visit_CreateIndexDefinition

# File activerecord/lib/active_record/connection_adapters/abstract/schema_creation.rb, line 91
        def visit_CreateIndexDefinition(o)
          index = o.index

          sql = ["CREATE"]
          sql << "UNIQUE" if index.unique
          sql << "INDEX"
          sql << o.algorithm if o.algorithm
          sql << "IF NOT EXISTS" if o.if_not_exists
          sql << index.type if index.type
          sql << "#{quote_column_name(index.name)} ON #{quote_table_name(index.table)}"
          sql << "USING #{index.using}" if supports_index_using? && index.using
          sql << "(#{quoted_columns(index)})"
          sql << "WHERE #{index.where}" if supports_partial_index? && index.where

          sql.join(" ")
        end