ABAP Select data from SAP table EWASERVDYN_WECHS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EWASERVDYN_WECHS
*  INTO TABLE @DATA(IT_EWASERVDYN_WECHS2).
*--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_EWASERVDYN_WECHS INDEX 1 INTO DATA(WA_EWASERVDYN_WECHS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EWASERVDYN_WECHS>-AUFNR = 1.
<EWASERVDYN_WECHS>-ORDERCODE = 1.
<EWASERVDYN_WECHS>-IHWERK = 1.
<EWASERVDYN_WECHS>-TDFORMAT = 1.
<EWASERVDYN_WECHS>-LONGTEXT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EWASERVDYN_WECHS-ROUTE, sy-vline,
  WA_EWASERVDYN_WECHS-VORGANGDAT, sy-vline,
  WA_EWASERVDYN_WECHS-SERV_TYPE, sy-vline,
  WA_EWASERVDYN_WECHS-EORDERNR, sy-vline,
  WA_EWASERVDYN_WECHS-SERVICE_CAT, sy-vline,
  WA_EWASERVDYN_WECHS-ORDER_LAUFNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EWASERVDYN_WECHS 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_EWASERVDYN_WECHS 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_EWASERVDYN_WECHS INTO WA_EWASERVDYN_WECHS.


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

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

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

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

*Conversion exit TPLNR, internal->external for field SERVLOC
CALL FUNCTION 'CONVERSION_EXIT_TPLNR_OUTPUT'
  EXPORTING
    input =                      WA_EWASERVDYN_WECHS-SERVLOC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EWASERVDYN_WECHS-SERVLOC.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit GERNR, internal->external for field SERNR
CALL FUNCTION 'CONVERSION_EXIT_GERNR_OUTPUT'
  EXPORTING
    input =                      WA_EWASERVDYN_WECHS-SERNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EWASERVDYN_WECHS-SERNR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit TPLNR, internal->external for field SERVLOC_ALT
CALL FUNCTION 'CONVERSION_EXIT_TPLNR_OUTPUT'
  EXPORTING
    input =                      WA_EWASERVDYN_WECHS-SERVLOC_ALT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EWASERVDYN_WECHS-SERVLOC_ALT.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit GERNR, internal->external for field SERNR_ALT
CALL FUNCTION 'CONVERSION_EXIT_GERNR_OUTPUT'
  EXPORTING
    input =                      WA_EWASERVDYN_WECHS-SERNR_ALT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EWASERVDYN_WECHS-SERNR_ALT.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit GERNR, internal->external for field SERNR_NEU
CALL FUNCTION 'CONVERSION_EXIT_GERNR_OUTPUT'
  EXPORTING
    input =                      WA_EWASERVDYN_WECHS-SERNR_NEU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EWASERVDYN_WECHS-SERNR_NEU.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field EQUNR_NEU
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EWASERVDYN_WECHS-EQUNR_NEU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EWASERVDYN_WECHS-EQUNR_NEU.
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_EWASERVDYN_WECHS_STR, 
AUFNR TYPE STRING,
ORDERCODE TYPE STRING,
IHWERK TYPE STRING,
TDFORMAT TYPE STRING,
LONGTEXT TYPE STRING,
ROUTE TYPE STRING,
VORGANGDAT TYPE STRING,
SERV_TYPE TYPE STRING,
EORDERNR TYPE STRING,
SERVICE_CAT TYPE STRING,
ORDER_LAUFNR TYPE STRING,
KUNNR TYPE STRING,
PARTTXT TYPE STRING,
SERVLOC TYPE STRING,
LOCTXT TYPE STRING,
BEH_TYPE TYPE STRING,
SERNR TYPE STRING,
EQUNR TYPE STRING,
EADAT TYPE STRING,
EADAT_AB TYPE STRING,
SERVLOC_ALT TYPE STRING,
ANZAHL TYPE STRING,
BEHTYPALT TYPE STRING,
SERNR_ALT TYPE STRING,
ANZAHL_NEU TYPE STRING,
BEHTYPNEU TYPE STRING,
SERNR_NEU TYPE STRING,
EQUNR_ALT TYPE STRING,
EQUNR_NEU TYPE STRING,
EINBDAT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EWASERVDYN_WECHS_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_EWASERVDYN_WECHS_STR-AUFNR sy-vline 
WA_EWASERVDYN_WECHS_STR-ORDERCODE sy-vline 
WA_EWASERVDYN_WECHS_STR-IHWERK sy-vline 
WA_EWASERVDYN_WECHS_STR-TDFORMAT sy-vline 
WA_EWASERVDYN_WECHS_STR-LONGTEXT sy-vline 
WA_EWASERVDYN_WECHS_STR-ROUTE sy-vline 
WA_EWASERVDYN_WECHS_STR-VORGANGDAT sy-vline 
WA_EWASERVDYN_WECHS_STR-SERV_TYPE sy-vline 
WA_EWASERVDYN_WECHS_STR-EORDERNR sy-vline 
WA_EWASERVDYN_WECHS_STR-SERVICE_CAT sy-vline 
WA_EWASERVDYN_WECHS_STR-ORDER_LAUFNR sy-vline 
WA_EWASERVDYN_WECHS_STR-KUNNR sy-vline 
WA_EWASERVDYN_WECHS_STR-PARTTXT sy-vline 
WA_EWASERVDYN_WECHS_STR-SERVLOC sy-vline 
WA_EWASERVDYN_WECHS_STR-LOCTXT sy-vline 
WA_EWASERVDYN_WECHS_STR-BEH_TYPE sy-vline 
WA_EWASERVDYN_WECHS_STR-SERNR sy-vline 
WA_EWASERVDYN_WECHS_STR-EQUNR sy-vline 
WA_EWASERVDYN_WECHS_STR-EADAT sy-vline 
WA_EWASERVDYN_WECHS_STR-EADAT_AB sy-vline 
WA_EWASERVDYN_WECHS_STR-SERVLOC_ALT sy-vline 
WA_EWASERVDYN_WECHS_STR-ANZAHL sy-vline 
WA_EWASERVDYN_WECHS_STR-BEHTYPALT sy-vline 
WA_EWASERVDYN_WECHS_STR-SERNR_ALT sy-vline 
WA_EWASERVDYN_WECHS_STR-ANZAHL_NEU sy-vline 
WA_EWASERVDYN_WECHS_STR-BEHTYPNEU sy-vline 
WA_EWASERVDYN_WECHS_STR-SERNR_NEU sy-vline 
WA_EWASERVDYN_WECHS_STR-EQUNR_ALT sy-vline 
WA_EWASERVDYN_WECHS_STR-EQUNR_NEU sy-vline 
WA_EWASERVDYN_WECHS_STR-EINBDAT sy-vline      INTO ld_text SEPARATED BY SPACE.

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