SQL Variant only works for a populated value with the argument: 'BaseType else it will return mimaki jv3 service manual pdf a null.
I think in the code you are witnessing someone is converting something when I am not certain of where you would really need to do such a thing.Handling null is a big part of SQL.Your original examples used an " in the prepared statement.EG: declare @Start date getdate, @End datetime getdate, @Int int 1, @DateNull date ; select sql_variant_property Start, 'BaseType, sql_variant_property End, 'BaseType, sql_variant_property Int, 'BaseType, 'BaseType will return three datatypes and a null.I do know that you can handle better memory consumption when you expect more nulls with the sparse option that was introduced I believe in SQL 2008.You use SQL_Variant_Property with a column and then an indication what you want on it's metadata property.Insert into #TBL_sample (ID) values (3 gO, select * from #TBL_sample, gO, update #TBL_sample.A great many people, myself included, at times want to handle null with a value to represent it or else at other times not care.Especially the "l) bit on the end.At other times I may wish to have a user know a null occurrence did something else isnull thing, 'not present for a report.The datatype of a column in a table is maintained of what it needs to be and SQL will not store memory in it when it is null.I would recommend to specify default name, otherwise generated name is not telling you anything about created constraint, see sample below: create table TBL_sample ( ID INT NOT null constraint PK_ID primary KEY, BIT_column BIT NOT null constraint DF_BIT_column default (0) gO, insert into TBL_sample.But I don't know when to cast something that consumes hardly anything to be more.GO, insert into #TBL_sample (ID) values (2).However if it is null it does not tell you much.That said, I have no idea what select myvar coalesce( null Hi was supposed to do, maybe return one row with true or false depending upon the contents of myvar?GO, eDIT: create table #TBL_sample ( ID INT NOT null constraint PK_ID primary KEY, BIT_column BIT null -constraint DF_BIT_column default (0) gO, insert into #TBL_sample (ID) values (1 gO, select * from #TBL_sample, gO, alter table #TBL_sample ADD constraint DF_BIT_column default (0) FOR BIT_column.Svendson, tove, borgvn 23, sandnes 3, pettersen, kari.I know you already have some good answers but SQL_variant_property I think has been misunderstood.As far as I know this is due to SQL saying: "You have no data here, nothing to determine for memory use.".
SET BIT_column 0, where BIT_column IS null, select * from #TBL_sample, gO, dROP table #TBL_sample, gO).
Still other times you can use coalesce for basically an array of posibilities coalesce thing, @otherthing, @yetotherthing, 'unknown.