ABAP Select data from SAP table ECP_PRIOR_ACT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ECP_PRIOR_ACT
*  INTO TABLE @DATA(IT_ECP_PRIOR_ACT2).
*--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_ECP_PRIOR_ACT INDEX 1 INTO DATA(WA_ECP_PRIOR_ACT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ECP_PRIOR_ACT>-PARENT = 1.
<ECP_PRIOR_ACT>-OBJKEY = 1.
<ECP_PRIOR_ACT>-OBJTYPE = 1.
<ECP_PRIOR_ACT>-LOGSYS = 1.
<ECP_PRIOR_ACT>-TEXT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ECP_PRIOR_ACT-POSI, sy-vline,
  WA_ECP_PRIOR_ACT-TIMESTAMP, sy-vline,
  WA_ECP_PRIOR_ACT-AUFNR, sy-vline,
  WA_ECP_PRIOR_ACT-AUFPL, sy-vline,
  WA_ECP_PRIOR_ACT-APLZL, sy-vline,
  WA_ECP_PRIOR_ACT-VORNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ECP_PRIOR_ACT 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_ECP_PRIOR_ACT 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_ECP_PRIOR_ACT INTO WA_ECP_PRIOR_ACT.


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

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

*Conversion exit NUMCV, internal->external for field VORNR
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_ECP_PRIOR_ACT-VORNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ECP_PRIOR_ACT-VORNR.
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_ECP_PRIOR_ACT_STR, 
PARENT TYPE STRING,
OBJKEY TYPE STRING,
OBJTYPE TYPE STRING,
LOGSYS TYPE STRING,
TEXT TYPE STRING,
POSI TYPE STRING,
TIMESTAMP TYPE STRING,
AUFNR TYPE STRING,
AUFPL TYPE STRING,
APLZL TYPE STRING,
VORNR TYPE STRING,
WERKS TYPE STRING,
LTXA1 TYPE STRING,
OBJNR TYPE STRING,
FSAVD TYPE STRING,
FSEDD TYPE STRING,
NAME1 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ECP_PRIOR_ACT_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_ECP_PRIOR_ACT_STR-PARENT sy-vline 
WA_ECP_PRIOR_ACT_STR-OBJKEY sy-vline 
WA_ECP_PRIOR_ACT_STR-OBJTYPE sy-vline 
WA_ECP_PRIOR_ACT_STR-LOGSYS sy-vline 
WA_ECP_PRIOR_ACT_STR-TEXT sy-vline 
WA_ECP_PRIOR_ACT_STR-POSI sy-vline 
WA_ECP_PRIOR_ACT_STR-TIMESTAMP sy-vline 
WA_ECP_PRIOR_ACT_STR-AUFNR sy-vline 
WA_ECP_PRIOR_ACT_STR-AUFPL sy-vline 
WA_ECP_PRIOR_ACT_STR-APLZL sy-vline 
WA_ECP_PRIOR_ACT_STR-VORNR sy-vline 
WA_ECP_PRIOR_ACT_STR-WERKS sy-vline 
WA_ECP_PRIOR_ACT_STR-LTXA1 sy-vline 
WA_ECP_PRIOR_ACT_STR-OBJNR sy-vline 
WA_ECP_PRIOR_ACT_STR-FSAVD sy-vline 
WA_ECP_PRIOR_ACT_STR-FSEDD sy-vline 
WA_ECP_PRIOR_ACT_STR-NAME1 sy-vline      INTO ld_text SEPARATED BY SPACE.

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