[orm] [bug]修复了 ORM 中with_loader_criteria()不会应用到Select.join()的 bug,其中 ON 子句被给定为普通的 SQL 比较,而不是作为关系目标或类似的东西。 这是在 2.0 版本中修复的同一问题的回溯,针对 2.0.22。 参考:#10365 1.4.51 发布日期:2024 年 1 月 2 日 orm [orm] [bug]改进了首次在版本...
It is better for you to find a common field and join. If you can't, you can use union an...
array_append 函式 「array_compact」函式 array_contains 函數 array_distinct 函式 array_except 函數 「array_insert」函式 array_intersect 函式 array_join 函式 array_max 函式 array_min 函數 array_position 函式 「array_prepend」 函式 array_remove 函數 array_repeat 函式 array_size 函式 array_...
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Joining two tables on columns encrypted deterministically is only possible if both columns are encrypted using the same column encryption key. Deterministic encryption must use a column collation with a binary2 sort order for character columns. Randomized encryption uses a method that encrypts data in...
If a table with the same name as the one to be copied already exists in the destination Oracle database, then: If the two tables do not have the same column definitions, the copy is not performed. If the two tables have the same column definitions and if Include Data was specified, th...
If you need to append data to each other, you can use the union option in the physical layer of the canvas in Tableau. In some cases your database does not support this option, so you can use custom SQL instead. For example, suppose you have the following two tables: November and Dec...
(2)Nested tables (3)Index-by tables (4)Host arrays --从本质上讲,使用特殊的block或者subprogram来降低context switches可以提高性能。当SQL语句在loop内使用collection elements作为bind variables来运行时,就会产生大量的context switches。 Bulk SQLminimizes the performance overhead of the communication between PL...
The relationship is specified with a delete rule of RESTRICT or SET NULL and would cause the two tables to be delete-connected to each other. The relationship is specified with a delete rule of CASCADE and would cause two tables to be delete-connected to each other where the delete rule of...
The BULK COLLECT INTO clause can improve the performance of queries that reference collections. You can use BULK COLLECT INTO with tables of scalar values, or tables of %TYPE values. The PL/SQL block in Example 6-10 queries multiple values into PL/SQL tables, with and without...