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PostgreSQL documentation

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are for different index access methods.

</para>

<para>

The user who defines an operator class becomes its owner. The user

must own the data type for which the operator class is being defined,

and must have execute permission for all referenced operators and functions.

The user who defines an operator class becomes its owner. Presently,

the creating user must be a superuser. (This restriction is made because

an erroneous operator class definition could confuse or even crash the

server.)

</para>

<para>

ReleaseSysCache(tup);

if (!superuser())

elog(ERROR,"Must be superuser to create an operator class");

typeoid=typenameTypeId(stmt->datatype);

if (!pg_type_ownercheck(typeoid,GetUserId()))

aclcheck_error(ACLCHECK_NOT_OWNER,format_type_be(typeoid));

storageoid=InvalidOid;