sql server - sqlserver scalar function returning result of select -

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i want function find maximum allowable length of field. invoke in behind code, using cmd.executescalar(). however, can't function definition right.

this 1 of things tried:

create function getpwlen ( ) returns int begin    return select max(len((password))) return_value tblsec end go

any appreciated.

no need column alias, wrap select in brackets

... return (select max(len(password)) tblsec) ...

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