MSCEWI4052

Some functional table elements may have been reordered to a new Alter Table statement.

This is a deprecated version of the SnowConvert documentation, please visit the official site HERE.

This EWI was added for an old version of SQL Server SnowConvert

Severity

Medium

Description

This EWI is added when different table elements do not have a functional equivalence in Snowflake or have a transformation planned. A new Alter Table statement is generated and commented out to avoid compilation problems.

Code Example

Input Code:

ALTER TABLE
    [Person].[EmailAddress]
ADD
    Dummy_Column VARCHAR(32),
    Another_Column datetime2 GENERATED ALWAYS AS ROW START HIDDEN NOT NULL DEFAULT SYSUTCDATETIME()
    CONSTRAINT [DF_EmailAddress_rowguid] DEFAULT 5 FOR [rowguid],
    

Output Code:

ALTER TABLE
Person.EmailAddress
ALTER rowguid SET DEFAULT 5;


/*** MSC-ERROR - MSCEWI4050 - DEFAULT CONSTRAINT MOVED TO A NEW ALTER TABLE STATEMENT ***/
ALTER TABLE
    Person.EmailAddress
ADD
    Dummy_Column VARCHAR(32);

/*** MSC-WARNING - MSCEWI4051 - INVALID TABLE ELEMENTS WERE REORDERED ***/    
--ALTER TABLE
--    Person.EmailAddress
--ADD
--    Another_Column datetime2 GENERATED ALWAYS AS ROW START HIDDEN NOT NULL DEFAULT SYSUTCDATETIME() /*** MSC-ERROR - MSCEWI1031 - SYSUTCDATETIME FUNCTION NOT SUPPORTED ***/
;  

Recommendations

• If there are no valid table elements in the default clause, the alter table will be totally commented out.

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