ABAP Select data from SAP table PROJID into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PROJID
*  INTO TABLE @DATA(IT_PROJID2).
*--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_PROJID INDEX 1 INTO DATA(WA_PROJID2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PROJID>-MANDT = 1.
<PROJID>-PROJID = 1.
<PROJID>-PGUID = 1.
<PROJID>-PCOUNT = 1.
<PROJID>-PSPNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PROJID-AENNR, sy-vline,
  WA_PROJID-OTYPE, sy-vline,
  WA_PROJID-PVS_APPLOBJ_TYPE, sy-vline,
  WA_PROJID-PRSTYPE, sy-vline,
  WA_PROJID-QUNIT, sy-vline,
  WA_PROJID-QUANT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PROJID 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_PROJID 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_PROJID INTO WA_PROJID.


*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 KONPD, internal->external for field PSPNR
CALL FUNCTION 'CONVERSION_EXIT_KONPD_OUTPUT'
  EXPORTING
    input =                      WA_PROJID-PSPNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PROJID-PSPNR.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ALPHA, internal->external for field LOGSYS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PROJID-LOGSYS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PROJID-LOGSYS.
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_PROJID_STR, 
MANDT TYPE STRING,
PROJID TYPE STRING,
PGUID TYPE STRING,
PCOUNT TYPE STRING,
PSPNR TYPE STRING,
AENNR TYPE STRING,
OTYPE TYPE STRING,
PVS_APPLOBJ_TYPE TYPE STRING,
PRSTYPE TYPE STRING,
QUNIT TYPE STRING,
QUANT TYPE STRING,
CREADAT TYPE STRING,
CHNGDAT TYPE STRING,
TIMSTMP TYPE STRING,
CHNGBY TYPE STRING,
CREABY TYPE STRING,
LOGSYS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PROJID_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_PROJID_STR-MANDT sy-vline 
WA_PROJID_STR-PROJID sy-vline 
WA_PROJID_STR-PGUID sy-vline 
WA_PROJID_STR-PCOUNT sy-vline 
WA_PROJID_STR-PSPNR sy-vline 
WA_PROJID_STR-AENNR sy-vline 
WA_PROJID_STR-OTYPE sy-vline 
WA_PROJID_STR-PVS_APPLOBJ_TYPE sy-vline 
WA_PROJID_STR-PRSTYPE sy-vline 
WA_PROJID_STR-QUNIT sy-vline 
WA_PROJID_STR-QUANT sy-vline 
WA_PROJID_STR-CREADAT sy-vline 
WA_PROJID_STR-CHNGDAT sy-vline 
WA_PROJID_STR-TIMSTMP sy-vline 
WA_PROJID_STR-CHNGBY sy-vline 
WA_PROJID_STR-CREABY sy-vline 
WA_PROJID_STR-LOGSYS sy-vline      INTO ld_text SEPARATED BY SPACE.

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