ABAP Select data from SAP table BLGL_PURSLINE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BLGL_PURSLINE
*  INTO TABLE @DATA(IT_BLGL_PURSLINE2).
*--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_BLGL_PURSLINE INDEX 1 INTO DATA(WA_BLGL_PURSLINE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BLGL_PURSLINE>-WERKS = 1.
<BLGL_PURSLINE>-MATNR = 1.
<BLGL_PURSLINE>-MAKTX = 1.
<BLGL_PURSLINE>-BERID = 1.
<BLGL_PURSLINE>-DISPO = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BLGL_PURSLINE-EBELN, sy-vline,
  WA_BLGL_PURSLINE-EBELP, sy-vline,
  WA_BLGL_PURSLINE-BSART, sy-vline,
  WA_BLGL_PURSLINE-LIFNR, sy-vline,
  WA_BLGL_PURSLINE-IDNLF, sy-vline,
  WA_BLGL_PURSLINE-EKGRP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BLGL_PURSLINE 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_BLGL_PURSLINE 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_BLGL_PURSLINE INTO WA_BLGL_PURSLINE.


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

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

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

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

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

*Conversion exit ALPHA, internal->external for field LFNKD
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_BLGL_PURSLINE-LFNKD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BLGL_PURSLINE-LFNKD.
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_BLGL_PURSLINE_STR, 
WERKS TYPE STRING,
MATNR TYPE STRING,
MAKTX TYPE STRING,
BERID TYPE STRING,
DISPO TYPE STRING,
EBELN TYPE STRING,
EBELP TYPE STRING,
BSART TYPE STRING,
LIFNR TYPE STRING,
IDNLF TYPE STRING,
EKGRP TYPE STRING,
ETENR TYPE STRING,
EINDT TYPE STRING,
MENGE TYPE STRING,
WEMNG TYPE STRING,
BMEIN TYPE STRING,
MENGE_BSSME TYPE STRING,
WEMNG_BSSME TYPE STRING,
MEINS TYPE STRING,
UMREZ TYPE STRING,
UMREN TYPE STRING,
LABST TYPE STRING,
KANBA TYPE STRING,
AVMNG TYPE STRING,
AVMNG_BSSME TYPE STRING,
ABART TYPE STRING,
ABRUF TYPE STRING,
JCPOS TYPE STRING,
LFNKD TYPE STRING,
LWEDT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BLGL_PURSLINE_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_BLGL_PURSLINE_STR-WERKS sy-vline 
WA_BLGL_PURSLINE_STR-MATNR sy-vline 
WA_BLGL_PURSLINE_STR-MAKTX sy-vline 
WA_BLGL_PURSLINE_STR-BERID sy-vline 
WA_BLGL_PURSLINE_STR-DISPO sy-vline 
WA_BLGL_PURSLINE_STR-EBELN sy-vline 
WA_BLGL_PURSLINE_STR-EBELP sy-vline 
WA_BLGL_PURSLINE_STR-BSART sy-vline 
WA_BLGL_PURSLINE_STR-LIFNR sy-vline 
WA_BLGL_PURSLINE_STR-IDNLF sy-vline 
WA_BLGL_PURSLINE_STR-EKGRP sy-vline 
WA_BLGL_PURSLINE_STR-ETENR sy-vline 
WA_BLGL_PURSLINE_STR-EINDT sy-vline 
WA_BLGL_PURSLINE_STR-MENGE sy-vline 
WA_BLGL_PURSLINE_STR-WEMNG sy-vline 
WA_BLGL_PURSLINE_STR-BMEIN sy-vline 
WA_BLGL_PURSLINE_STR-MENGE_BSSME sy-vline 
WA_BLGL_PURSLINE_STR-WEMNG_BSSME sy-vline 
WA_BLGL_PURSLINE_STR-MEINS sy-vline 
WA_BLGL_PURSLINE_STR-UMREZ sy-vline 
WA_BLGL_PURSLINE_STR-UMREN sy-vline 
WA_BLGL_PURSLINE_STR-LABST sy-vline 
WA_BLGL_PURSLINE_STR-KANBA sy-vline 
WA_BLGL_PURSLINE_STR-AVMNG sy-vline 
WA_BLGL_PURSLINE_STR-AVMNG_BSSME sy-vline 
WA_BLGL_PURSLINE_STR-ABART sy-vline 
WA_BLGL_PURSLINE_STR-ABRUF sy-vline 
WA_BLGL_PURSLINE_STR-JCPOS sy-vline 
WA_BLGL_PURSLINE_STR-LFNKD sy-vline 
WA_BLGL_PURSLINE_STR-LWEDT sy-vline      INTO ld_text SEPARATED BY SPACE.

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