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  • Database Functions

    Database Functions Comparison and conversion functions Cast Coalesce Greatest Least NullIf Date functions Extract DateField extracts DateTimeField extracts Now T...
  • DROP DATABASE

    删除数据库 概要 描述 参数 注意 示例 兼容性 另见 删除数据库 删除一个数据库。 概要 DROP DATABASE [ IF EXISTS ] name 描述 DROP DATABASE 删除了一个数据库。它删除了数据的目录条目并且删除了包含该数据的目录。它只能被拥有该数据库的用户执行。另外,当用户或者是其他用户...
  • Copying a Database

    Copying a Database Copying a Database To copy a database within a single mongod process, or between mongodservers, simply connect to the target mongod and use thecommand() me...
  • Database(index)

    Database 属性 Command command Geo Geo 方法 Database.collection(name: string): Collection Database.createCollection(collectionName: string): Promise<Object> Database.serverDate(opt...
  • Updating in the database

    Updating in the database Updating in the database Now let’s load a single photo from the database, update it and save it: import { createConnection } from "typeorm" ; ...
  • Database Functions

    Database Functions Comparison and conversion functions Cast Coalesce Greatest Least Date functions Extract DateField extracts DateTimeField extracts Now Trunc DateField tr...
  • Database Names

    Database Names Database Names ArangoDB will always start up with a default database, named _system.Users can create additional databases in ArangoDB, provided the databasenames...
  • Database Methods

    Database Methods Collection Create All Collections Collection Name Drop Truncate Database Methods Collection returns a single collection or nulldb._collection(collecti...
  • DROP DATABASE

    DROP DATABASE 语法图 示例 MySQL 兼容性 另请参阅 DROP DATABASE DROP DATABASE 语句用于永久删除指定的数据库 schema,以及删除所有在 schema 中创建的表和视图。与被删数据库相关联的用户权限不受影响。 语法图 DropDatabaseStmt ::= 'DR...
  • ALTER DATABASE

    ALTER DATABASE Synopsis Syntax alter_database alter_database_option Semantics name tablespace_name ALLOW_CONNECTIONS CONNECTION_LIMIT IS_TEMPLATE See also ALTER DATA...