What is full hint in Oracle?
Answer: The full hint is an optimizer directive used to force a full table scan of the specified table. The optimizer should always choose a full-table scan when it is the “best” execution plan, depending upon your optimizer_mode setting (first_rows_n vs. all_rows).
Does join use index?
It uses a full index scan of last_updated on the first table for sorting, but does not use an y index for join ( type: index in explain). This is very bad for performance and kills the whole database server, since this is a very frequent query.
What is Oracle hint?
Hints let you make decisions usually made by the optimizer. As an application designer, you might know information about your data that the optimizer does not know. Hints provide a mechanism to direct the optimizer to choose a certain query execution plan based on the specific criteria.
What can I do with the music index?
Formerly The Music Index Online by Harmonie Park Press, Music Index contains cover-to-cover indexing and abstracts of articles about music, musicians and the music industry. In addition to journal articles, it provides citations for book reviews, obituaries and news articles. You may also be interested in:
How many journals are there in the music index?
Cover-to-cover indexing and abstracts from nearly 660 journals Selective coverage for more than 200 journals Formerly The Music Index Online by Harmonie Park Press , Music Index contains cover-to-cover indexing and abstracts of articles about music, musicians and the music industry.
When to use index hint and join hint?
I need to add hint in the join (force using index on ID when doing the join), and on the select (force using index on name for the where clause), as last query mentioned in this post.
What kind of music does the United States listen to?
The music of the United States reflects the country’s pluri-ethnic population through a diverse array of styles. It is a mixture of music influenced by the music of the United Kingdom, West Africa, Ireland, Latin America, and mainland Europe, among other places.
