SAP DD_COMPARE_TAB Function Module for Compares two table versions

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DD_COMPARE_TAB is a standard dd compare tab SAP function module available within SAP R/3 or S/4 Hana systems, depending on your version and release level. It is used for Compares two table versions 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 dd compare tab FM, simply by entering the name DD_COMPARE_TAB into the relevant SAP transaction such as SE37 or SE38.

Function Group: SDD2
Program Name: SAPLSDD2
Main Program: SAPLSDD2
Appliation area: S
Release date: N/A
Mode(Normal, Remote etc): Normal Function Module
Update:

Function DD_COMPARE_TAB 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 'DD_COMPARE_TAB'"Compares two table versions
  EXPORTING
*  SAPTAB = 'X' "'X' = SAP table; ' ' = Pool/cluster
   SOURCE1 =  "'B' = DB, 'S' = SAP name table, 'D' = DD
   SOURCE2 =  "'B' = DB, 'S' = SAP name table, 'D' = DD
   TABNAME =  "Table name
   VERS1 =  "'A'=Active,'N'=Inactive, N-version, 'M'= newest version
   VERS2 =  "'A'=Active,'N'=Inactive, N-version, 'M'= newest version

 IMPORTING
   FIELDNAME =  "first different field
   SUBRC =  "'0' = versions are equal, else unequal

EXCEPTIONS
   FUNCTION_NOT_YET_SUPPORTED = 1 

.

IMPORTING Parameters details for DD_COMPARE_TAB

SAPTAB - 'X' = SAP table; ' ' = Pool/cluster

Data type: DD02L-AS4LOCAL
Default: 'X'
Optional: Yes
Call by Reference: No ( called with pass by value option)

SOURCE1 - 'B' = DB, 'S' = SAP name table, 'D' = DD

Data type: DD02L-AS4LOCAL
Optional: No
Call by Reference: No ( called with pass by value option)

SOURCE2 - 'B' = DB, 'S' = SAP name table, 'D' = DD

Data type: DD02L-AS4LOCAL
Optional: No
Call by Reference: No ( called with pass by value option)

TABNAME - Table name

Data type: DD02L-TABNAME
Optional: No
Call by Reference: No ( called with pass by value option)

VERS1 - 'A'=Active,'N'=Inactive, N-version, 'M'= newest version

Data type: DD02L-AS4LOCAL
Optional: No
Call by Reference: No ( called with pass by value option)

VERS2 - 'A'=Active,'N'=Inactive, N-version, 'M'= newest version

Data type: DD02L-AS4LOCAL
Optional: No
Call by Reference: No ( called with pass by value option)

EXPORTING Parameters details for DD_COMPARE_TAB

FIELDNAME - first different field

Data type: DD03L-FIELDNAME
Optional: No
Call by Reference: No ( called with pass by value option)

SUBRC - '0' = versions are equal, else unequal

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

EXCEPTIONS details

FUNCTION_NOT_YET_SUPPORTED - Function is supported later

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

Copy and paste ABAP code example for DD_COMPARE_TAB 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 DD_COMPARE_TAB

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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