ABAP Select data from SAP table EHSWAS_APP_ALV into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP EHSWAS_APP_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 EHSWAS_APP_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 EHSWAS_APP_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_EHSWAS_APP_ALV TYPE STANDARD TABLE OF EHSWAS_APP_ALV,
      WA_EHSWAS_APP_ALV TYPE EHSWAS_APP_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: <EHSWAS_APP_ALV> TYPE EHSWAS_APP_ALV.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EHSWAS_APP_ALV
*  INTO TABLE @DATA(IT_EHSWAS_APP_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_EHSWAS_APP_ALV INDEX 1 INTO DATA(WA_EHSWAS_APP_ALV2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EHSWAS_APP_ALV>-RECN = 1.
<EHSWAS_APP_ALV>-INTAPPNO = 1.
<EHSWAS_APP_ALV>-APPSTATUS = 1.
<EHSWAS_APP_ALV>-APPNO = 1.
<EHSWAS_APP_ALV>-APC = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EHSWAS_APP_ALV-APVALFROM, sy-vline,
  WA_EHSWAS_APP_ALV-APVALTO, sy-vline,
  WA_EHSWAS_APP_ALV-APLWDG, sy-vline,
  WA_EHSWAS_APP_ALV-APCATDES, sy-vline,
  WA_EHSWAS_APP_ALV-BPGEN, sy-vline,
  WA_EHSWAS_APP_ALV-BPDIS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EHSWAS_APP_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_EHSWAS_APP_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_EHSWAS_APP_ALV INTO WA_EHSWAS_APP_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 INTAPPNO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EHSWAS_APP_ALV-INTAPPNO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHSWAS_APP_ALV-INTAPPNO.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

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

*Conversion exit CUNIT, internal->external for field APPQUANU
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_EHSWAS_APP_ALV-APPQUANU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHSWAS_APP_ALV-APPQUANU.
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_EHSWAS_APP_ALV_STR, 
RECN TYPE STRING,
INTAPPNO TYPE STRING,
APPSTATUS TYPE STRING,
APPNO TYPE STRING,
APC TYPE STRING,
APVALFROM TYPE STRING,
APVALTO TYPE STRING,
APLWDG TYPE STRING,
APCATDES TYPE STRING,
BPGEN TYPE STRING,
BPDIS TYPE STRING,
BPTRANS TYPE STRING,
DESC_BPGEN TYPE STRING,
DESC_BPDIS TYPE STRING,
DESC_BPTRA TYPE STRING,
RECNWAKEY TYPE STRING,
WAKEY TYPE STRING,
WAKEYDES TYPE STRING,
WAKEYCATLG TYPE STRING,
APDISQUAN TYPE STRING,
APDISU TYPE STRING,
APPQUAN TYPE STRING,
APPQUANU TYPE STRING,
APMNCAT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EHSWAS_APP_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_EHSWAS_APP_ALV_STR-RECN sy-vline 
WA_EHSWAS_APP_ALV_STR-INTAPPNO sy-vline 
WA_EHSWAS_APP_ALV_STR-APPSTATUS sy-vline 
WA_EHSWAS_APP_ALV_STR-APPNO sy-vline 
WA_EHSWAS_APP_ALV_STR-APC sy-vline 
WA_EHSWAS_APP_ALV_STR-APVALFROM sy-vline 
WA_EHSWAS_APP_ALV_STR-APVALTO sy-vline 
WA_EHSWAS_APP_ALV_STR-APLWDG sy-vline 
WA_EHSWAS_APP_ALV_STR-APCATDES sy-vline 
WA_EHSWAS_APP_ALV_STR-BPGEN sy-vline 
WA_EHSWAS_APP_ALV_STR-BPDIS sy-vline 
WA_EHSWAS_APP_ALV_STR-BPTRANS sy-vline 
WA_EHSWAS_APP_ALV_STR-DESC_BPGEN sy-vline 
WA_EHSWAS_APP_ALV_STR-DESC_BPDIS sy-vline 
WA_EHSWAS_APP_ALV_STR-DESC_BPTRA sy-vline 
WA_EHSWAS_APP_ALV_STR-RECNWAKEY sy-vline 
WA_EHSWAS_APP_ALV_STR-WAKEY sy-vline 
WA_EHSWAS_APP_ALV_STR-WAKEYDES sy-vline 
WA_EHSWAS_APP_ALV_STR-WAKEYCATLG sy-vline 
WA_EHSWAS_APP_ALV_STR-APDISQUAN sy-vline 
WA_EHSWAS_APP_ALV_STR-APDISU sy-vline 
WA_EHSWAS_APP_ALV_STR-APPQUAN sy-vline 
WA_EHSWAS_APP_ALV_STR-APPQUANU sy-vline 
WA_EHSWAS_APP_ALV_STR-APMNCAT sy-vline      INTO ld_text SEPARATED BY SPACE.

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