ABAP Select data from SAP table EWAWA_EHSAPPRCHECK into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EWAWA_EHSAPPRCHECK
*  INTO TABLE @DATA(IT_EWAWA_EHSAPPRCHECK2).
*--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_EWAWA_EHSAPPRCHECK INDEX 1 INTO DATA(WA_EWAWA_EHSAPPRCHECK2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EWAWA_EHSAPPRCHECK>-APPNO = 1.
<EWAWA_EHSAPPRCHECK>-APC = 1.
<EWAWA_EHSAPPRCHECK>-APVALFROM = 1.
<EWAWA_EHSAPPRCHECK>-APVALTO = 1.
<EWAWA_EHSAPPRCHECK>-MATNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EWAWA_EHSAPPRCHECK-WAKEY, sy-vline,
  WA_EWAWA_EHSAPPRCHECK-WASTEKEY, sy-vline,
  WA_EWAWA_EHSAPPRCHECK-WACATALOG, sy-vline,
  WA_EWAWA_EHSAPPRCHECK-AMOUNT, sy-vline,
  WA_EWAWA_EHSAPPRCHECK-AMOUNTU, sy-vline,
  WA_EWAWA_EHSAPPRCHECK-GENERATOR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EWAWA_EHSAPPRCHECK 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_EWAWA_EHSAPPRCHECK 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_EWAWA_EHSAPPRCHECK INTO WA_EWAWA_EHSAPPRCHECK.


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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field TRANSPORTER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EWAWA_EHSAPPRCHECK-TRANSPORTER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EWAWA_EHSAPPRCHECK-TRANSPORTER.
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_EWAWA_EHSAPPRCHECK_STR, 
APPNO TYPE STRING,
APC TYPE STRING,
APVALFROM TYPE STRING,
APVALTO TYPE STRING,
MATNR TYPE STRING,
WAKEY TYPE STRING,
WASTEKEY TYPE STRING,
WACATALOG TYPE STRING,
AMOUNT TYPE STRING,
AMOUNTU TYPE STRING,
GENERATOR TYPE STRING,
DISPOSER TYPE STRING,
TRANSPORTER TYPE STRING,
RECN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EWAWA_EHSAPPRCHECK_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_EWAWA_EHSAPPRCHECK_STR-APPNO sy-vline 
WA_EWAWA_EHSAPPRCHECK_STR-APC sy-vline 
WA_EWAWA_EHSAPPRCHECK_STR-APVALFROM sy-vline 
WA_EWAWA_EHSAPPRCHECK_STR-APVALTO sy-vline 
WA_EWAWA_EHSAPPRCHECK_STR-MATNR sy-vline 
WA_EWAWA_EHSAPPRCHECK_STR-WAKEY sy-vline 
WA_EWAWA_EHSAPPRCHECK_STR-WASTEKEY sy-vline 
WA_EWAWA_EHSAPPRCHECK_STR-WACATALOG sy-vline 
WA_EWAWA_EHSAPPRCHECK_STR-AMOUNT sy-vline 
WA_EWAWA_EHSAPPRCHECK_STR-AMOUNTU sy-vline 
WA_EWAWA_EHSAPPRCHECK_STR-GENERATOR sy-vline 
WA_EWAWA_EHSAPPRCHECK_STR-DISPOSER sy-vline 
WA_EWAWA_EHSAPPRCHECK_STR-TRANSPORTER sy-vline 
WA_EWAWA_EHSAPPRCHECK_STR-RECN sy-vline      INTO ld_text SEPARATED BY SPACE.

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