ABAP Select data from SAP table SEWS_REF_TYPES into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SEWS_REF_TYPES
*  INTO TABLE @DATA(IT_SEWS_REF_TYPES2).
*--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_SEWS_REF_TYPES INDEX 1 INTO DATA(WA_SEWS_REF_TYPES2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SEWS_REF_TYPES>-ACCP_6 = 1.
<SEWS_REF_TYPES>-CHAR_10 = 1.
<SEWS_REF_TYPES>-CLNT_3 = 1.
<SEWS_REF_TYPES>-DF16_DEC_15 = 1.
<SEWS_REF_TYPES>-DF16_RAW_16 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SEWS_REF_TYPES-DF34_DEC_15, sy-vline,
  WA_SEWS_REF_TYPES-DF34_RAW_34, sy-vline,
  WA_SEWS_REF_TYPES-DATS_8, sy-vline,
  WA_SEWS_REF_TYPES-DEC_10, sy-vline,
  WA_SEWS_REF_TYPES-FLTP_16, sy-vline,
  WA_SEWS_REF_TYPES-INT1_3, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SEWS_REF_TYPES 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_SEWS_REF_TYPES 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_SEWS_REF_TYPES INTO WA_SEWS_REF_TYPES.


*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 ISOLA, internal->external for field XSDLANGUAGE
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_SEWS_REF_TYPES-XSDLANGUAGE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_SEWS_REF_TYPES-XSDLANGUAGE.
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_SEWS_REF_TYPES_STR, 
ACCP_6 TYPE STRING,
CHAR_10 TYPE STRING,
CLNT_3 TYPE STRING,
DF16_DEC_15 TYPE STRING,
DF16_RAW_16 TYPE STRING,
DF34_DEC_15 TYPE STRING,
DF34_RAW_34 TYPE STRING,
DATS_8 TYPE STRING,
DEC_10 TYPE STRING,
FLTP_16 TYPE STRING,
INT1_3 TYPE STRING,
INT2_5 TYPE STRING,
INT4_10 TYPE STRING,
INT8_19 TYPE STRING,
LANG_1 TYPE STRING,
LCHR_257 TYPE STRING,
NUMC_10 TYPE STRING,
PREC_2 TYPE STRING,
RAW_10 TYPE STRING,
RAWSTRING_257 TYPE STRING,
SSTRING_10 TYPE STRING,
STRING TYPE STRING,
TIMS_6 TYPE STRING,
UNIT_3 TYPE STRING,
LRAW_257 TYPE STRING,
XSDANY TYPE STRING,
XSDBOOLEAN TYPE STRING,
XSDDATE_D TYPE STRING,
XSDDATE_ISO TYPE STRING,
XSDDATETIME_ISO TYPE STRING,
XSDDATETIME_LOCAL TYPE STRING,
XSDDATETIME_LOCAL_DT TYPE STRING,
XSDDATETIME_LONG_Z TYPE STRING,
XSDDATETIME_OFFSET TYPE STRING,
XSDDATETIME_Z TYPE STRING,
XSDDURATION_ISO TYPE STRING,
XSDLANGUAGE TYPE STRING,
XSDQNAME TYPE STRING,
XSDTIME_ISO TYPE STRING,
XSDTIME_T TYPE STRING,
XSDUUID_CHAR TYPE STRING,
XSDUUID_RAW TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SEWS_REF_TYPES_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_SEWS_REF_TYPES_STR-ACCP_6 sy-vline 
WA_SEWS_REF_TYPES_STR-CHAR_10 sy-vline 
WA_SEWS_REF_TYPES_STR-CLNT_3 sy-vline 
WA_SEWS_REF_TYPES_STR-DF16_DEC_15 sy-vline 
WA_SEWS_REF_TYPES_STR-DF16_RAW_16 sy-vline 
WA_SEWS_REF_TYPES_STR-DF34_DEC_15 sy-vline 
WA_SEWS_REF_TYPES_STR-DF34_RAW_34 sy-vline 
WA_SEWS_REF_TYPES_STR-DATS_8 sy-vline 
WA_SEWS_REF_TYPES_STR-DEC_10 sy-vline 
WA_SEWS_REF_TYPES_STR-FLTP_16 sy-vline 
WA_SEWS_REF_TYPES_STR-INT1_3 sy-vline 
WA_SEWS_REF_TYPES_STR-INT2_5 sy-vline 
WA_SEWS_REF_TYPES_STR-INT4_10 sy-vline 
WA_SEWS_REF_TYPES_STR-INT8_19 sy-vline 
WA_SEWS_REF_TYPES_STR-LANG_1 sy-vline 
WA_SEWS_REF_TYPES_STR-LCHR_257 sy-vline 
WA_SEWS_REF_TYPES_STR-NUMC_10 sy-vline 
WA_SEWS_REF_TYPES_STR-PREC_2 sy-vline 
WA_SEWS_REF_TYPES_STR-RAW_10 sy-vline 
WA_SEWS_REF_TYPES_STR-RAWSTRING_257 sy-vline 
WA_SEWS_REF_TYPES_STR-SSTRING_10 sy-vline 
WA_SEWS_REF_TYPES_STR-STRING sy-vline 
WA_SEWS_REF_TYPES_STR-TIMS_6 sy-vline 
WA_SEWS_REF_TYPES_STR-UNIT_3 sy-vline 
WA_SEWS_REF_TYPES_STR-LRAW_257 sy-vline 
WA_SEWS_REF_TYPES_STR-XSDANY sy-vline 
WA_SEWS_REF_TYPES_STR-XSDBOOLEAN sy-vline 
WA_SEWS_REF_TYPES_STR-XSDDATE_D sy-vline 
WA_SEWS_REF_TYPES_STR-XSDDATE_ISO sy-vline 
WA_SEWS_REF_TYPES_STR-XSDDATETIME_ISO sy-vline 
WA_SEWS_REF_TYPES_STR-XSDDATETIME_LOCAL sy-vline 
WA_SEWS_REF_TYPES_STR-XSDDATETIME_LOCAL_DT sy-vline 
WA_SEWS_REF_TYPES_STR-XSDDATETIME_LONG_Z sy-vline 
WA_SEWS_REF_TYPES_STR-XSDDATETIME_OFFSET sy-vline 
WA_SEWS_REF_TYPES_STR-XSDDATETIME_Z sy-vline 
WA_SEWS_REF_TYPES_STR-XSDDURATION_ISO sy-vline 
WA_SEWS_REF_TYPES_STR-XSDLANGUAGE sy-vline 
WA_SEWS_REF_TYPES_STR-XSDQNAME sy-vline 
WA_SEWS_REF_TYPES_STR-XSDTIME_ISO sy-vline 
WA_SEWS_REF_TYPES_STR-XSDTIME_T sy-vline 
WA_SEWS_REF_TYPES_STR-XSDUUID_CHAR sy-vline 
WA_SEWS_REF_TYPES_STR-XSDUUID_RAW sy-vline      INTO ld_text SEPARATED BY SPACE.

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