ABAP Select data from SAP table EHSWAS_APPROVALIOT_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_APPROVALIOT_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_APPROVALIOT_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_APPROVALIOT_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_APPROVALIOT_ALV TYPE STANDARD TABLE OF EHSWAS_APPROVALIOT_ALV,
      WA_EHSWAS_APPROVALIOT_ALV TYPE EHSWAS_APPROVALIOT_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_APPROVALIOT_ALV> TYPE EHSWAS_APPROVALIOT_ALV.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EHSWAS_APPROVALIOT_ALV
*  INTO TABLE @DATA(IT_EHSWAS_APPROVALIOT_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_APPROVALIOT_ALV INDEX 1 INTO DATA(WA_EHSWAS_APPROVALIOT_ALV2).


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

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

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EHSWAS_APPROVALIOT_ALV-APC, sy-vline,
  WA_EHSWAS_APPROVALIOT_ALV-APVALFROM, sy-vline,
  WA_EHSWAS_APPROVALIOT_ALV-APVALTO, sy-vline,
  WA_EHSWAS_APPROVALIOT_ALV-APLWDG, sy-vline,
  WA_EHSWAS_APPROVALIOT_ALV-APCATDES, sy-vline,
  WA_EHSWAS_APPROVALIOT_ALV-PARTNER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EHSWAS_APPROVALIOT_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_APPROVALIOT_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_APPROVALIOT_ALV INTO WA_EHSWAS_APPROVALIOT_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_APPROVALIOT_ALV-INTAPPNO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHSWAS_APPROVALIOT_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_APPROVALIOT_ALV-APPNO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHSWAS_APPROVALIOT_ALV-APPNO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PARTNER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EHSWAS_APPROVALIOT_ALV-PARTNER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHSWAS_APPROVALIOT_ALV-PARTNER.
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_APPROVALIOT_ALV_STR, 
MANDT TYPE STRING,
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,
PARTNER TYPE STRING,
DESCRIP TYPE STRING,
RLTYP TYPE STRING,
TEXT_PARTNER_FIELD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EHSWAS_APPROVALIOT_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_APPROVALIOT_ALV_STR-MANDT sy-vline 
WA_EHSWAS_APPROVALIOT_ALV_STR-RECN sy-vline 
WA_EHSWAS_APPROVALIOT_ALV_STR-INTAPPNO sy-vline 
WA_EHSWAS_APPROVALIOT_ALV_STR-APPSTATUS sy-vline 
WA_EHSWAS_APPROVALIOT_ALV_STR-APPNO sy-vline 
WA_EHSWAS_APPROVALIOT_ALV_STR-APC sy-vline 
WA_EHSWAS_APPROVALIOT_ALV_STR-APVALFROM sy-vline 
WA_EHSWAS_APPROVALIOT_ALV_STR-APVALTO sy-vline 
WA_EHSWAS_APPROVALIOT_ALV_STR-APLWDG sy-vline 
WA_EHSWAS_APPROVALIOT_ALV_STR-APCATDES sy-vline 
WA_EHSWAS_APPROVALIOT_ALV_STR-PARTNER sy-vline 
WA_EHSWAS_APPROVALIOT_ALV_STR-DESCRIP sy-vline 
WA_EHSWAS_APPROVALIOT_ALV_STR-RLTYP sy-vline 
WA_EHSWAS_APPROVALIOT_ALV_STR-TEXT_PARTNER_FIELD sy-vline      INTO ld_text SEPARATED BY SPACE.

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