Repeat the steps 3-5, now paying attention to the byte sequences. If a sequence of bytes can be encoded with a complex token, use the complex token. If there are ambiguities (say, "abc" can, at some point, be encoded as "a" + "bc" or "ab" + "c"), use the one with the ...
Rather than allowing Oracle to have total control over how a query is executed, you can provide specific directions to the optimizer through the use of hints. A hint , in Oracle, is an optimizer directive embedded in a SQL statement in the form of a comment. Here is a query with an op...
Almost instant.Note that we are using the tables themselves as dummy rowsets for iterating the steps.We can't assume that either of the tables contains the number of rows we need. That's why we'll just add LIMIT 30 to each of the tables and then LIMIT 30 the whole query....