ABAP Select data from SAP table EG27D into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

Below is a number of ABAP code snippets to demonstrate how to select data from SAP EG27D 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 EG27D. 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 EG27D 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_EG27D TYPE STANDARD TABLE OF EG27D,
      WA_EG27D TYPE EG27D,
      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: <EG27D> TYPE EG27D.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_EG27D.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM EG27D
  INTO TABLE IT_EG27D.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EG27D
*  INTO TABLE @DATA(IT_EG27D2).
*--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_EG27D INDEX 1 INTO DATA(WA_EG27D2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_EG27D ASSIGNING <EG27D>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EG27D>-MANDT = 1.
<EG27D>-DEVGRP = 1.
<EG27D>-DEVGRPTYP = 1.
<EG27D>-DEVGRPCAT = 1.
<EG27D>-DEVGRPTYPTXT = 1.

ENDLOOP.

LOOP AT IT_EG27D INTO WA_EG27D.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EG27D-DEVGRPCATTXT, sy-vline,
  WA_EG27D-STICHTAG, sy-vline,
  WA_EG27D-GERAET, sy-vline,
  WA_EG27D-SPARTYP, sy-vline,
  WA_EG27D-SPARTYPTXT, sy-vline,
  WA_EG27D-GERTYP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EG27D 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_EG27D 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_EG27D INTO WA_EG27D.


*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 DEVGRP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EG27D-DEVGRP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EG27D-DEVGRP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GERNR, internal->external for field GERAET
CALL FUNCTION 'CONVERSION_EXIT_GERNR_OUTPUT'
  EXPORTING
    input =                      WA_EG27D-GERAET
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EG27D-GERAET.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field GERTYP
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_EG27D-GERTYP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EG27D-GERTYP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EQUNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EG27D-EQUNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EG27D-EQUNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TPLNR, internal->external for field DEVLOC
CALL FUNCTION 'CONVERSION_EXIT_TPLNR_OUTPUT'
  EXPORTING
    input =                      WA_EG27D-DEVLOC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EG27D-DEVLOC.
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_EG27D_STR, 
MANDT TYPE STRING,
DEVGRP TYPE STRING,
DEVGRPTYP TYPE STRING,
DEVGRPCAT TYPE STRING,
DEVGRPTYPTXT TYPE STRING,
DEVGRPCATTXT TYPE STRING,
STICHTAG TYPE STRING,
GERAET TYPE STRING,
SPARTYP TYPE STRING,
SPARTYPTXT TYPE STRING,
GERTYP TYPE STRING,
BAUKLAS TYPE STRING,
FUNKLAS TYPE STRING,
WANDART TYPE STRING,
BAUFORM TYPE STRING,
EQUNR TYPE STRING,
AB TYPE STRING,
BIS TYPE STRING,
DEVGRPAB TYPE STRING,
DEVGRPBIS TYPE STRING,
PRORATE TYPE STRING,
KOMBINAT TYPE STRING,
SPARTE TYPE STRING,
DEVLOC TYPE STRING,
KZ_EGERR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EG27D_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_EG27D_STR-MANDT sy-vline 
WA_EG27D_STR-DEVGRP sy-vline 
WA_EG27D_STR-DEVGRPTYP sy-vline 
WA_EG27D_STR-DEVGRPCAT sy-vline 
WA_EG27D_STR-DEVGRPTYPTXT sy-vline 
WA_EG27D_STR-DEVGRPCATTXT sy-vline 
WA_EG27D_STR-STICHTAG sy-vline 
WA_EG27D_STR-GERAET sy-vline 
WA_EG27D_STR-SPARTYP sy-vline 
WA_EG27D_STR-SPARTYPTXT sy-vline 
WA_EG27D_STR-GERTYP sy-vline 
WA_EG27D_STR-BAUKLAS sy-vline 
WA_EG27D_STR-FUNKLAS sy-vline 
WA_EG27D_STR-WANDART sy-vline 
WA_EG27D_STR-BAUFORM sy-vline 
WA_EG27D_STR-EQUNR sy-vline 
WA_EG27D_STR-AB sy-vline 
WA_EG27D_STR-BIS sy-vline 
WA_EG27D_STR-DEVGRPAB sy-vline 
WA_EG27D_STR-DEVGRPBIS sy-vline 
WA_EG27D_STR-PRORATE sy-vline 
WA_EG27D_STR-KOMBINAT sy-vline 
WA_EG27D_STR-SPARTE sy-vline 
WA_EG27D_STR-DEVLOC sy-vline 
WA_EG27D_STR-KZ_EGERR sy-vline      INTO ld_text SEPARATED BY SPACE.

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