ABAP Select data from SAP table PDEVE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PDEVE
*  INTO TABLE @DATA(IT_PDEVE2).
*--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_PDEVE INDEX 1 INTO DATA(WA_PDEVE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PDEVE>-LDATE = 1.
<PDEVE>-LTIME = 1.
<PDEVE>-ERDAT = 1.
<PDEVE>-ERTIM = 1.
<PDEVE>-SATZA = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PDEVE-TERID, sy-vline,
  WA_PDEVE-ABWGR, sy-vline,
  WA_PDEVE-EXLGA, sy-vline,
  WA_PDEVE-ZEINH, sy-vline,
  WA_PDEVE-HRAZL, sy-vline,
  WA_PDEVE-HRBET, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PDEVE 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_PDEVE 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_PDEVE INTO WA_PDEVE.


*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 DALLF, internal->external for field DALLF
CALL FUNCTION 'CONVERSION_EXIT_DALLF_OUTPUT'
  EXPORTING
    input =                      WA_PDEVE-DALLF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PDEVE-DALLF.
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_PDEVE_STR, 
LDATE TYPE STRING,
LTIME TYPE STRING,
ERDAT TYPE STRING,
ERTIM TYPE STRING,
SATZA TYPE STRING,
TERID TYPE STRING,
ABWGR TYPE STRING,
EXLGA TYPE STRING,
ZEINH TYPE STRING,
HRAZL TYPE STRING,
HRBET TYPE STRING,
ORIGF TYPE STRING,
DALLF TYPE STRING,
PDC_OTYPE TYPE STRING,
PDC_PLANS TYPE STRING,
OTYPE TYPE STRING,
PLANS TYPE STRING,
PDC_USRUP TYPE STRING,
USER2 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PDEVE_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_PDEVE_STR-LDATE sy-vline 
WA_PDEVE_STR-LTIME sy-vline 
WA_PDEVE_STR-ERDAT sy-vline 
WA_PDEVE_STR-ERTIM sy-vline 
WA_PDEVE_STR-SATZA sy-vline 
WA_PDEVE_STR-TERID sy-vline 
WA_PDEVE_STR-ABWGR sy-vline 
WA_PDEVE_STR-EXLGA sy-vline 
WA_PDEVE_STR-ZEINH sy-vline 
WA_PDEVE_STR-HRAZL sy-vline 
WA_PDEVE_STR-HRBET sy-vline 
WA_PDEVE_STR-ORIGF sy-vline 
WA_PDEVE_STR-DALLF sy-vline 
WA_PDEVE_STR-PDC_OTYPE sy-vline 
WA_PDEVE_STR-PDC_PLANS sy-vline 
WA_PDEVE_STR-OTYPE sy-vline 
WA_PDEVE_STR-PLANS sy-vline 
WA_PDEVE_STR-PDC_USRUP sy-vline 
WA_PDEVE_STR-USER2 sy-vline      INTO ld_text SEPARATED BY SPACE.

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