syntaxsql Kopieren ALTER TABLE { database_name.schema_name.table_name | schema_name.table_name | table_name } { ALTER COLUMN column_name { [ type_schema_name. ] type_name [ ( { precision [ , scale ] | max | xml_schema_collection } ) ] [ COLLATE collation_name ] [ NULL | NOT...
ALTER TABLE - ADD Column To add a column in a table, use the following syntax: ALTERTABLEtable_name ADDcolumn_name datatype; The following SQL adds an "Email" column to the "Customers" table: ExampleGet your own SQL Server ALTERTABLECustomers ...
visitAddColumns方法是ANTLR插件自动为我们生成的方法,定义在SparkSqlAstBuilder的父类AstBuilder中(AST,Abstract Syntax Tree ,抽象语法树),这个方法用来处理我们在SqlBase.g4中定义的| ALTER TABLE tableIdentifier ADD COLUMNS ('(' columns=colTypeList ')')? #addColumns,我们这里重载了visitAddColumns方法用来提取表...
ALTER TABLE table_constraints メモリ最適化テーブルの構文 syntaxsql コピー ALTER TABLE { database_name.schema_name.table_name | schema_name.table_name | table_name } { ALTER COLUMN column_name { [ type_schema_name. ] type_name [ ( { precision [ , scale ] } ) ] [ COLLATE coll...
* SQL Server * SQL 托管实例 语法 syntaxsql复制 ALTERDATABASEdatabase_name{<add_or_modify_files>|<add_or_modify_filegroups>}<add_or_modify_files>::={ADDFILE<filespec>[ ,...n ] [TOFILEGROUP{filegroup_name} ] |ADDLOGFILE<filespec>[ ,...n ] |REMOVEFILElogical_file_name|MODIFYFILE<fil...
syntaxsql 复制 ALTER DATABASE { database_name | CURRENT } SET { <option_spec> [ ,...n ] [ WITH <termination> ] } <option_spec> ::= { <accelerated_database_recovery> | <auto_option> | <automatic_tuning_option> | <change_tracking_o...
If none are given, ALTER TABLE does nothing. The syntax for many of the permissible alterations is similar to clauses of the CREATE TABLE statement. column_definition clauses use the same syntax for ADD and CHANGE as for CREATE TABLE. For more information, see Section 15.1.20, “CREATE ...
改變SQL Server 中的現有 Always On 可用性群組。 大部分 ALTER AVAILABILITY GROUP 引數僅在目前的主要複本上支援。 不過,JOIN、FAILOVER 和 FORCE_FAILOVER_ALLOW_DATA_LOSS 引數只在次要複本上支援。 Transact-SQL 語法慣例 語法 syntaxsql ALTERAVAILABILITYGROUPgroup_name{SET(<set_option_spec>) |ADDDATABAS...
syntaxsql 复制 ALTER DATABASE { database_name | CURRENT } SET { <option_spec> [ ,...n ] [ WITH <termination> ] } <option_spec> ::= { <accelerated_database_recovery> | <auto_option> | <automatic_tuning_option> | <change_tracking_option> | <containment_option> | <cursor_option...
Transact-SQL 语法约定 语法 syntaxsql 复制 ALTER AVAILABILITY GROUP group_name { SET ( <set_option_spec> ) | ADD DATABASE database_name | REMOVE DATABASE database_name | ADD REPLICA ON <add_replica_spec> | MODIFY REPLICA ON <modify_replica_spec> | REMOVE REPLICA ON <server_instance> ...