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SELECT * FROM (SELECT ROW_NUMBER OVER (ORDER BY sort_key ASC) AS row_number, columns FROM tablename) AS foo WHERE row_number <= 10 ROW_NUMBER can be non-deterministic : if sort_key is not unique, each time you run the query it is possible to get different row numbers assigned to any rows where sort_key is the same.
SQL includes operators and functions for calculating values on stored values. SQL allows the use of expressions in the select list to project data, as in the following example, which returns a list of books that cost more than 100.00 with an additional sales_tax column containing a sales tax figure calculated at 6% of the price.
High-cardinality column values are typically identification numbers, email addresses, or user names. An example of a data table column with high-cardinality would be a USERS table with a column named USER_ID. This column would contain unique values of 1-n. Each time a new user is created in the USERS table, a new number would be created in the ...
The following example EXCEPT query returns all rows from the Orders table where Quantity is between 1 and 49, and those with a Quantity between 76 and 100. Worded another way; the query returns all rows where the Quantity is between 1 and 100, apart from rows where the quantity is between 50 and 75.
Internally, the Module maintains a monotonically increasing counter. The Module looks for the keywords _row_count and _row_count_hold in the table. Keyword _row_count is replaced with the next counter value; keyword _row_count_hold is replaced with the value from the last _row_count replacement.
After going on over 30 safaris in South Africa, there are a few things I wish someone would have told me before my first one. ... However, in private reserves, the number of vehicles is limited ...
You might be surprised how much better you feel during the day after a good night’s rest — and less inclined to over-snack. DepositPhotos.com. 7. Manage Your Stress.
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