ABAP Select data from SAP table GRAC_S_BI_REQ_A into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM GRAC_S_BI_REQ_A
*  INTO TABLE @DATA(IT_GRAC_S_BI_REQ_A2).
*--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_GRAC_S_BI_REQ_A INDEX 1 INTO DATA(WA_GRAC_S_BI_REQ_A2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<GRAC_S_BI_REQ_A>-REQ_ID = 1.
<GRAC_S_BI_REQ_A>-REQNO = 1.
<GRAC_S_BI_REQ_A>-REQ_CREATED = 1.
<GRAC_S_BI_REQ_A>-DUEDATE = 1.
<GRAC_S_BI_REQ_A>-REQTYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_GRAC_S_BI_REQ_A-PRIORITY, sy-vline,
  WA_GRAC_S_BI_REQ_A-BPROC, sy-vline,
  WA_GRAC_S_BI_REQ_A-FUNCAREA, sy-vline,
  WA_GRAC_S_BI_REQ_A-REQ_COMPLETED, sy-vline,
  WA_GRAC_S_BI_REQ_A-BGJOBID, sy-vline,
  WA_GRAC_S_BI_REQ_A-BGJOBCNT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_GRAC_S_BI_REQ_A 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_GRAC_S_BI_REQ_A 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_GRAC_S_BI_REQ_A INTO WA_GRAC_S_BI_REQ_A.


*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_GRAC_S_BI_REQ_A_STR, 
REQ_ID TYPE STRING,
REQNO TYPE STRING,
REQ_CREATED TYPE STRING,
DUEDATE TYPE STRING,
REQTYPE TYPE STRING,
PRIORITY TYPE STRING,
BPROC TYPE STRING,
FUNCAREA TYPE STRING,
REQ_COMPLETED TYPE STRING,
BGJOBID TYPE STRING,
BGJOBCNT TYPE STRING,
TEMPLATE_ID TYPE STRING,
STATUS TYPE STRING,
MSMP_PROCESS_ID TYPE STRING,
REQ_INIT_SYS TYPE STRING,
LAST_UPDATED_BY TYPE STRING,
SLA_ID TYPE STRING,
REQUEST_FOR TYPE STRING,
UPDATED_AT TYPE STRING,
WF_REQ_STATUS TYPE STRING,
WF_APPR_STATUS TYPE STRING,
WF_COMPLETED_ON TYPE STRING,
WF_INSTANCE_ID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_GRAC_S_BI_REQ_A_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_GRAC_S_BI_REQ_A_STR-REQ_ID sy-vline 
WA_GRAC_S_BI_REQ_A_STR-REQNO sy-vline 
WA_GRAC_S_BI_REQ_A_STR-REQ_CREATED sy-vline 
WA_GRAC_S_BI_REQ_A_STR-DUEDATE sy-vline 
WA_GRAC_S_BI_REQ_A_STR-REQTYPE sy-vline 
WA_GRAC_S_BI_REQ_A_STR-PRIORITY sy-vline 
WA_GRAC_S_BI_REQ_A_STR-BPROC sy-vline 
WA_GRAC_S_BI_REQ_A_STR-FUNCAREA sy-vline 
WA_GRAC_S_BI_REQ_A_STR-REQ_COMPLETED sy-vline 
WA_GRAC_S_BI_REQ_A_STR-BGJOBID sy-vline 
WA_GRAC_S_BI_REQ_A_STR-BGJOBCNT sy-vline 
WA_GRAC_S_BI_REQ_A_STR-TEMPLATE_ID sy-vline 
WA_GRAC_S_BI_REQ_A_STR-STATUS sy-vline 
WA_GRAC_S_BI_REQ_A_STR-MSMP_PROCESS_ID sy-vline 
WA_GRAC_S_BI_REQ_A_STR-REQ_INIT_SYS sy-vline 
WA_GRAC_S_BI_REQ_A_STR-LAST_UPDATED_BY sy-vline 
WA_GRAC_S_BI_REQ_A_STR-SLA_ID sy-vline 
WA_GRAC_S_BI_REQ_A_STR-REQUEST_FOR sy-vline 
WA_GRAC_S_BI_REQ_A_STR-UPDATED_AT sy-vline 
WA_GRAC_S_BI_REQ_A_STR-WF_REQ_STATUS sy-vline 
WA_GRAC_S_BI_REQ_A_STR-WF_APPR_STATUS sy-vline 
WA_GRAC_S_BI_REQ_A_STR-WF_COMPLETED_ON sy-vline 
WA_GRAC_S_BI_REQ_A_STR-WF_INSTANCE_ID sy-vline      INTO ld_text SEPARATED BY SPACE.

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