您要查找的是不是:
- 不計except
- 計入reckon in
- 計件by the job
- 例如,以下查詢通過將某個出版商的所有書籍的價格上調10%更新titles表For example, the following query updates the titles table by adding 10%25 to the price of all titles for one publisher
- 液位計juice level gauge
- ROWS ONLY子句來限制返回到查詢的數據量。ROWS ONLY clause on your SQL statements to limit the amount of data returned to a query.
- 為確保數據不失去同步,可以在titles和publishers表之間強制引用完整性。To make sure your data is not out of sync, you can enforce referential integrity between the titles and publishers tables.
- 硬度計sclerometer
- pg_num_rows()返回PostgreSQL result中的行的數目。Pg_num_rows() will return the number of rows in a PostgreSQL result resource.
- 例如,在titles表中,可以使用更新查詢將特定出版商的所有書籍的價格上調10%。For example, in a titles table you can use an Update query to add 10%25 to the price of all books for a particular publisher.
- 計畫plan
- 例如,如果對titles表的price列的值進行合計,將無法同時顯示單個書名、出版商名稱等。For example, if you are totaling the value of the price column of the titles table, you would not also display individual titles, publisher names, and so on.
- 時計hour meter
- 如果您的記錄集非常大,那麼在訪問Rows屬性時,應注意使儘可能多的行保持共享。If your record set is very large, you should be careful to keep the rows shared as much as possible when accessing the Rows property.
- titleauthors表的主鍵是au_id列(authors表的主鍵)和title_id列(titles表的主鍵)的組合。The primary key of the titleauthors table is the combination of the au_id column (the authors table's primary key) and the title_id column (the titles table's primary key).
- 事前計提基金advanced funding
- all-rows的設置也適用於不感知(ODBC靜態)游標,因為當游標打開時整個結果都實現了。A setting of all-rows is also appropriate for insensitive (ODBC static) cursors since the entire result is materialized when the cursor is opened.
- 用計maneuver
- 只需加上所期望的LOB值的平均大小、再乘以Num_Rows,然後再加上聚集索引的總大小。It is sufficient to just add the average size of the LOB values that are expected, multiply by Num_Rows, and add that to the total clustered index size.
- 體重計batheroom scales