ABAP Select data from SAP table AENGPROJECT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM AENGPROJECT
*  INTO TABLE @DATA(IT_AENGPROJECT2).
*--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_AENGPROJECT INDEX 1 INTO DATA(WA_AENGPROJECT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<AENGPROJECT>-MANDT = 1.
<AENGPROJECT>-ENGAGEMENTPROJECT = 1.
<AENGPROJECT>-ENGAGEMENTPROJECTNAME = 1.
<AENGPROJECT>-ENGAGEMENTPROJECTTYPE = 1.
<AENGPROJECT>-ENGAGEMENTPROJECTSTAGE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_AENGPROJECT-ENGAGEMENTPROJECTSERVICEORG, sy-vline,
  WA_AENGPROJECT-ENGAGEMENTPROJECTCATEGORY, sy-vline,
  WA_AENGPROJECT-CURRENCY, sy-vline,
  WA_AENGPROJECT-PROJECTSTARTDATE, sy-vline,
  WA_AENGPROJECT-PROJECTENDDATE, sy-vline,
  WA_AENGPROJECT-PROJECTVISIBILITY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_AENGPROJECT 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_AENGPROJECT 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_AENGPROJECT INTO WA_AENGPROJECT.


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

*Conversion exit ALPHA, internal->external for field CUSTOMER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_AENGPROJECT-CUSTOMER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_AENGPROJECT-CUSTOMER.
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_AENGPROJECT_STR, 
MANDT TYPE STRING,
ENGAGEMENTPROJECT TYPE STRING,
ENGAGEMENTPROJECTNAME TYPE STRING,
ENGAGEMENTPROJECTTYPE TYPE STRING,
ENGAGEMENTPROJECTSTAGE TYPE STRING,
ENGAGEMENTPROJECTSERVICEORG TYPE STRING,
ENGAGEMENTPROJECTCATEGORY TYPE STRING,
CURRENCY TYPE STRING,
PROJECTSTARTDATE TYPE STRING,
PROJECTENDDATE TYPE STRING,
PROJECTVISIBILITY TYPE STRING,
PROJECTMANAGER TYPE STRING,
LASTCHANGEDATETIME TYPE STRING,
CREATIONDATETIME TYPE STRING,
COSTCENTER TYPE STRING,
PROFITCENTER TYPE STRING,
CUSTOMER TYPE STRING,
CONTROLLINGAREA TYPE STRING,
PROJECTPROFILECODE TYPE STRING,
COMPANYCODE TYPE STRING,
TIMEPOSTINGISRESTRICTED TYPE STRING,
PROJECTBILLINGISUSED TYPE STRING,END OF T_EKKO_STR.
DATA: WA_AENGPROJECT_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_AENGPROJECT_STR-MANDT sy-vline 
WA_AENGPROJECT_STR-ENGAGEMENTPROJECT sy-vline 
WA_AENGPROJECT_STR-ENGAGEMENTPROJECTNAME sy-vline 
WA_AENGPROJECT_STR-ENGAGEMENTPROJECTTYPE sy-vline 
WA_AENGPROJECT_STR-ENGAGEMENTPROJECTSTAGE sy-vline 
WA_AENGPROJECT_STR-ENGAGEMENTPROJECTSERVICEORG sy-vline 
WA_AENGPROJECT_STR-ENGAGEMENTPROJECTCATEGORY sy-vline 
WA_AENGPROJECT_STR-CURRENCY sy-vline 
WA_AENGPROJECT_STR-PROJECTSTARTDATE sy-vline 
WA_AENGPROJECT_STR-PROJECTENDDATE sy-vline 
WA_AENGPROJECT_STR-PROJECTVISIBILITY sy-vline 
WA_AENGPROJECT_STR-PROJECTMANAGER sy-vline 
WA_AENGPROJECT_STR-LASTCHANGEDATETIME sy-vline 
WA_AENGPROJECT_STR-CREATIONDATETIME sy-vline 
WA_AENGPROJECT_STR-COSTCENTER sy-vline 
WA_AENGPROJECT_STR-PROFITCENTER sy-vline 
WA_AENGPROJECT_STR-CUSTOMER sy-vline 
WA_AENGPROJECT_STR-CONTROLLINGAREA sy-vline 
WA_AENGPROJECT_STR-PROJECTPROFILECODE sy-vline 
WA_AENGPROJECT_STR-COMPANYCODE sy-vline 
WA_AENGPROJECT_STR-TIMEPOSTINGISRESTRICTED sy-vline 
WA_AENGPROJECT_STR-PROJECTBILLINGISUSED sy-vline      INTO ld_text SEPARATED BY SPACE.

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