INDEX-EXISTS- — Tests for the existence of a database index.
Function
nameThe name of the index as a string, symbol or SQL expression.
owner
A string, NIL or :all.
databaseA database object which defaults to *default-database*.
resultA Boolean.
Tests for the existence of an SQL index called
name in database
which defaults to
*default-database*. owner
is NIL by default which means that only indexes owned by users
are examined. If owner is a string
denoting a user name, only indexes owned by
owner are examined. If
owner is :all then all
indexes are examined.