ABAP Select data from SAP table RGLIF into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RGLIF 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 RGLIF. 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 RGLIF 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_RGLIF TYPE STANDARD TABLE OF RGLIF,
      WA_RGLIF TYPE RGLIF,
      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: <RGLIF> TYPE RGLIF.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RGLIF
*  INTO TABLE @DATA(IT_RGLIF2).
*--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_RGLIF INDEX 1 INTO DATA(WA_RGLIF2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RGLIF>-INCLUDE = 1.
<RGLIF>-APPL = 1.
<RGLIF>-TITLE = 1.
<RGLIF>-R2 = 1.
<RGLIF>-EDIT_LOCK = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RGLIF-AUTH, sy-vline,
  WA_RGLIF-TEMPORARY, sy-vline,
  WA_RGLIF-TRKORR, sy-vline,
  WA_RGLIF-DEVCLASS, sy-vline,
  WA_RGLIF-PROGTYPE, sy-vline,
  WA_RGLIF-LOGDB, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RGLIF 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_RGLIF 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_RGLIF INTO WA_RGLIF.


*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 ISOLA, internal->external for field LANGUAGE
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_RGLIF-LANGUAGE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RGLIF-LANGUAGE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit DTYPE, internal->external for field DATATYPE
CALL FUNCTION 'CONVERSION_EXIT_DTYPE_OUTPUT'
  EXPORTING
    input =                      WA_RGLIF-DATATYPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RGLIF-DATATYPE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field MASTERLANG
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_RGLIF-MASTERLANG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RGLIF-MASTERLANG.
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_RGLIF_STR, 
INCLUDE TYPE STRING,
APPL TYPE STRING,
TITLE TYPE STRING,
R2 TYPE STRING,
EDIT_LOCK TYPE STRING,
AUTH TYPE STRING,
TEMPORARY TYPE STRING,
TRKORR TYPE STRING,
DEVCLASS TYPE STRING,
PROGTYPE TYPE STRING,
LOGDB TYPE STRING,
MESSAGE_ID TYPE STRING,
DOMNAME TYPE STRING,
ELEMNAME TYPE STRING,
TABNAME TYPE STRING,
LANGUAGE TYPE STRING,
DATATYPE TYPE STRING,
LENGTH TYPE STRING,
DECIMALS TYPE STRING,
LOWERCASE TYPE STRING,
SIGN TYPE STRING,
VALUETAB TYPE STRING,
APPLCLASS TYPE STRING,
MASTERLANG TYPE STRING,
TEXT TYPE STRING,
MEMORYID TYPE STRING,
CONVEXIT TYPE STRING,
OUTPUTLEN TYPE STRING,
REPLACE TYPE STRING,
DOCUTYPE TYPE STRING,
WITH_DOCU TYPE STRING,
WITH_INCL TYPE STRING,
ONLY_SOURC TYPE STRING,
ONLY_TEXTS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RGLIF_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_RGLIF_STR-INCLUDE sy-vline 
WA_RGLIF_STR-APPL sy-vline 
WA_RGLIF_STR-TITLE sy-vline 
WA_RGLIF_STR-R2 sy-vline 
WA_RGLIF_STR-EDIT_LOCK sy-vline 
WA_RGLIF_STR-AUTH sy-vline 
WA_RGLIF_STR-TEMPORARY sy-vline 
WA_RGLIF_STR-TRKORR sy-vline 
WA_RGLIF_STR-DEVCLASS sy-vline 
WA_RGLIF_STR-PROGTYPE sy-vline 
WA_RGLIF_STR-LOGDB sy-vline 
WA_RGLIF_STR-MESSAGE_ID sy-vline 
WA_RGLIF_STR-DOMNAME sy-vline 
WA_RGLIF_STR-ELEMNAME sy-vline 
WA_RGLIF_STR-TABNAME sy-vline 
WA_RGLIF_STR-LANGUAGE sy-vline 
WA_RGLIF_STR-DATATYPE sy-vline 
WA_RGLIF_STR-LENGTH sy-vline 
WA_RGLIF_STR-DECIMALS sy-vline 
WA_RGLIF_STR-LOWERCASE sy-vline 
WA_RGLIF_STR-SIGN sy-vline 
WA_RGLIF_STR-VALUETAB sy-vline 
WA_RGLIF_STR-APPLCLASS sy-vline 
WA_RGLIF_STR-MASTERLANG sy-vline 
WA_RGLIF_STR-TEXT sy-vline 
WA_RGLIF_STR-MEMORYID sy-vline 
WA_RGLIF_STR-CONVEXIT sy-vline 
WA_RGLIF_STR-OUTPUTLEN sy-vline 
WA_RGLIF_STR-REPLACE sy-vline 
WA_RGLIF_STR-DOCUTYPE sy-vline 
WA_RGLIF_STR-WITH_DOCU sy-vline 
WA_RGLIF_STR-WITH_INCL sy-vline 
WA_RGLIF_STR-ONLY_SOURC sy-vline 
WA_RGLIF_STR-ONLY_TEXTS sy-vline      INTO ld_text SEPARATED BY SPACE.

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