ABAP Select data from SAP table GENCAS_RE_CHAR_15 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP GENCAS_RE_CHAR_15 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 GENCAS_RE_CHAR_15. 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 GENCAS_RE_CHAR_15 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_GENCAS_RE_CHAR_15 TYPE STANDARD TABLE OF GENCAS_RE_CHAR_15,
      WA_GENCAS_RE_CHAR_15 TYPE GENCAS_RE_CHAR_15,
      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: <GENCAS_RE_CHAR_15> TYPE GENCAS_RE_CHAR_15.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_GENCAS_RE_CHAR_15.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM GENCAS_RE_CHAR_15
  INTO TABLE IT_GENCAS_RE_CHAR_15.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM GENCAS_RE_CHAR_15
*  INTO TABLE @DATA(IT_GENCAS_RE_CHAR_152).
*--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_GENCAS_RE_CHAR_15 INDEX 1 INTO DATA(WA_GENCAS_RE_CHAR_152).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_GENCAS_RE_CHAR_15 ASSIGNING <GENCAS_RE_CHAR_15>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<GENCAS_RE_CHAR_15>-BDCHC = 1.
<GENCAS_RE_CHAR_15>-BDCHCT = 1.
<GENCAS_RE_CHAR_15>-BDCHP = 1.
<GENCAS_RE_CHAR_15>-BDCHPT = 1.
<GENCAS_RE_CHAR_15>-BDCHP_VC = 1.

ENDLOOP.

LOOP AT IT_GENCAS_RE_CHAR_15 INTO WA_GENCAS_RE_CHAR_15.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_GENCAS_RE_CHAR_15-BDCHS, sy-vline,
  WA_GENCAS_RE_CHAR_15-BDCHST, sy-vline,
  WA_GENCAS_RE_CHAR_15-BDCHG, sy-vline,
  WA_GENCAS_RE_CHAR_15-BDCHGT, sy-vline,
  WA_GENCAS_RE_CHAR_15-CIGRP01, sy-vline,
  WA_GENCAS_RE_CHAR_15-CIGRPT01, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_GENCAS_RE_CHAR_15 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_GENCAS_RE_CHAR_15 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_GENCAS_RE_CHAR_15 INTO WA_GENCAS_RE_CHAR_15.


*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 FMCIL, internal->external for field CMIT
CALL FUNCTION 'CONVERSION_EXIT_FMCIL_OUTPUT'
  EXPORTING
    input =                      WA_GENCAS_RE_CHAR_15-CMIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_GENCAS_RE_CHAR_15-CMIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field DOCNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_GENCAS_RE_CHAR_15-DOCNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_GENCAS_RE_CHAR_15-DOCNR.
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_GENCAS_RE_CHAR_15_STR, 
BDCHC TYPE STRING,
BDCHCT TYPE STRING,
BDCHP TYPE STRING,
BDCHPT TYPE STRING,
BDCHP_VC TYPE STRING,
BDCHS TYPE STRING,
BDCHST TYPE STRING,
BDCHG TYPE STRING,
BDCHGT TYPE STRING,
CIGRP01 TYPE STRING,
