ABAP Select data from SAP table GCONTAINERINFO into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM GCONTAINERINFO
*  INTO TABLE @DATA(IT_GCONTAINERINFO2).
*--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_GCONTAINERINFO INDEX 1 INTO DATA(WA_GCONTAINERINFO2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<GCONTAINERINFO>-TYPE = 1.
<GCONTAINERINFO>-NAME = 1.
<GCONTAINERINFO>-SUBNAME = 1.
<GCONTAINERINFO>-STATUS = 1.
<GCONTAINERINFO>-DEVCLASS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_GCONTAINERINFO-AUTHOR, sy-vline,
  WA_GCONTAINERINFO-COMPONENT, sy-vline,
  WA_GCONTAINERINFO-TEXT, sy-vline,
  WA_GCONTAINERINFO-CHANGEDATE, sy-vline,
  WA_GCONTAINERINFO-CHANGEUSER, sy-vline,
  WA_GCONTAINERINFO-SOURCESCAN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_GCONTAINERINFO 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_GCONTAINERINFO 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_GCONTAINERINFO INTO WA_GCONTAINERINFO.


*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 DTYPE, internal->external for field DATATYPE
CALL FUNCTION 'CONVERSION_EXIT_DTYPE_OUTPUT'
  EXPORTING
    input =                      WA_GCONTAINERINFO-DATATYPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_GCONTAINERINFO-DATATYPE.
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_GCONTAINERINFO_STR, 
TYPE TYPE STRING,
NAME TYPE STRING,
SUBNAME TYPE STRING,
STATUS TYPE STRING,
DEVCLASS TYPE STRING,
AUTHOR TYPE STRING,
COMPONENT TYPE STRING,
TEXT TYPE STRING,
CHANGEDATE TYPE STRING,
CHANGEUSER TYPE STRING,
SOURCESCAN TYPE STRING,
DBSCAN TYPE STRING,
ORGSYS TYPE STRING,
CONT_TYPE TYPE STRING,
CONT_DDIC TYPE STRING,
STRU_DDIC TYPE STRING,
CONT_NAME TYPE STRING,
STRU_NAME TYPE STRING,
INCLUDE TYPE STRING,
LINE TYPE STRING,
LENGTH TYPE STRING,
STRU_TYPE TYPE STRING,
SYSID TYPE STRING,
FUGR TYPE STRING,
DOMNAME TYPE STRING,
DATATYPE TYPE STRING,
INTLEN TYPE STRING,
ROWNUMTOT TYPE STRING,
ROWNUMCONS TYPE STRING,
INOFFSETCNT TYPE STRING,
OFFSETCNT TYPE STRING,
ROWCNTOFF1 TYPE STRING,
ROWCNTOFF2 TYPE STRING,
ROWCNTOFF3 TYPE STRING,
ROWCNTOFF4 TYPE STRING,
CTRLCODECNT TYPE STRING,
ALPHACNT TYPE STRING,
CONDATA TYPE STRING,
NON7BIT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_GCONTAINERINFO_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_GCONTAINERINFO_STR-TYPE sy-vline 
WA_GCONTAINERINFO_STR-NAME sy-vline 
WA_GCONTAINERINFO_STR-SUBNAME sy-vline 
WA_GCONTAINERINFO_STR-STATUS sy-vline 
WA_GCONTAINERINFO_STR-DEVCLASS sy-vline 
WA_GCONTAINERINFO_STR-AUTHOR sy-vline 
WA_GCONTAINERINFO_STR-COMPONENT sy-vline 
WA_GCONTAINERINFO_STR-TEXT sy-vline 
WA_GCONTAINERINFO_STR-CHANGEDATE sy-vline 
WA_GCONTAINERINFO_STR-CHANGEUSER sy-vline 
WA_GCONTAINERINFO_STR-SOURCESCAN sy-vline 
WA_GCONTAINERINFO_STR-DBSCAN sy-vline 
WA_GCONTAINERINFO_STR-ORGSYS sy-vline 
WA_GCONTAINERINFO_STR-CONT_TYPE sy-vline 
WA_GCONTAINERINFO_STR-CONT_DDIC sy-vline 
WA_GCONTAINERINFO_STR-STRU_DDIC sy-vline 
WA_GCONTAINERINFO_STR-CONT_NAME sy-vline 
WA_GCONTAINERINFO_STR-STRU_NAME sy-vline 
WA_GCONTAINERINFO_STR-INCLUDE sy-vline 
WA_GCONTAINERINFO_STR-LINE sy-vline 
WA_GCONTAINERINFO_STR-LENGTH sy-vline 
WA_GCONTAINERINFO_STR-STRU_TYPE sy-vline 
WA_GCONTAINERINFO_STR-SYSID sy-vline 
WA_GCONTAINERINFO_STR-FUGR sy-vline 
WA_GCONTAINERINFO_STR-DOMNAME sy-vline 
WA_GCONTAINERINFO_STR-DATATYPE sy-vline 
WA_GCONTAINERINFO_STR-INTLEN sy-vline 
WA_GCONTAINERINFO_STR-ROWNUMTOT sy-vline 
WA_GCONTAINERINFO_STR-ROWNUMCONS sy-vline 
WA_GCONTAINERINFO_STR-INOFFSETCNT sy-vline 
WA_GCONTAINERINFO_STR-OFFSETCNT sy-vline 
WA_GCONTAINERINFO_STR-ROWCNTOFF1 sy-vline 
WA_GCONTAINERINFO_STR-ROWCNTOFF2 sy-vline 
WA_GCONTAINERINFO_STR-ROWCNTOFF3 sy-vline 
WA_GCONTAINERINFO_STR-ROWCNTOFF4 sy-vline 
WA_GCONTAINERINFO_STR-CTRLCODECNT sy-vline 
WA_GCONTAINERINFO_STR-ALPHACNT sy-vline 
WA_GCONTAINERINFO_STR-CONDATA sy-vline 
WA_GCONTAINERINFO_STR-NON7BIT sy-vline      INTO ld_text SEPARATED BY SPACE.

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