ABAP Select data from SAP table OA2C_CLIENT 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, is it 5he same and what do tables like OA2C_CLIENT look 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.

Below is a number of ABAP code snippets to demonstrate how to select data from SAP OA2C_CLIENT 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 OA2C_CLIENT. See here for more generic Select statement tips.

DATA: IT_OA2C_CLIENT TYPE STANDARD TABLE OF OA2C_CLIENT,
      WA_OA2C_CLIENT TYPE OA2C_CLIENT,
      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: <OA2C_CLIENT> TYPE OA2C_CLIENT.

*Process all fields in table header/work area as string values, full declaration of the OA2C_CLIENT 
*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_OA2C_CLIENT.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM OA2C_CLIENT
  INTO TABLE IT_OA2C_CLIENT.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM OA2C_CLIENT
*  INTO TABLE @DATA(IT_OA2C_CLIENT2).
*--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_OA2C_CLIENT INDEX 1 INTO DATA(WA_OA2C_CLIENT2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_OA2C_CLIENT ASSIGNING <OA2C_CLIENT>.
*To update a field value using a field symbol simply change the value via the field symbol pointer
<OA2C_CLIENT>-MANDT = 1.
<OA2C_CLIENT>-CLIENT_UUID = 1.
<OA2C_CLIENT>-PROFILE = 1.
<OA2C_CLIENT>-SPS_NAME = 1.
<OA2C_CLIENT>-CLIENT_ID = 1.
ENDLOOP.

LOOP AT IT_OA2C_CLIENT INTO WA_OA2C_CLIENT.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_OA2C_CLIENT-CREATED_BY, sy-vline,
WA_OA2C_CLIENT-CREATED_ON, sy-vline,
WA_OA2C_CLIENT-CREATED_AT, sy-vline,
WA_OA2C_CLIENT-CHANGED_BY, sy-vline,
WA_OA2C_CLIENT-CHANGED_ON, sy-vline,
WA_OA2C_CLIENT-CHANGED_AT, sy-vline.
ENDLOOP. *Add any further fields from structure WA_OA2C_CLIENT 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_OA2C_CLIENT 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_OA2C_CLIENT INTO WA_OA2C_CLIENT. *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_OA2C_CLIENT_STR,
MANDT TYPE STRING,
CLIENT_UUID TYPE STRING,
PROFILE TYPE STRING,
SPS_NAME TYPE STRING,
CLIENT_ID TYPE STRING,
CREATED_BY TYPE STRING,
CREATED_ON TYPE STRING,
CREATED_AT TYPE STRING,
CHANGED_BY TYPE STRING,
CHANGED_ON TYPE STRING,
CHANGED_AT TYPE STRING,
AUTHORIZATION_ENDPOINT TYPE STRING,
TOKEN_ENDPOINT TYPE STRING,
REVOCATION_ENDPOINT TYPE STRING,
AUTHENTICATION_METHOD TYPE STRING,
AUTH_CODE_ALLOWED TYPE STRING,
SAML20_ALLOWED TYPE STRING,
REFRESH_ALLOWED TYPE STRING,
RT_VALIDITY TYPE STRING,
REDIRECT_URI_HOST TYPE STRING,
REDIRECT_URI_PORT TYPE STRING,
CS_SEGMENT_COUNT TYPE STRING,
SAML20_NAMEFMT TYPE STRING,
SAML20_AUDIENCE TYPE STRING,
TARGET_PATH TYPE STRING,
RESOURCE_ACCESS TYPE STRING,
USER_EMAIL_NUM TYPE STRING,
CONFIGURATION TYPE STRING,END OF T_EKKO_STR. DATA: WA_OA2C_CLIENT_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_OA2C_CLIENT_STR-MANDT sy-vline
WA_OA2C_CLIENT_STR-CLIENT_UUID sy-vline
WA_OA2C_CLIENT_STR-PROFILE sy-vline
WA_OA2C_CLIENT_STR-SPS_NAME sy-vline
WA_OA2C_CLIENT_STR-CLIENT_ID sy-vline
WA_OA2C_CLIENT_STR-CREATED_BY sy-vline
WA_OA2C_CLIENT_STR-CREATED_ON sy-vline
WA_OA2C_CLIENT_STR-CREATED_AT sy-vline
WA_OA2C_CLIENT_STR-CHANGED_BY sy-vline
WA_OA2C_CLIENT_STR-CHANGED_ON sy-vline
WA_OA2C_CLIENT_STR-CHANGED_AT sy-vline
WA_OA2C_CLIENT_STR-AUTHORIZATION_ENDPOINT sy-vline
WA_OA2C_CLIENT_STR-TOKEN_ENDPOINT sy-vline
WA_OA2C_CLIENT_STR-REVOCATION_ENDPOINT sy-vline
WA_OA2C_CLIENT_STR-AUTHENTICATION_METHOD sy-vline
WA_OA2C_CLIENT_STR-AUTH_CODE_ALLOWED sy-vline
WA_OA2C_CLIENT_STR-SAML20_ALLOWED sy-vline
WA_OA2C_CLIENT_STR-REFRESH_ALLOWED sy-vline
WA_OA2C_CLIENT_STR-RT_VALIDITY sy-vline
WA_OA2C_CLIENT_STR-REDIRECT_URI_HOST sy-vline
WA_OA2C_CLIENT_STR-REDIRECT_URI_PORT sy-vline
WA_OA2C_CLIENT_STR-CS_SEGMENT_COUNT sy-vline
WA_OA2C_CLIENT_STR-SAML20_NAMEFMT sy-vline
WA_OA2C_CLIENT_STR-SAML20_AUDIENCE sy-vline
WA_OA2C_CLIENT_STR-TARGET_PATH sy-vline
WA_OA2C_CLIENT_STR-RESOURCE_ACCESS sy-vline
WA_OA2C_CLIENT_STR-USER_EMAIL_NUM sy-vline
WA_OA2C_CLIENT_STR-CONFIGURATION sy-vline INTO ld_text SEPARATED BY SPACE. *Add any further fields from structure WA_EKKO_STR you want to CONCATENATE... ENDLOOP. ENDFORM.