ABAP Select data from SAP table LTBP_PP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM LTBP_PP
*  INTO TABLE @DATA(IT_LTBP_PP2).
*--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_LTBP_PP INDEX 1 INTO DATA(WA_LTBP_PP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<LTBP_PP>-LGNUM = 1.
<LTBP_PP>-TBNUM = 1.
<LTBP_PP>-TBPOS = 1.
<LTBP_PP>-WERKS = 1.
<LTBP_PP>-LGORT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_LTBP_PP-MATNR, sy-vline,
  WA_LTBP_PP-CHARG, sy-vline,
  WA_LTBP_PP-SOBKZ, sy-vline,
  WA_LTBP_PP-BESTQ, sy-vline,
  WA_LTBP_PP-SONUM, sy-vline,
  WA_LTBP_PP-MENGE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_LTBP_PP 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_LTBP_PP 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_LTBP_PP INTO WA_LTBP_PP.


*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_LTBP_PP-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LTBP_PP-MATNR.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit CUNIT, internal->external for field ALTME
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_LTBP_PP-ALTME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LTBP_PP-ALTME.
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_LTBP_PP_STR, 
LGNUM TYPE STRING,
TBNUM TYPE STRING,
TBPOS TYPE STRING,
WERKS TYPE STRING,
LGORT TYPE STRING,
MATNR TYPE STRING,
CHARG TYPE STRING,
SOBKZ TYPE STRING,
BESTQ TYPE STRING,
SONUM TYPE STRING,
MENGE TYPE STRING,
MEINS TYPE STRING,
TAMEN TYPE STRING,
PDATU TYPE STRING,
PZEIT TYPE STRING,
NLTYP TYPE STRING,
NLPLA TYPE STRING,
ABLAD TYPE STRING,
RSNUM TYPE STRING,
RSPOS TYPE STRING,
RSART TYPE STRING,
WEMPF TYPE STRING,
ALTME TYPE STRING,
MENGA TYPE STRING,
TAMEA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_LTBP_PP_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_LTBP_PP_STR-LGNUM sy-vline 
WA_LTBP_PP_STR-TBNUM sy-vline 
WA_LTBP_PP_STR-TBPOS sy-vline 
WA_LTBP_PP_STR-WERKS sy-vline 
WA_LTBP_PP_STR-LGORT sy-vline 
WA_LTBP_PP_STR-MATNR sy-vline 
WA_LTBP_PP_STR-CHARG sy-vline 
WA_LTBP_PP_STR-SOBKZ sy-vline 
WA_LTBP_PP_STR-BESTQ sy-vline 
WA_LTBP_PP_STR-SONUM sy-vline 
WA_LTBP_PP_STR-MENGE sy-vline 
WA_LTBP_PP_STR-MEINS sy-vline 
WA_LTBP_PP_STR-TAMEN sy-vline 
WA_LTBP_PP_STR-PDATU sy-vline 
WA_LTBP_PP_STR-PZEIT sy-vline 
WA_LTBP_PP_STR-NLTYP sy-vline 
WA_LTBP_PP_STR-NLPLA sy-vline 
WA_LTBP_PP_STR-ABLAD sy-vline 
WA_LTBP_PP_STR-RSNUM sy-vline 
WA_LTBP_PP_STR-RSPOS sy-vline 
WA_LTBP_PP_STR-RSART sy-vline 
WA_LTBP_PP_STR-WEMPF sy-vline 
WA_LTBP_PP_STR-ALTME sy-vline 
WA_LTBP_PP_STR-MENGA sy-vline 
WA_LTBP_PP_STR-TAMEA sy-vline      INTO ld_text SEPARATED BY SPACE.

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