ABAP Select data from SAP table WSTR_DYNP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WSTR_DYNP
*  INTO TABLE @DATA(IT_WSTR_DYNP2).
*--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_WSTR_DYNP INDEX 1 INTO DATA(WA_WSTR_DYNP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WSTR_DYNP>-LOTNR = 1.
<WSTR_DYNP>-SSTNR = 1.
<WSTR_DYNP>-DISNR = 1.
<WSTR_DYNP>-PACNR = 1.
<WSTR_DYNP>-SATNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WSTR_DYNP-IDNRK, sy-vline,
  WA_WSTR_DYNP-MATKL, sy-vline,
  WA_WSTR_DYNP-MAKTH, sy-vline,
  WA_WSTR_DYNP-MAKTS, sy-vline,
  WA_WSTR_DYNP-MAKTC, sy-vline,
  WA_WSTR_DYNP-WGBEZ, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WSTR_DYNP 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_WSTR_DYNP 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_WSTR_DYNP INTO WA_WSTR_DYNP.


*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 MATN1, internal->external for field LOTNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_WSTR_DYNP-LOTNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WSTR_DYNP-LOTNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field SSTNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_WSTR_DYNP-SSTNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WSTR_DYNP-SSTNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field DISNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_WSTR_DYNP-DISNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WSTR_DYNP-DISNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field PACNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_WSTR_DYNP-PACNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WSTR_DYNP-PACNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field SATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_WSTR_DYNP-SATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WSTR_DYNP-SATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field IDNRK
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_WSTR_DYNP-IDNRK
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WSTR_DYNP-IDNRK.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_WSTR_DYNP-MEINH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WSTR_DYNP-MEINH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field CMPME
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_WSTR_DYNP-CMPME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WSTR_DYNP-CMPME.
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_WSTR_DYNP_STR, 
LOTNR TYPE STRING,
SSTNR TYPE STRING,
DISNR TYPE STRING,
PACNR TYPE STRING,
SATNR TYPE STRING,
IDNRK TYPE STRING,
MATKL TYPE STRING,
MAKTH TYPE STRING,
MAKTS TYPE STRING,
MAKTC TYPE STRING,
WGBEZ TYPE STRING,
MEINH TYPE STRING,
MEINT TYPE STRING,
CMPME TYPE STRING,
CPQTY TYPE STRING,
SUQTY TYPE STRING,
GSQTY TYPE STRING,
SELKZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WSTR_DYNP_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_WSTR_DYNP_STR-LOTNR sy-vline 
WA_WSTR_DYNP_STR-SSTNR sy-vline 
WA_WSTR_DYNP_STR-DISNR sy-vline 
WA_WSTR_DYNP_STR-PACNR sy-vline 
WA_WSTR_DYNP_STR-SATNR sy-vline 
WA_WSTR_DYNP_STR-IDNRK sy-vline 
WA_WSTR_DYNP_STR-MATKL sy-vline 
WA_WSTR_DYNP_STR-MAKTH sy-vline 
WA_WSTR_DYNP_STR-MAKTS sy-vline 
WA_WSTR_DYNP_STR-MAKTC sy-vline 
WA_WSTR_DYNP_STR-WGBEZ sy-vline 
WA_WSTR_DYNP_STR-MEINH sy-vline 
WA_WSTR_DYNP_STR-MEINT sy-vline 
WA_WSTR_DYNP_STR-CMPME sy-vline 
WA_WSTR_DYNP_STR-CPQTY sy-vline 
WA_WSTR_DYNP_STR-SUQTY sy-vline 
WA_WSTR_DYNP_STR-GSQTY sy-vline 
WA_WSTR_DYNP_STR-SELKZ sy-vline      INTO ld_text SEPARATED BY SPACE.

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