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Updating using cursor oracle sex dating in porterfield wisconsin

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There are two types of cursors in PL/SQL: These are created by default when DML statements like, INSERT, UPDATE, and DELETE statements are executed.

They are also created when a SELECT statement that returns just one row is executed.

A cursor is a temporary work area created in the system memory when a SQL statement is executed.The problem is that some of the data is already in the database and it may only need updating.Following this question, the selected strategy is to perform the update and, if the record does not exist, then insert it. The insert string is very similar to the update string above: def insert_or_update(connection, identifier, article, citations=None): cursor = connection.cursor() cursor.setinputsizes(cx_Oracle. CLOB, 20) cursor.prepare(UPDATE_STATEMENT) cursor.execute(None, (article, citations, identifier)) connection.commit() try: cursor.setinputsizes(cx_Oracle. There are two types of cursors − Implicit cursors are automatically created by Oracle whenever an SQL statement is executed, when there is no explicit cursor for the statement.Programmers cannot control the implicit cursors and the information in it.There can be either static cursors, whose SQL statement is determined at compile time, or dynamic cursors, whose SQL statement is determined at runtime.