ABAP Select data from SAP table RECONST_PROJ into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RECONST_PROJ
*  INTO TABLE @DATA(IT_RECONST_PROJ2).
*--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_RECONST_PROJ INDEX 1 INTO DATA(WA_RECONST_PROJ2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RECONST_PROJ>-PRCTR = 1.
<RECONST_PROJ>-PSPID = 1.
<RECONST_PROJ>-POST1 = 1.
<RECONST_PROJ>-ERNAM = 1.
<RECONST_PROJ>-KIMSK = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RECONST_PROJ-VERNR, sy-vline,
  WA_RECONST_PROJ-VERNA, sy-vline,
  WA_RECONST_PROJ-ASTNR, sy-vline,
  WA_RECONST_PROJ-ASTNA, sy-vline,
  WA_RECONST_PROJ-VBUKR, sy-vline,
  WA_RECONST_PROJ-VGSBR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RECONST_PROJ 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_RECONST_PROJ 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_RECONST_PROJ INTO WA_RECONST_PROJ.


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

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

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field OTYPE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RECONST_PROJ-OTYPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RECONST_PROJ-OTYPE.
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_RECONST_PROJ_STR, 
PRCTR TYPE STRING,
PSPID TYPE STRING,
POST1 TYPE STRING,
ERNAM TYPE STRING,
KIMSK TYPE STRING,
VERNR TYPE STRING,
VERNA TYPE STRING,
ASTNR TYPE STRING,
ASTNA TYPE STRING,
VBUKR TYPE STRING,
VGSBR TYPE STRING,
VKOKR TYPE STRING,
PWHIE TYPE STRING,
ZUORD TYPE STRING,
PLFAZ TYPE STRING,
PLSEZ TYPE STRING,
WERKS TYPE STRING,
KALID TYPE STRING,
VGPLF TYPE STRING,
EWPLF TYPE STRING,
ZTEHT TYPE STRING,
VPROF TYPE STRING,
PROFL TYPE STRING,
BPROF TYPE STRING,
TXTSP TYPE STRING,
AEDTE TYPE STRING,
AEDTP TYPE STRING,
AEDTI TYPE STRING,
BESTA TYPE STRING,
SCOPE TYPE STRING,
XSTAT TYPE STRING,
TXJCD TYPE STRING,
ZSCHM TYPE STRING,
SCPRF TYPE STRING,
IMPRF TYPE STRING,
FMPRF TYPE STRING,
PPROF TYPE STRING,
VNAME TYPE STRING,
RECID TYPE STRING,
ETYPE TYPE STRING,
OTYPE TYPE STRING,
JIBCL TYPE STRING,
JIBSA TYPE STRING,
STATXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RECONST_PROJ_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_RECONST_PROJ_STR-PRCTR sy-vline 
WA_RECONST_PROJ_STR-PSPID sy-vline 
WA_RECONST_PROJ_STR-POST1 sy-vline 
WA_RECONST_PROJ_STR-ERNAM sy-vline 
WA_RECONST_PROJ_STR-KIMSK sy-vline 
WA_RECONST_PROJ_STR-VERNR sy-vline 
WA_RECONST_PROJ_STR-VERNA sy-vline 
WA_RECONST_PROJ_STR-ASTNR sy-vline 
WA_RECONST_PROJ_STR-ASTNA sy-vline 
WA_RECONST_PROJ_STR-VBUKR sy-vline 
WA_RECONST_PROJ_STR-VGSBR sy-vline 
WA_RECONST_PROJ_STR-VKOKR sy-vline 
WA_RECONST_PROJ_STR-PWHIE sy-vline 
WA_RECONST_PROJ_STR-ZUORD sy-vline 
WA_RECONST_PROJ_STR-PLFAZ sy-vline 
WA_RECONST_PROJ_STR-PLSEZ sy-vline 
WA_RECONST_PROJ_STR-WERKS sy-vline 
WA_RECONST_PROJ_STR-KALID sy-vline 
WA_RECONST_PROJ_STR-VGPLF sy-vline 
WA_RECONST_PROJ_STR-EWPLF sy-vline 
WA_RECONST_PROJ_STR-ZTEHT sy-vline 
WA_RECONST_PROJ_STR-VPROF sy-vline 
WA_RECONST_PROJ_STR-PROFL sy-vline 
WA_RECONST_PROJ_STR-BPROF sy-vline 
WA_RECONST_PROJ_STR-TXTSP sy-vline 
WA_RECONST_PROJ_STR-AEDTE sy-vline 
WA_RECONST_PROJ_STR-AEDTP sy-vline 
WA_RECONST_PROJ_STR-AEDTI sy-vline 
WA_RECONST_PROJ_STR-BESTA sy-vline 
WA_RECONST_PROJ_STR-SCOPE sy-vline 
WA_RECONST_PROJ_STR-XSTAT sy-vline 
WA_RECONST_PROJ_STR-TXJCD sy-vline 
WA_RECONST_PROJ_STR-ZSCHM sy-vline 
WA_RECONST_PROJ_STR-SCPRF sy-vline 
WA_RECONST_PROJ_STR-IMPRF sy-vline 
WA_RECONST_PROJ_STR-FMPRF sy-vline 
WA_RECONST_PROJ_STR-PPROF sy-vline 
WA_RECONST_PROJ_STR-VNAME sy-vline 
WA_RECONST_PROJ_STR-RECID sy-vline 
WA_RECONST_PROJ_STR-ETYPE sy-vline 
WA_RECONST_PROJ_STR-OTYPE sy-vline 
WA_RECONST_PROJ_STR-JIBCL sy-vline 
WA_RECONST_PROJ_STR-JIBSA sy-vline 
WA_RECONST_PROJ_STR-STATXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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