querycursor

The following example shows how to query data using a cursor created using the connection's cursor() method. ... cursor() query = (SELECT first_name, last_name ...

Returns true if the cursor has documents and can be iterated. cursor.hint(). Forces MongoDB to use a specific index for a query.

2024年4月7日 — DECLARE CURSOR 會定義Transact-SQL 伺服器資料指標的屬性，例如立資料指標運作時的捲動行為以及用以建立結果集的查詢。 OPEN 陳述式可擴展結果集，而 ...

2021年9月12日 — Cursor Variables with REF CURSOR. REF CURSOR最大的好處就是，一般我們在進行query時，需要透過一般cursor FETCH所有資料到一個變量上，但有了REF ...

With query cursors in Cloud Firestore, you can split data returned by a query into batches according to the parameters you define in your query.

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2023年10月25日 — SQL cursor is T-SQL logic to loop over a predetermined number of rows one at a time to update data or perform DBA processes such as backups.

A database cursor is an object that enables traversal over the rows of a result set. It allows you to process individual row returned by a query. SQL Server ...

2023年4月27日 — Cursors allow us to process data row-by-row, which can be useful when we need to perform complex calculations or transformations on the data.