more indexes
i want 2 indexes. likes can't mssql.
i have example fields: school class number
i want school , class in index can this:
school class number 1 2 435 1 4 4535 1 5 265 2 1 8234 2 2 8493 4 3 943 4 2 493 4 6 934
but how can in sql server management studio
i declare unique constraint. borrowing segio's ddl:
create table dbo.orderrows ( id int identity(1, 1) not null primary key ,ordernr varchar(20) not null ,orderrow varchar(20) not null ,rowtotal decimal(11, 3) default 0 not null ,constraint uq_orderrows unique(ordernr, orderrow) );
above under hood create unique index on column combination (ordernr, orderrow).
tibor karaszi, sql server mvp | web | blog
SQL Server > Transact-SQL
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