ABAP Select data from SAP table GAC_CHECK001 into internal table



Get Example source ABAP code based on a different SAP table
  

So we all know S/4Hana is the latest version and the future of SAP but what about the selecting data from hana tables like GAC_CHECK001 is it the same and what the table looks like in an S/4 system. If you havent seen or logged into an S/4Hana system you might be surprised at how similar it looks to the previous ERP/ECC version. Infact when using the gui it is difficult to tell the difference, and selecting data from database tables the same is true. Infact even for tables that have been replaced in hana, SAP have purposfully created versions of the old/original tables for backward compatability. This means your existing ABAP code will still work while you implement changes that take advantage of the new functionality and Hana in-memory tables.

You can see what table GAC_CHECK001 looks like in an S/4 system here and below is a number of ABAP code snippets to demonstrate how to select data from SAP GAC_CHECK001 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 GAC_CHECK001. See here for more generic Select statement tips.

DATA: IT_GAC_CHECK001 TYPE STANDARD TABLE OF GAC_CHECK001,
      WA_GAC_CHECK001 TYPE GAC_CHECK001,
      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: <GAC_CHECK001> TYPE GAC_CHECK001.

*Process all fields in table header/work area as string values, full declaration of the GAC_CHECK001 
*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.
  PERFORM process_as_string_field_values CHANGING wa_GAC_CHECK001.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM GAC_CHECK001
  INTO TABLE IT_GAC_CHECK001.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM GAC_CHECK001
*  INTO TABLE @DATA(IT_GAC_CHECK0012).
*--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_GAC_CHECK001 INDEX 1 INTO DATA(WA_GAC_CHECK0012).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_GAC_CHECK001 ASSIGNING <GAC_CHECK001>.
*To update a field value using a field symbol simply change the value via the field symbol pointer
<GAC_CHECK001>-TR_STATUS = 1.
<GAC_CHECK001>-BEF_IMG = 1.
<GAC_CHECK001>-TASK = 1.
<GAC_CHECK001>-SENDBITS = 1.
<GAC_CHECK001>-MANDT = 1.
ENDLOOP.

LOOP AT IT_GAC_CHECK001 INTO WA_GAC_CHECK001.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_GAC_CHECK001-SFAGACCHK, sy-vline,
WA_GAC_CHECK001-SFACLNTMON, sy-vline,
WA_GAC_CHECK001-SFAGROUPCHK, sy-vline,
WA_GAC_CHECK001-DESCRIPTION, sy-vline,
WA_GAC_CHECK001-CULTURE, sy-vline,
WA_GAC_CHECK001-FILEVERSION, sy-vline.
ENDLOOP. *Add any further fields from structure WA_GAC_CHECK001 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_GAC_CHECK001 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_GAC_CHECK001 INTO WA_GAC_CHECK001. *Write horizonal line to screen report. WRITE:/ sy-uline. *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. This form converts 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.
ENDFORM. *&---------------------------------------------------------------------* *& Form process_as_string_field_values *&---------------------------------------------------------------------* FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO. TYPES: BEGIN OF T_GAC_CHECK001_STR,
TR_STATUS TYPE STRING,
BEF_IMG TYPE STRING,
TASK TYPE STRING,
SENDBITS TYPE STRING,
MANDT TYPE STRING,
SFAGACCHK TYPE STRING,
SFACLNTMON TYPE STRING,
SFAGROUPCHK TYPE STRING,
DESCRIPTION TYPE STRING,
CULTURE TYPE STRING,
FILEVERSION TYPE STRING,
PUBLICKEYTOKEN TYPE STRING,
VERSION TYPE STRING,
NAME TYPE STRING,
MANDATORY TYPE STRING,
SAPCHECK TYPE STRING,
BLRESULT TYPE STRING,
MESSAGE TYPE STRING,END OF T_EKKO_STR. DATA: WA_GAC_CHECK001_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_GAC_CHECK001_STR-TR_STATUS sy-vline
WA_GAC_CHECK001_STR-BEF_IMG sy-vline
WA_GAC_CHECK001_STR-TASK sy-vline
WA_GAC_CHECK001_STR-SENDBITS sy-vline
WA_GAC_CHECK001_STR-MANDT sy-vline
WA_GAC_CHECK001_STR-SFAGACCHK sy-vline
WA_GAC_CHECK001_STR-SFACLNTMON sy-vline
WA_GAC_CHECK001_STR-SFAGROUPCHK sy-vline
WA_GAC_CHECK001_STR-DESCRIPTION sy-vline
WA_GAC_CHECK001_STR-CULTURE sy-vline
WA_GAC_CHECK001_STR-FILEVERSION sy-vline
WA_GAC_CHECK001_STR-PUBLICKEYTOKEN sy-vline
WA_GAC_CHECK001_STR-VERSION sy-vline
WA_GAC_CHECK001_STR-NAME sy-vline
WA_GAC_CHECK001_STR-MANDATORY sy-vline
WA_GAC_CHECK001_STR-SAPCHECK sy-vline
WA_GAC_CHECK001_STR-BLRESULT sy-vline
WA_GAC_CHECK001_STR-MESSAGE sy-vline INTO ld_text SEPARATED BY SPACE. *Add any further fields from structure WA_EKKO_STR you want to CONCATENATE... ENDLOOP. ENDFORM.