ABAP Select data from SAP table BWE_EQUI into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BWE_EQUI
*  INTO TABLE @DATA(IT_BWE_EQUI2).
*--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_BWE_EQUI INDEX 1 INTO DATA(WA_BWE_EQUI2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BWE_EQUI>-EQUNR = 1.
<BWE_EQUI>-DATETO = 1.
<BWE_EQUI>-DATEFROM = 1.
<BWE_EQUI>-EQART = 1.
<BWE_EQUI>-INVNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BWE_EQUI-IWERK, sy-vline,
  WA_BWE_EQUI-INGRP, sy-vline,
  WA_BWE_EQUI-ABCKZ, sy-vline,
  WA_BWE_EQUI-KOKRS, sy-vline,
  WA_BWE_EQUI-KOSTL, sy-vline,
  WA_BWE_EQUI-TPLNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BWE_EQUI 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_BWE_EQUI 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_BWE_EQUI INTO WA_BWE_EQUI.


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

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

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

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

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

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

*Conversion exit ABPSP, internal->external for field PROID
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_BWE_EQUI-PROID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BWE_EQUI-PROID.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ABPSN, internal->external for field POSID
CALL FUNCTION 'CONVERSION_EXIT_ABPSN_OUTPUT'
  EXPORTING
    input =                      WA_BWE_EQUI-POSID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BWE_EQUI-POSID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field LINEAR_UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_BWE_EQUI-LINEAR_UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BWE_EQUI-LINEAR_UNIT.
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_BWE_EQUI_STR, 
EQUNR TYPE STRING,
DATETO TYPE STRING,
DATEFROM TYPE STRING,
EQART TYPE STRING,
INVNR TYPE STRING,
IWERK TYPE STRING,
INGRP TYPE STRING,
ABCKZ TYPE STRING,
KOKRS TYPE STRING,
KOSTL TYPE STRING,
TPLNR TYPE STRING,
SWERK TYPE STRING,
STORT TYPE STRING,
BEBER TYPE STRING,
MSGRP TYPE STRING,
ADRNR TYPE STRING,
BUKRS TYPE STRING,
ANLNR TYPE STRING,
MATNR TYPE STRING,
WERK TYPE STRING,
ANSWT TYPE STRING,
WAERS TYPE STRING,
ANSDT TYPE STRING,
ERDAT TYPE STRING,
AEDAT TYPE STRING,
INBDT TYPE STRING,
PROID TYPE STRING,
EQTYP TYPE STRING,
VAPLZ TYPE STRING,
VAWRK TYPE STRING,
AUFNR TYPE STRING,
POSID TYPE STRING,
ARBPL TYPE STRING,
LAM_START TYPE STRING,
LAM_END TYPE STRING,
LINEAR_LENGTH TYPE STRING,
LINEAR_UNIT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BWE_EQUI_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_BWE_EQUI_STR-EQUNR sy-vline 
WA_BWE_EQUI_STR-DATETO sy-vline 
WA_BWE_EQUI_STR-DATEFROM sy-vline 
WA_BWE_EQUI_STR-EQART sy-vline 
WA_BWE_EQUI_STR-INVNR sy-vline 
WA_BWE_EQUI_STR-IWERK sy-vline 
WA_BWE_EQUI_STR-INGRP sy-vline 
WA_BWE_EQUI_STR-ABCKZ sy-vline 
WA_BWE_EQUI_STR-KOKRS sy-vline 
WA_BWE_EQUI_STR-KOSTL sy-vline 
WA_BWE_EQUI_STR-TPLNR sy-vline 
WA_BWE_EQUI_STR-SWERK sy-vline 
WA_BWE_EQUI_STR-STORT sy-vline 
WA_BWE_EQUI_STR-BEBER sy-vline 
WA_BWE_EQUI_STR-MSGRP sy-vline 
WA_BWE_EQUI_STR-ADRNR sy-vline 
WA_BWE_EQUI_STR-BUKRS sy-vline 
WA_BWE_EQUI_STR-ANLNR sy-vline 
WA_BWE_EQUI_STR-MATNR sy-vline 
WA_BWE_EQUI_STR-WERK sy-vline 
WA_BWE_EQUI_STR-ANSWT sy-vline 
WA_BWE_EQUI_STR-WAERS sy-vline 
WA_BWE_EQUI_STR-ANSDT sy-vline 
WA_BWE_EQUI_STR-ERDAT sy-vline 
WA_BWE_EQUI_STR-AEDAT sy-vline 
WA_BWE_EQUI_STR-INBDT sy-vline 
WA_BWE_EQUI_STR-PROID sy-vline 
WA_BWE_EQUI_STR-EQTYP sy-vline 
WA_BWE_EQUI_STR-VAPLZ sy-vline 
WA_BWE_EQUI_STR-VAWRK sy-vline 
WA_BWE_EQUI_STR-AUFNR sy-vline 
WA_BWE_EQUI_STR-POSID sy-vline 
WA_BWE_EQUI_STR-ARBPL sy-vline 
WA_BWE_EQUI_STR-LAM_START sy-vline 
WA_BWE_EQUI_STR-LAM_END sy-vline 
WA_BWE_EQUI_STR-LINEAR_LENGTH sy-vline 
WA_BWE_EQUI_STR-LINEAR_UNIT sy-vline      INTO ld_text SEPARATED BY SPACE.

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