ABAP Select data from SAP table EHSWAS001_ALV into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP EHSWAS001_ALV 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 EHSWAS001_ALV. 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 EHSWAS001_ALV 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_EHSWAS001_ALV TYPE STANDARD TABLE OF EHSWAS001_ALV,
      WA_EHSWAS001_ALV TYPE EHSWAS001_ALV,
      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: <EHSWAS001_ALV> TYPE EHSWAS001_ALV.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_EHSWAS001_ALV.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM EHSWAS001_ALV
  INTO TABLE IT_EHSWAS001_ALV.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EHSWAS001_ALV
*  INTO TABLE @DATA(IT_EHSWAS001_ALV2).
*--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_EHSWAS001_ALV INDEX 1 INTO DATA(WA_EHSWAS001_ALV2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_EHSWAS001_ALV ASSIGNING <EHSWAS001_ALV>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EHSWAS001_ALV>-RECN = 1.
<EHSWAS001_ALV>-PARTNER = 1.
<EHSWAS001_ALV>-DESCRIP = 1.
<EHSWAS001_ALV>-RLTYP = 1.
<EHSWAS001_ALV>-TEXT_PARTNER_FIELD = 1.

ENDLOOP.

LOOP AT IT_EHSWAS001_ALV INTO WA_EHSWAS001_ALV.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EHSWAS001_ALV-ADRWERK, sy-vline,
  WA_EHSWAS001_ALV-WACON, sy-vline,
  WA_EHSWAS001_ALV-WAAUDIT, sy-vline,
  WA_EHSWAS001_ALV-WAAUDPERS, sy-vline,
  WA_EHSWAS001_ALV-WANAUDIT, sy-vline,
  WA_EHSWAS001_ALV-WADEPRO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EHSWAS001_ALV 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_EHSWAS001_ALV 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_EHSWAS001_ALV INTO WA_EHSWAS001_ALV.


*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 PARTNER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EHSWAS001_ALV-PARTNER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHSWAS001_ALV-PARTNER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field WABPCAT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EHSWAS001_ALV-WABPCAT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHSWAS001_ALV-WABPCAT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KOSTL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EHSWAS001_ALV-KOSTL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHSWAS001_ALV-KOSTL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AUFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EHSWAS001_ALV-AUFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHSWAS001_ALV-AUFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PRZNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EHSWAS001_ALV-PRZNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHSWAS001_ALV-PRZNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSP, internal->external for field PS_PSP_PNR
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_EHSWAS001_ALV-PS_PSP_PNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHSWAS001_ALV-PS_PSP_PNR.
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_EHSWAS001_ALV_STR, 
RECN TYPE STRING,
PARTNER TYPE STRING,
DESCRIP TYPE STRING,
RLTYP TYPE STRING,
TEXT_PARTNER_FIELD TYPE STRING,
ADRWERK TYPE STRING,
WACON TYPE STRING,
WAAUDIT TYPE STRING,
WAAUDPERS TYPE STRING,
WANAUDIT TYPE STRING,
WADEPRO TYPE STRING,
WABPCATDES TYPE STRING,
WABPCAT TYPE STRING,
ADRBUKRS TYPE STRING,
KOKRS TYPE STRING,
KOSTL TYPE STRING,
AUFNR TYPE STRING,
KSTRG TYPE STRING,
PRZNR TYPE STRING,
PS_PSP_PNR TYPE STRING,
COBUKRS TYPE STRING,
CODATUM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EHSWAS001_ALV_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_EHSWAS001_ALV_STR-RECN sy-vline 
WA_EHSWAS001_ALV_STR-PARTNER sy-vline 
WA_EHSWAS001_ALV_STR-DESCRIP sy-vline 
WA_EHSWAS001_ALV_STR-RLTYP sy-vline 
WA_EHSWAS001_ALV_STR-TEXT_PARTNER_FIELD sy-vline 
WA_EHSWAS001_ALV_STR-ADRWERK sy-vline 
WA_EHSWAS001_ALV_STR-WACON sy-vline 
WA_EHSWAS001_ALV_STR-WAAUDIT sy-vline 
WA_EHSWAS001_ALV_STR-WAAUDPERS sy-vline 
WA_EHSWAS001_ALV_STR-WANAUDIT sy-vline 
WA_EHSWAS001_ALV_STR-WADEPRO sy-vline 
WA_EHSWAS001_ALV_STR-WABPCATDES sy-vline 
WA_EHSWAS001_ALV_STR-WABPCAT sy-vline 
WA_EHSWAS001_ALV_STR-ADRBUKRS sy-vline 
WA_EHSWAS001_ALV_STR-KOKRS sy-vline 
WA_EHSWAS001_ALV_STR-KOSTL sy-vline 
WA_EHSWAS001_ALV_STR-AUFNR sy-vline 
WA_EHSWAS001_ALV_STR-KSTRG sy-vline 
WA_EHSWAS001_ALV_STR-PRZNR sy-vline 
WA_EHSWAS001_ALV_STR-PS_PSP_PNR sy-vline 
WA_EHSWAS001_ALV_STR-COBUKRS sy-vline 
WA_EHSWAS001_ALV_STR-CODATUM sy-vline      INTO ld_text SEPARATED BY SPACE.

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