CIGRPT01 TYPE STRING,
CIGRP02 TYPE STRING,
CIGRPT02 TYPE STRING,
CIGRP03 TYPE STRING,
CIGRPT03 TYPE STRING,
CIGRP04 TYPE STRING,
CIGRPT04 TYPE STRING,
CIGRP05 TYPE STRING,
CIGRPT05 TYPE STRING,
CIGRP06 TYPE STRING,
CIGRPT06 TYPE STRING,
CMIT TYPE STRING,
CMITT TYPE STRING,
PRGRM TYPE STRING,
PRGRMT TYPE STRING,
FNAR TYPE STRING,
FNART TYPE STRING,
FNCLS TYPE STRING,
FNCLST TYPE STRING,
FDCT TYPE STRING,
FDCTT TYPE STRING,
FCGR01 TYPE STRING,
FCGRT01 TYPE STRING,
FCGR02 TYPE STRING,
FCGRT02 TYPE STRING,
FCGR03 TYPE STRING,
FCGRT03 TYPE STRING,
FCGR04 TYPE STRING,
FCGRT04 TYPE STRING,
FCGR05 TYPE STRING,
FCGRT05 TYPE STRING,
FUND TYPE STRING,
FUNDT TYPE STRING,
PRJCT TYPE STRING,
PRJCTT TYPE STRING,
PRJCT_STATUS TYPE STRING,
PRJCT_STATUST TYPE STRING,
FDPR TYPE STRING,
FDPRT TYPE STRING,
PRJCTG01 TYPE STRING,
PRJCTG02 TYPE STRING,
PRJCTG03 TYPE STRING,
PRJCTG04 TYPE STRING,
PRJCTG05 TYPE STRING,
PRJCTGT01 TYPE STRING,
PRJCTGT02 TYPE STRING,
PRJCTGT03 TYPE STRING,
PRJCTGT04 TYPE STRING,
PRJCTGT05 TYPE STRING,
PRGRMG01 TYPE STRING,
PRGRMG02 TYPE STRING,
PRGRMG03 TYPE STRING,
PRGRMG04 TYPE STRING,
PRGRMG05 TYPE STRING,
PRGRMGT01 TYPE STRING,
PRGRMGT02 TYPE STRING,
PRGRMGT03 TYPE STRING,
PRGRMGT04 TYPE STRING,
PRGRMGT05 TYPE STRING,
PROCESS TYPE STRING,
BUDTYPE TYPE STRING,
DOCNR TYPE STRING,
CHGDATE TYPE STRING,
DOCDATE TYPE STRING,
RESPPERS TYPE STRING,
VALTYPE TYPE STRING,
DOCTYPE TYPE STRING,
DOCSTATE TYPE STRING,
REVSTATE TYPE STRING,
DOCLN TYPE STRING,
TEXT50 TYPE STRING,
LINE_TEXT TYPE STRING,
XBLNR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_GENCAS_RE_CHAR_15_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_GENCAS_RE_CHAR_15_STR-BDCHC sy-vline 
WA_GENCAS_RE_CHAR_15_STR-BDCHCT sy-vline 
WA_GENCAS_RE_CHAR_15_STR-BDCHP sy-vline 
WA_GENCAS_RE_CHAR_15_STR-BDCHPT sy-vline 
WA_GENCAS_RE_CHAR_15_STR-BDCHP_VC sy-vline 
WA_GENCAS_RE_CHAR_15_STR-BDCHS sy-vline 
WA_GENCAS_RE_CHAR_15_STR-BDCHST sy-vline 
WA_GENCAS_RE_CHAR_15_STR-BDCHG sy-vline 
WA_GENCAS_RE_CHAR_15_STR-BDCHGT sy-vline 
WA_GENCAS_RE_CHAR_15_STR-CIGRP01 sy-vline 
WA_GENCAS_RE_CHAR_15_STR-CIGRPT01 sy-vline 
WA_GENCAS_RE_CHAR_15_STR-CIGRP02 sy-vline 
WA_GENCAS_RE_CHAR_15_STR-CIGRPT02 sy-vline 
WA_GENCAS_RE_CHAR_15_STR-CIGRP03 sy-vline 
WA_GENCAS_RE_CHAR_15_STR-CIGRPT03 sy-vline 
WA_GENCAS_RE_CHAR_15_STR-CIGRP04 sy-vline 
WA_GENCAS_RE_CHAR_15_STR-CIGRPT04 sy-vline 
WA_GENCAS_RE_CHAR_15_STR-CIGRP05 sy-vline 
WA_GENCAS_RE_CHAR_15_STR-CIGRPT05 sy-vline 
WA_GENCAS_RE_CHAR_15_STR-CIGRP06 sy-vline 
WA_GENCAS_RE_CHAR_15_STR-CIGRPT06 sy-vline 
WA_GENCAS_RE_CHAR_15_STR-CMIT sy-vline 
WA_GENCAS_RE_CHAR_15_STR-CMITT sy-vline 
WA_GENCAS_RE_CHAR_15_STR-PRGRM sy-vline 
