKSTATUSVALUEFORSORTING TYPE STRING,
EHSLOCATIONTYPE TYPE STRING,
EHSLOCATIONUUID TYPE STRING,
EHSLOCATIONUUIDHEX TYPE STRING,
CMPLRQVERSNAME TYPE STRING,
EHSTASKDUEDATE TYPE STRING,
EHSTASKHOSTSEMANTICOBJECT TYPE STRING,
EHSNUMBEROFERRORTASKS TYPE STRING,
EHSNUMBEROFOVERDUETASKS TYPE STRING,
EHSNUMBEROFDUETASKS TYPE STRING,
EHSNUMBEROFSCHEDULEDTASKS TYPE STRING,
EHSNUMBEROFCOMPLETEDTASKS TYPE STRING,
EHSNUMBEROFTASKS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CEHSCALHQ_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_CEHSCALHQ_STR-MANDT sy-vline 
WA_CEHSCALHQ_STR-WORKFLOWTASKINTERNALID sy-vline 
WA_CEHSCALHQ_STR-EHSTASKDEFINITIONUUID sy-vline 
WA_CEHSCALHQ_STR-EHSTASKHOSTOBJECTINSTANCE sy-vline 
WA_CEHSCALHQ_STR-EHSTASKSTATUSVALUEFORSORTING sy-vline 
WA_CEHSCALHQ_STR-EHSLOCATIONTYPE sy-vline 
WA_CEHSCALHQ_STR-EHSLOCATIONUUID sy-vline 
WA_CEHSCALHQ_STR-EHSLOCATIONUUIDHEX sy-vline 
WA_CEHSCALHQ_STR-CMPLRQVERSNAME sy-vline 
WA_CEHSCALHQ_STR-EHSTASKDUEDATE sy-vline 
WA_CEHSCALHQ_STR-EHSTASKHOSTSEMANTICOBJECT sy-vline 
WA_CEHSCALHQ_STR-EHSNUMBEROFERRORTASKS sy-vline 
WA_CEHSCALHQ_STR-EHSNUMBEROFOVERDUETASKS sy-vline 
WA_CEHSCALHQ_STR-EHSNUMBEROFDUETASKS sy-vline 
WA_CEHSCALHQ_STR-EHSNUMBEROFSCHEDULEDTASKS sy-vline 
WA_CEHSCALHQ_STR-EHSNUMBEROFCOMPLETEDTASKS sy-vline 
WA_CEHSCALHQ_STR-EHSNUMBEROFTASKS sy-vline      INTO ld_text SEPARATED BY SPACE.

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