ABAP Select data from SAP table CESTPI_FIX into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CESTPI_FIX
*  INTO TABLE @DATA(IT_CESTPI_FIX2).
*--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_CESTPI_FIX INDEX 1 INTO DATA(WA_CESTPI_FIX2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CESTPI_FIX>-VRGAR = 1.
<CESTPI_FIX>-VERSI = 1.
<CESTPI_FIX>-PERIO = 1.
<CESTPI_FIX>-GJAHR = 1.
<CESTPI_FIX>-PERDE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CESTPI_FIX-PAOBJNR, sy-vline,
  WA_CESTPI_FIX-USNAM, sy-vline,
  WA_CESTPI_FIX-CPUDT, sy-vline,
  WA_CESTPI_FIX-CPUTM, sy-vline,
  WA_CESTPI_FIX-TIMESTMP, sy-vline,
  WA_CESTPI_FIX-BUDAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CESTPI_FIX 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_CESTPI_FIX 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_CESTPI_FIX INTO WA_CESTPI_FIX.


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

*Conversion exit PERI7, internal->external for field PERIO
CALL FUNCTION 'CONVERSION_EXIT_PERI7_OUTPUT'
  EXPORTING
    input =                      WA_CESTPI_FIX-PERIO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CESTPI_FIX-PERIO.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit PERI7, internal->external for field PERIO_BILLED
CALL FUNCTION 'CONVERSION_EXIT_PERI7_OUTPUT'
  EXPORTING
    input =                      WA_CESTPI_FIX-PERIO_BILLED
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CESTPI_FIX-PERIO_BILLED.
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_CESTPI_FIX_STR, 
VRGAR TYPE STRING,
VERSI TYPE STRING,
PERIO TYPE STRING,
GJAHR TYPE STRING,
PERDE TYPE STRING,
PAOBJNR TYPE STRING,
USNAM TYPE STRING,
CPUDT TYPE STRING,
CPUTM TYPE STRING,
TIMESTMP TYPE STRING,
BUDAT TYPE STRING,
WADAT TYPE STRING,
FADAT TYPE STRING,
BWZPT TYPE STRING,
BILLED TYPE STRING,
PERIO_BILLED TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CESTPI_FIX_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_CESTPI_FIX_STR-VRGAR sy-vline 
WA_CESTPI_FIX_STR-VERSI sy-vline 
WA_CESTPI_FIX_STR-PERIO sy-vline 
WA_CESTPI_FIX_STR-GJAHR sy-vline 
WA_CESTPI_FIX_STR-PERDE sy-vline 
WA_CESTPI_FIX_STR-PAOBJNR sy-vline 
WA_CESTPI_FIX_STR-USNAM sy-vline 
WA_CESTPI_FIX_STR-CPUDT sy-vline 
WA_CESTPI_FIX_STR-CPUTM sy-vline 
WA_CESTPI_FIX_STR-TIMESTMP sy-vline 
WA_CESTPI_FIX_STR-BUDAT sy-vline 
WA_CESTPI_FIX_STR-WADAT sy-vline 
WA_CESTPI_FIX_STR-FADAT sy-vline 
WA_CESTPI_FIX_STR-BWZPT sy-vline 
WA_CESTPI_FIX_STR-BILLED sy-vline 
WA_CESTPI_FIX_STR-PERIO_BILLED sy-vline      INTO ld_text SEPARATED BY SPACE.

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