ABAP Select data from SAP table PLFH_B into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PLFH_B
*  INTO TABLE @DATA(IT_PLFH_B2).
*--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_PLFH_B INDEX 1 INTO DATA(WA_PLFH_B2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PLFH_B>-FLG_SEL = 1.
<PLFH_B>-MANDT = 1.
<PLFH_B>-PLNTY = 1.
<PLFH_B>-PLNNR = 1.
<PLFH_B>-PZLFH = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PLFH_B-ZAEHL, sy-vline,
  WA_PLFH_B-DATUV, sy-vline,
  WA_PLFH_B-TECHV, sy-vline,
  WA_PLFH_B-LOEKZ, sy-vline,
  WA_PLFH_B-PARKZ, sy-vline,
  WA_PLFH_B-AENNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PLFH_B 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_PLFH_B 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_PLFH_B INTO WA_PLFH_B.


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

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

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

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

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

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

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

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

*Conversion exit ISOLA, internal->external for field TXTSP
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_PLFH_B-TXTSP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PLFH_B-TXTSP.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ALPHA, internal->external for field AENNR_AUS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PLFH_B-AENNR_AUS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PLFH_B-AENNR_AUS.
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_PLFH_B_STR, 
FLG_SEL TYPE STRING,
MANDT TYPE STRING,
PLNTY TYPE STRING,
PLNNR TYPE STRING,
PZLFH TYPE STRING,
ZAEHL TYPE STRING,
DATUV TYPE STRING,
TECHV TYPE STRING,
LOEKZ TYPE STRING,
PARKZ TYPE STRING,
AENNR TYPE STRING,
DATUI TYPE STRING,
USERI TYPE STRING,
DATUC TYPE STRING,
USERC TYPE STRING,
OBJTY TYPE STRING,
OBJID TYPE STRING,
OBJCT TYPE STRING,
PLNAL TYPE STRING,
PLNFL TYPE STRING,
PLNKN TYPE STRING,
PSNFH TYPE STRING,
STEUF TYPE STRING,
KZKBL TYPE STRING,
BZOFFB TYPE STRING,
OFFSTB TYPE STRING,
EHOFFB TYPE STRING,
BZOFFE TYPE STRING,
OFFSTE TYPE STRING,
EHOFFE TYPE STRING,
MGEINH TYPE STRING,
MGVGW TYPE STRING,
MGFORM TYPE STRING,
EWEINH TYPE STRING,
EWVGW TYPE STRING,
EWFORM TYPE STRING,
TXTSP TYPE STRING,
KTSCH TYPE STRING,
TXTZ1 TYPE STRING,
KNOBJ TYPE STRING,
GP_KRIT1 TYPE STRING,
VALID_TO TYPE STRING,
LOEKZ_INHERITED TYPE STRING,
VERSN TYPE STRING,
VERSN_SOURCE TYPE STRING,
VERSN_SOURCE_PZLFH TYPE STRING,
VERSN_ORIGIN_ROUTING TYPE STRING,
CLAIMABLE TYPE STRING,
REGISTRABLE TYPE STRING,
VBKZ TYPE STRING,
DATUB TYPE STRING,
AENNR_AUS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PLFH_B_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_PLFH_B_STR-FLG_SEL sy-vline 
WA_PLFH_B_STR-MANDT sy-vline 
WA_PLFH_B_STR-PLNTY sy-vline 
WA_PLFH_B_STR-PLNNR sy-vline 
WA_PLFH_B_STR-PZLFH sy-vline 
WA_PLFH_B_STR-ZAEHL sy-vline 
WA_PLFH_B_STR-DATUV sy-vline 
WA_PLFH_B_STR-TECHV sy-vline 
WA_PLFH_B_STR-LOEKZ sy-vline 
WA_PLFH_B_STR-PARKZ sy-vline 
WA_PLFH_B_STR-AENNR sy-vline 
WA_PLFH_B_STR-DATUI sy-vline 
WA_PLFH_B_STR-USERI sy-vline 
WA_PLFH_B_STR-DATUC sy-vline 
WA_PLFH_B_STR-USERC sy-vline 
WA_PLFH_B_STR-OBJTY sy-vline 
WA_PLFH_B_STR-OBJID sy-vline 
WA_PLFH_B_STR-OBJCT sy-vline 
WA_PLFH_B_STR-PLNAL sy-vline 
WA_PLFH_B_STR-PLNFL sy-vline 
WA_PLFH_B_STR-PLNKN sy-vline 
WA_PLFH_B_STR-PSNFH sy-vline 
WA_PLFH_B_STR-STEUF sy-vline 
WA_PLFH_B_STR-KZKBL sy-vline 
WA_PLFH_B_STR-BZOFFB sy-vline 
WA_PLFH_B_STR-OFFSTB sy-vline 
WA_PLFH_B_STR-EHOFFB sy-vline 
WA_PLFH_B_STR-BZOFFE sy-vline 
WA_PLFH_B_STR-OFFSTE sy-vline 
WA_PLFH_B_STR-EHOFFE sy-vline 
WA_PLFH_B_STR-MGEINH sy-vline 
WA_PLFH_B_STR-MGVGW sy-vline 
WA_PLFH_B_STR-MGFORM sy-vline 
WA_PLFH_B_STR-EWEINH sy-vline 
WA_PLFH_B_STR-EWVGW sy-vline 
WA_PLFH_B_STR-EWFORM sy-vline 
WA_PLFH_B_STR-TXTSP sy-vline 
WA_PLFH_B_STR-KTSCH sy-vline 
WA_PLFH_B_STR-TXTZ1 sy-vline 
WA_PLFH_B_STR-KNOBJ sy-vline 
WA_PLFH_B_STR-GP_KRIT1 sy-vline 
WA_PLFH_B_STR-VALID_TO sy-vline 
WA_PLFH_B_STR-LOEKZ_INHERITED sy-vline 
WA_PLFH_B_STR-VERSN sy-vline 
WA_PLFH_B_STR-VERSN_SOURCE sy-vline 
WA_PLFH_B_STR-VERSN_SOURCE_PZLFH sy-vline 
WA_PLFH_B_STR-VERSN_ORIGIN_ROUTING sy-vline 
WA_PLFH_B_STR-CLAIMABLE sy-vline 
WA_PLFH_B_STR-REGISTRABLE sy-vline 
WA_PLFH_B_STR-VBKZ sy-vline 
WA_PLFH_B_STR-DATUB sy-vline 
WA_PLFH_B_STR-AENNR_AUS sy-vline      INTO ld_text SEPARATED BY SPACE.

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