ABAP Select data from SAP table ISEVREQQSTAPI01 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP ISEVREQQSTAPI01 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 ISEVREQQSTAPI01. 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 ISEVREQQSTAPI01 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_ISEVREQQSTAPI01 TYPE STANDARD TABLE OF ISEVREQQSTAPI01,
      WA_ISEVREQQSTAPI01 TYPE ISEVREQQSTAPI01,
      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: <ISEVREQQSTAPI01> TYPE ISEVREQQSTAPI01.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_ISEVREQQSTAPI01.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM ISEVREQQSTAPI01
  INTO TABLE IT_ISEVREQQSTAPI01.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ISEVREQQSTAPI01
*  INTO TABLE @DATA(IT_ISEVREQQSTAPI012).
*--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_ISEVREQQSTAPI01 INDEX 1 INTO DATA(WA_ISEVREQQSTAPI012).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_ISEVREQQSTAPI01 ASSIGNING <ISEVREQQSTAPI01>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ISEVREQQSTAPI01>-MANDT = 1.
<ISEVREQQSTAPI01>-SUPLREVALREQQUESTIONUUID = 1.
<ISEVREQQSTAPI01>-SUPLREVALREQUUID = 1.
<ISEVREQQSTAPI01>-SUPLREVALREQSECTIONUUID = 1.
<ISEVREQQSTAPI01>-SUPLREVALREQBRNCHGQUESTION = 1.

ENDLOOP.

LOOP AT IT_ISEVREQQSTAPI01 INTO WA_ISEVREQQSTAPI01.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ISEVREQQSTAPI01-SUPLREVALQUESTIONUUID, sy-vline,
  WA_ISEVREQQSTAPI01-SUPPLIEREVALQUESTION, sy-vline,
  WA_ISEVREQQSTAPI01-SUPPLIEREVALREQUESTQUESTION, sy-vline,
  WA_ISEVREQQSTAPI01-QUESTIONNAME, sy-vline,
  WA_ISEVREQQSTAPI01-SLCQUESTIONTYPE, sy-vline,
  WA_ISEVREQQSTAPI01-MINIMALSCORE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ISEVREQQSTAPI01 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_ISEVREQQSTAPI01 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_ISEVREQQSTAPI01 INTO WA_ISEVREQQSTAPI01.


*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 SUPLREVALREQBRNCHGQUESTION
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISEVREQQSTAPI01-SUPLREVALREQBRNCHGQUESTION
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISEVREQQSTAPI01-SUPLREVALREQBRNCHGQUESTION.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SUPPLIEREVALQUESTION
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISEVREQQSTAPI01-SUPPLIEREVALQUESTION
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISEVREQQSTAPI01-SUPPLIEREVALQUESTION.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SUPPLIEREVALREQUESTQUESTION
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISEVREQQSTAPI01-SUPPLIEREVALREQUESTQUESTION
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISEVREQQSTAPI01-SUPPLIEREVALREQUESTQUESTION.
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_ISEVREQQSTAPI01_STR, 
MANDT TYPE STRING,
SUPLREVALREQQUESTIONUUID TYPE STRING,
SUPLREVALREQUUID TYPE STRING,
SUPLREVALREQSECTIONUUID TYPE STRING,
SUPLREVALREQBRNCHGQUESTION TYPE STRING,
SUPLREVALQUESTIONUUID TYPE STRING,
SUPPLIEREVALQUESTION TYPE STRING,
SUPPLIEREVALREQUESTQUESTION TYPE STRING,
QUESTIONNAME TYPE STRING,
SLCQUESTIONTYPE TYPE STRING,
MINIMALSCORE TYPE STRING,
TARGETSCORE TYPE STRING,
SLCQUESTIONATTACHMENTOPTION TYPE STRING,
ISDISQUALIFYINGQUESTION TYPE STRING,
SLCPREFERREDANSWER TYPE STRING,
NUMBEROFRESPONSES TYPE STRING,
ISQUESTIONCOMMENTENABLED TYPE STRING,
SUPLREVALORDINALNUMBER TYPE STRING,
ISMANDATORYQUESTION TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ISEVREQQSTAPI01_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_ISEVREQQSTAPI01_STR-MANDT sy-vline 
WA_ISEVREQQSTAPI01_STR-SUPLREVALREQQUESTIONUUID sy-vline 
WA_ISEVREQQSTAPI01_STR-SUPLREVALREQUUID sy-vline 
WA_ISEVREQQSTAPI01_STR-SUPLREVALREQSECTIONUUID sy-vline 
WA_ISEVREQQSTAPI01_STR-SUPLREVALREQBRNCHGQUESTION sy-vline 
WA_ISEVREQQSTAPI01_STR-SUPLREVALQUESTIONUUID sy-vline 
WA_ISEVREQQSTAPI01_STR-SUPPLIEREVALQUESTION sy-vline 
WA_ISEVREQQSTAPI01_STR-SUPPLIEREVALREQUESTQUESTION sy-vline 
WA_ISEVREQQSTAPI01_STR-QUESTIONNAME sy-vline 
WA_ISEVREQQSTAPI01_STR-SLCQUESTIONTYPE sy-vline 
WA_ISEVREQQSTAPI01_STR-MINIMALSCORE sy-vline 
WA_ISEVREQQSTAPI01_STR-TARGETSCORE sy-vline 
WA_ISEVREQQSTAPI01_STR-SLCQUESTIONATTACHMENTOPTION sy-vline 
WA_ISEVREQQSTAPI01_STR-ISDISQUALIFYINGQUESTION sy-vline 
WA_ISEVREQQSTAPI01_STR-SLCPREFERREDANSWER sy-vline 
WA_ISEVREQQSTAPI01_STR-NUMBEROFRESPONSES sy-vline 
WA_ISEVREQQSTAPI01_STR-ISQUESTIONCOMMENTENABLED sy-vline 
WA_ISEVREQQSTAPI01_STR-SUPLREVALORDINALNUMBER sy-vline 
WA_ISEVREQQSTAPI01_STR-ISMANDATORYQUESTION sy-vline      INTO ld_text SEPARATED BY SPACE.

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