WA_GENCAS_RE_CHAR_15_STR-PRGRMT sy-vline 
WA_GENCAS_RE_CHAR_15_STR-FNAR sy-vline 
WA_GENCAS_RE_CHAR_15_STR-FNART sy-vline 
WA_GENCAS_RE_CHAR_15_STR-FNCLS sy-vline 
WA_GENCAS_RE_CHAR_15_STR-FNCLST sy-vline 
WA_GENCAS_RE_CHAR_15_STR-FDCT sy-vline 
WA_GENCAS_RE_CHAR_15_STR-FDCTT sy-vline 
WA_GENCAS_RE_CHAR_15_STR-FCGR01 sy-vline 
WA_GENCAS_RE_CHAR_15_STR-FCGRT01 sy-vline 
WA_GENCAS_RE_CHAR_15_STR-FCGR02 sy-vline 
WA_GENCAS_RE_CHAR_15_STR-FCGRT02 sy-vline 
WA_GENCAS_RE_CHAR_15_STR-FCGR03 sy-vline 
WA_GENCAS_RE_CHAR_15_STR-FCGRT03 sy-vline 
WA_GENCAS_RE_CHAR_15_STR-FCGR04 sy-vline 
WA_GENCAS_RE_CHAR_15_STR-FCGRT04 sy-vline 
WA_GENCAS_RE_CHAR_15_STR-FCGR05 sy-vline 
WA_GENCAS_RE_CHAR_15_STR-FCGRT05 sy-vline 
WA_GENCAS_RE_CHAR_15_STR-FUND sy-vline 
WA_GENCAS_RE_CHAR_15_STR-FUNDT sy-vline 
WA_GENCAS_RE_CHAR_15_STR-PRJCT sy-vline 
WA_GENCAS_RE_CHAR_15_STR-PRJCTT sy-vline 
WA_GENCAS_RE_CHAR_15_STR-PRJCT_STATUS sy-vline 
WA_GENCAS_RE_CHAR_15_STR-PRJCT_STATUST sy-vline 
WA_GENCAS_RE_CHAR_15_STR-FDPR sy-vline 
WA_GENCAS_RE_CHAR_15_STR-FDPRT sy-vline 
WA_GENCAS_RE_CHAR_15_STR-PRJCTG01 sy-vline 
WA_GENCAS_RE_CHAR_15_STR-PRJCTG02 sy-vline 
WA_GENCAS_RE_CHAR_15_STR-PRJCTG03 sy-vline 
WA_GENCAS_RE_CHAR_15_STR-PRJCTG04 sy-vline 
WA_GENCAS_RE_CHAR_15_STR-PRJCTG05 sy-vline 
WA_GENCAS_RE_CHAR_15_STR-PRJCTGT01 sy-vline 
WA_GENCAS_RE_CHAR_15_STR-PRJCTGT02 sy-vline 
WA_GENCAS_RE_CHAR_15_STR-PRJCTGT03 sy-vline 
WA_GENCAS_RE_CHAR_15_STR-PRJCTGT04 sy-vline 
WA_GENCAS_RE_CHAR_15_STR-PRJCTGT05 sy-vline 
WA_GENCAS_RE_CHAR_15_STR-PRGRMG01 sy-vline 
WA_GENCAS_RE_CHAR_15_STR-PRGRMG02 sy-vline 
WA_GENCAS_RE_CHAR_15_STR-PRGRMG03 sy-vline 
WA_GENCAS_RE_CHAR_15_STR-PRGRMG04 sy-vline 
WA_GENCAS_RE_CHAR_15_STR-PRGRMG05 sy-vline 
WA_GENCAS_RE_CHAR_15_STR-PRGRMGT01 sy-vline 
WA_GENCAS_RE_CHAR_15_STR-PRGRMGT02 sy-vline 
WA_GENCAS_RE_CHAR_15_STR-PRGRMGT03 sy-vline 
WA_GENCAS_RE_CHAR_15_STR-PRGRMGT04 sy-vline 
WA_GENCAS_RE_CHAR_15_STR-PRGRMGT05 sy-vline 
WA_GENCAS_RE_CHAR_15_STR-PROCESS sy-vline 
WA_GENCAS_RE_CHAR_15_STR-BUDTYPE sy-vline 
WA_GENCAS_RE_CHAR_15_STR-DOCNR sy-vline 
WA_GENCAS_RE_CHAR_15_STR-CHGDATE sy-vline 
WA_GENCAS_RE_CHAR_15_STR-DOCDATE sy-vline 
WA_GENCAS_RE_CHAR_15_STR-RESPPERS sy-vline 
WA_GENCAS_RE_CHAR_15_STR-VALTYPE sy-vline 
WA_GENCAS_RE_CHAR_15_STR-DOCTYPE sy-vline 
WA_GENCAS_RE_CHAR_15_STR-DOCSTATE sy-vline 
WA_GENCAS_RE_CHAR_15_STR-REVSTATE sy-vline 
WA_GENCAS_RE_CHAR_15_STR-DOCLN sy-vline 
WA_GENCAS_RE_CHAR_15_STR-TEXT50 sy-vline 
WA_GENCAS_RE_CHAR_15_STR-LINE_TEXT sy-vline 
WA_GENCAS_RE_CHAR_15_STR-XBLNR sy-vline      INTO ld_text SEPARATED BY SPACE.

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