ABAP Select data from SAP table PESVR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PESVR
*  INTO TABLE @DATA(IT_PESVR2).
*--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_PESVR INDEX 1 INTO DATA(WA_PESVR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PESVR>-MATNR = 1.
<PESVR>-VRKME = 1.
<PESVR>-EAN11 = 1.
<PESVR>-VKORG = 1.
<PESVR>-VTWEG = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PESVR-WERKS, sy-vline,
  WA_PESVR-BBETR, sy-vline,
  WA_PESVR-BWAER, sy-vline,
  WA_PESVR-BPEIN, sy-vline,
  WA_PESVR-BMEIN, sy-vline,
  WA_PESVR-NBETR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PESVR 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_PESVR 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_PESVR INTO WA_PESVR.


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

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

*Conversion exit EAN11, internal->external for field EAN11
CALL FUNCTION 'CONVERSION_EXIT_EAN11_OUTPUT'
  EXPORTING
    input =                      WA_PESVR-EAN11
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PESVR-EAN11.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field PVGRD
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PESVR-PVGRD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PESVR-PVGRD.
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_PESVR_STR, 
MATNR TYPE STRING,
VRKME TYPE STRING,
EAN11 TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
WERKS TYPE STRING,
BBETR TYPE STRING,
BWAER TYPE STRING,
BPEIN TYPE STRING,
BMEIN TYPE STRING,
NBETR TYPE STRING,
NWAER TYPE STRING,
NPEIN TYPE STRING,
NMEIN TYPE STRING,
AKTNR TYPE STRING,
AKTBW TYPE STRING,
BWTAR TYPE STRING,
BEWVK TYPE STRING,
BWERT TYPE STRING,
NWERT TYPE STRING,
KWAER TYPE STRING,
UMVKZ TYPE STRING,
UMVKN TYPE STRING,
VKKAB TYPE STRING,
VKKBI TYPE STRING,
PBIND TYPE STRING,
VORGA TYPE STRING,
KBELN TYPE STRING,
KBELP TYPE STRING,
FRBNR TYPE STRING,
PVGRD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PESVR_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_PESVR_STR-MATNR sy-vline 
WA_PESVR_STR-VRKME sy-vline 
WA_PESVR_STR-EAN11 sy-vline 
WA_PESVR_STR-VKORG sy-vline 
WA_PESVR_STR-VTWEG sy-vline 
WA_PESVR_STR-WERKS sy-vline 
WA_PESVR_STR-BBETR sy-vline 
WA_PESVR_STR-BWAER sy-vline 
WA_PESVR_STR-BPEIN sy-vline 
WA_PESVR_STR-BMEIN sy-vline 
WA_PESVR_STR-NBETR sy-vline 
WA_PESVR_STR-NWAER sy-vline 
WA_PESVR_STR-NPEIN sy-vline 
WA_PESVR_STR-NMEIN sy-vline 
WA_PESVR_STR-AKTNR sy-vline 
WA_PESVR_STR-AKTBW sy-vline 
WA_PESVR_STR-BWTAR sy-vline 
WA_PESVR_STR-BEWVK sy-vline 
WA_PESVR_STR-BWERT sy-vline 
WA_PESVR_STR-NWERT sy-vline 
WA_PESVR_STR-KWAER sy-vline 
WA_PESVR_STR-UMVKZ sy-vline 
WA_PESVR_STR-UMVKN sy-vline 
WA_PESVR_STR-VKKAB sy-vline 
WA_PESVR_STR-VKKBI sy-vline 
WA_PESVR_STR-PBIND sy-vline 
WA_PESVR_STR-VORGA sy-vline 
WA_PESVR_STR-KBELN sy-vline 
WA_PESVR_STR-KBELP sy-vline 
WA_PESVR_STR-FRBNR sy-vline 
WA_PESVR_STR-PVGRD sy-vline      INTO ld_text SEPARATED BY SPACE.

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