In this page, we list the SQL syntax for each of the SQL commands in this tutorial, making this an easy reference for someone to learn SQL. For detailed explanations of each SQL syntax, please go to the individual section by clicking on the keyword.The...
Hinweis: SQL wird nicht nur zum Bearbeiten von Daten, sondern auch zum Erstellen und Ändern des Entwurfs von Datenbankobjekten wie Tabellen verwendet. Der zum Erstellen und Ändern von Datenbankobjekten verwendete Teil von SQL wird als Datendefinitionssprache (Data Definition Langua...
Note:SQL is not only used for manipulating data, but also for creating and altering the design of database objects, such as tables. The part of SQL that is used for creating and altering database objects is called data-definition language (DDL). This topic does not cover DDL....
14.10.3 SQL Syntax for Online DDL 在线DDL SQL语法 通常情况下, 你不需要做任何事情来启用在线DDL, 当使用ALTER TABLE 语句。 See Table 14.6, “Summary of Online Status for DDL Operations” 对于DDL操作的类型 允许并发的DML, 一些变化需要特定配置的组或者ALTER TABLE 子句 你可以控制特定在线DDL操作的各...
To configure this submission method in Flink 1.15, you need to use the SET 'key'='value' command in your SQL script. This is different from the optimization parameters used in Flink 1.12. For details about the syntax, see SQL Client Configuration. ● The following Flink connectors are added...
In actual services, you may need to grant different operation permissions on resources to users of different roles. The IAM service provides fine-grained access control. An IAM administrator (a user in the admin group) can create a custom policy containing required permissions. After a policy is...
DDL commands play a crucial role in defining the database schema. Data Manipulation Language (DML) Commandsin SQL What is DML Commands in SQL? Data Manipulation Language (DML) is a subset of SQL commands used for adding (inserting), deleting, and modifying (updating) data in a database. ...
The WAITFOR command has been enhanced in several ways in Yukon. Besides waiting for a specified duration or until a certain datetime value, you can now request to wait for a T-SQL statement to affect at least one row. You can specify that the command wait on one of the following statemen...
ADD PARTITION Section 17.12.1, “Online DDL Operations” ALTER DATABASE Section 15.1.2, “ALTER DATABASE Statement” Section 12.5, “Configuring Application Character Set and Collation” Section 12.3.3, “Database Character Set and Collation” Section 19.2.5.1, “Evaluation of Database-Level ...
ADD PARTITION Section 17.12.1, “Online DDL Operations” ALTER DATABASE Section 15.1.2, “ALTER DATABASE Statement” Section 12.5, “Configuring Application Character Set and Collation” Section 12.3.3, “Database Character Set and Collation” Section 19.2.5.1, “Evaluation of Database-Level ...