Triggers usagePosted by: Purnelle Stéphane Date: August 30, 2016 10:20AM Hi I have a trigger (AFTER INSERT) who run fine. This trigger find if data on a table exist and insert or update (depending if data exist or no in this table) but I need to do the same things for a...
In this syntax, old_table_name is the current name of the table, and new_table_name is the desired new name. Examples 1. Basic Table Renaming RENAME TABLE customers TO clients; Powered By This simple example renames the customers table to clients. 2. Renaming Multiple Tables RENAME TABLE...
VIEW_TABLE_USAGE テーブル (MySQL 8.0.13 で使用可能) を使用すると、ビュー定義で使用されるテーブルおよびビューに関する情報にアクセスできます。 情報を表示できるのは、一部の権限を持つビューおよび一部の権限を持つテーブルの場合のみです。 VIEW...
The `REPLACE` statement in MySQL is used to insert or update data in a table. It functions similarly to `INSERT`, but it first deletes any existing row with the same primary key and then inserts the new row. Usage The `REPLACE` statement is used when you want to ensure that a row ...
CONSTRAINT_NAME='PRIMARY'、TABLE_NAME='t1'、COLUMN_NAME='s3'、ORDINAL_POSITION=1、POSITION_IN_UNIQUE_CONSTRAINT=NULLを含む 1 つの行。 NDBの場合: この値は常にNULLです。 CONSTRAINT_NAME='CO'、TABLE_NAME='t3'、COLUMN_NAME='s2'、ORDINAL_POSITION=1、POSITION_IN_UNIQUE_CONSTRAINT=1を含む 1 ...
(This implies theusercanreadanyfileinanydatabasedirectory, because the server can accessanyofthose files.) TheFILEprivilege also enables theusertocreatenew filesinanydirectorywherethe MySQL server has write access. This includes the server's data directory containing the files that implement the ...
Use MaxCompute in DataWorks,DataWorks:DataWorks allows you to easily build an offline data warehousing and analytics system based on MaxCompute. In the DataWorks console, you can configure MaxCompute nodes, enable periodical scheduling of...
Use EMR in DataWorks,DataWorks:DataWorks allows you to create nodes such as Hive, MR, Presto, and Spark SQL nodes based on an E-MapReduce (EMR) compute engine. In the DataWorks console, you can configure EMR nodes, enable periodic ...
Huawei Cloud is one of world's first Kubernetes Certified Service Providers (KCSPs) and is among the first Chinese participants in the Kubernetes community. Huawei Cloud is also a founder and platinum member of Cloud Native Computing Foundation (CNCF). CCE is among the world's first container ...
and is among the first Chinese participants in the Kubernetes community. Huawei Cloud is also a founder and platinum member of Cloud Native Computing Foundation (CNCF). CCE is among the world's first container services to pass the Certified Kubernetes Conformance Program. ...