资讯

Oracle9i offers some great tools to make it easy to view the execution plan and trace information for a SQL statement. Prior to Oracle8i, you had to create a plan table and execute special syntax ...
What’s your average success rate of getting a SQL statement right on the first try? In best case, you botched a simple statement without side effects and just have to try again with correct s… ...
Occasionally you might want to submit SQL statements that are not queries, such as statements that drop tables or create indexes. These non-query, non-SELECT statements do not produce output. You can ...
FROM statement using source data that's known to have flaws. Back to the OP - either filter out the bad records in the WHERE clause, or put a CASE statement in the UPDATE list. No need for a cursor.
You can't use wildcards in statements like you want. The easiest way for you to do what you want is to just grant the user the db_datareader role and make sure they're not part of a group with the ...