Structured query language table merging
    3.
    发明授权
    Structured query language table merging 有权
    结构化查询语言表合并

    公开(公告)号:US07725457B2

    公开(公告)日:2010-05-25

    申请号:US10739338

    申请日:2003-12-19

    IPC分类号: G06F7/00 G06F17/30

    CPC分类号: G06F17/30454

    摘要: A method of modifying a Structured Query Language (SQL) statement in order to reduce the number of joins executed by a database is disclosed. The method includes presenting the SQL statement to the database and identifying joins in the SQL statement for removal in accordance with one or more predetermined criteria. For each identified join, the SQL statement may be modified so as to remove the identified join and to change references to a first instance of a table which is referred to by the identified join to a second instance of the table.

    摘要翻译: 公开了一种修改结构化查询语言(SQL)语句以减少数据库执行的连接数量的方法。 该方法包括将SQL语句呈现给数据库,并根据一个或多个预定标准识别SQL语句中的连接以进行删除。 对于每个已标识的连接,可以修改SQL语句,以便删除所标识的连接,并将对由标识的连接引用的表的第一个实例的引用更改为表的第二个实例。

    Structured query language table merging
    4.
    发明申请
    Structured query language table merging 有权
    结构化查询语言表合并

    公开(公告)号:US20050076007A1

    公开(公告)日:2005-04-07

    申请号:US10739338

    申请日:2003-12-19

    IPC分类号: G06F17/30

    CPC分类号: G06F17/30454

    摘要: A method of modifying a Structured Query Language (SQL) statement in order to reduce the number of joins executed by a database is described. The method comprises: a) presenting the SQL statement to the database; b) identifying joins in the SQL statement for removal in accordance with one or more predetermined criteria; and c) for each identified join, modifying the SQL statement so as to remove the identified join and to change references to a first instance of a table which is referred to by the identified join to a second instance of the table.

    摘要翻译: 描述了一种修改结构化查询语言(SQL)语句以减少数据库执行的连接数量的方法。 该方法包括:a)将SQL语句呈现给数据库; b)根据一个或多个预定标准识别SQL语句中的连接以便移除; 和c)对于每个已标识的连接,修改SQL语句以便删除所标识的连接,并将对所标识的连接引用的表的第一个实例的引用更改为表的第二个实例。