SAP CN_DB_PLAB_READ Function Module for Read relationships in database

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CN_DB_PLAB_READ is a standard cn db plab read SAP function module available within SAP R/3 or S/4 Hana systems, depending on your version and release level. It is used for Read relationships in database processing and below is the pattern details for this FM, showing its interface including any import and export parameters, exceptions etc. there is also a full "cut and paste" ABAP pattern code example, along with implementation ABAP coding, documentation and contribution comments specific to this or related objects.

See here to view full function module documentation and code listing for cn db plab read FM, simply by entering the name CN_DB_PLAB_READ into the relevant SAP transaction such as SE37 or SE38.

Function Group: CNDB
Program Name: SAPLCNDB
Main Program: SAPLCNDB
Appliation area:
Release date: N/A
Mode(Normal, Remote etc): Normal Function Module
Update:

Function CN_DB_PLAB_READ pattern details

In-order to call this FM within your sap programs, simply using the below ABAP pattern details to trigger the function call...or see the full ABAP code listing at the end of this article. You can simply cut and paste this code into your ABAP progrom as it is, including variable declarations.

CALL FUNCTION 'CN_DB_PLAB_READ'"Read relationships in database
  EXPORTING
   DATUB =  "Date upper limit for DB selection
   DATUV =  "Date lower limit for DB selection
*  FLG_ORDER = ' ' "
*  PLNAL = '  ' "selected alternative (operation specification)
   PLNNR =  "selected task list number
   PLNTY =  "selected task list type
*  FLG_CHK_LOEKZ = ' ' "

 IMPORTING
   ZAEHL_MAX =  "max. counter of changes

TABLES
   PLANAOB =  "Table corresponds to the document table of the AOBs

EXCEPTIONS
   NO_RECORDS = 1 

.

IMPORTING Parameters details for CN_DB_PLAB_READ

DATUB - Date upper limit for DB selection

Data type: PLKO-DATUV
Optional: No
Call by Reference: No ( called with pass by value option)

DATUV - Date lower limit for DB selection

Data type: PLKO-DATUV
Optional: No
Call by Reference: No ( called with pass by value option)

FLG_ORDER -

Data type: RC27X-FLG_SEL
Default: SPACE
Optional: Yes
Call by Reference: No ( called with pass by value option)

PLNAL - selected alternative (operation specification)

Data type: PLKO-PLNAL
Default: ' '
Optional: Yes
Call by Reference: No ( called with pass by value option)

PLNNR - selected task list number

Data type: PLAB-PLNNR
Optional: No
Call by Reference: No ( called with pass by value option)

PLNTY - selected task list type

Data type: PLKO-PLNTY
Optional: No
Call by Reference: No ( called with pass by value option)

FLG_CHK_LOEKZ -

Data type: PLKO-LOEKZ
Default: SPACE
Optional: Yes
Call by Reference: No ( called with pass by value option)

EXPORTING Parameters details for CN_DB_PLAB_READ

ZAEHL_MAX - max. counter of changes

Data type: PLMZ-ZAEHL
Optional: No
Call by Reference: No ( called with pass by value option)

TABLES Parameters details for CN_DB_PLAB_READ

PLANAOB - Table corresponds to the document table of the AOBs

Data type: PLABB
Optional: No
Call by Reference: No ( called with pass by value option)

EXCEPTIONS details

NO_RECORDS - No records exist for the selected task list no.

Data type:
Optional: No
Call by Reference: No ( called with pass by value option)

Copy and paste ABAP code example for CN_DB_PLAB_READ Function Module

The ABAP code below is a full code listing to execute function module POPUP_TO_CONFIRM including all data declarations. The code uses the original data declarations rather than the latest in-line data DECLARATION SYNTAX but I have included an ABAP code snippet at the end to show how declarations would look using the newer method of declaring data variables on the fly. This will allow you to compare and fully understand the new inline method. Please note some of the newer syntax such as the @DATA is not available until a later 4.70 service pack (SP8), which i why i have stuck to the origianl for this example.

ABAP code using 7.40 inline data declarations to call FM CN_DB_PLAB_READ

The below ABAP code uses the newer in-line data declarations. This allows you to see the coding differences/benefits of the later inline syntax. Please note some of the newer syntax below, such as the @DATA is not available until 4.70 EHP 8.

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