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...
Databricks SQL Databricks Runtime 13.3 LTS 和更新版本 將標籤套用至資料表。 您需要具有APPLY TAG權限,才能將標籤新增至資料表。 tag_name 字面上的STRING.tag_name在資料表或資料行內必須是唯一的。 tag_value 字面上的STRING. 適用於: Databricks SQL Databricks Runtime 13.3 LTS 和以上版本 從資料表...
Flink SQL> show databases; +---+ | database name | +---+ | default_database | | alan_test | +---+ 2 rows in set Flink SQL> ALTER database default_catalog.alan_test set('createdate'='2023-11-20'); [INFO] Execute statement succeed. Flink SQL> show databases; +---+ | data...
ユーザー定義またはシステム提供の制約名は、sys.check_constraint、sys.default_constraints、sys.key_constraints、およびsys.foreign_keysカタログ ビューに対してクエリを実行することにより確認できます。 XML インデックスがテーブルに存在する場合、PRIMARY KEY 制約は削除できません。
For more information, see Disable indexes and constraints and Enable indexes and constraints. REORGANIZE a rowstore index For rowstore indexes, REORGANIZE specifies to reorganize the index leaf level. The REORGANIZE operation is: Always performed online. This means long-term blocking table locks aren'...
NotImplementedError: No support for ALTER of constraints in SQLite dialect 错误原因 如今用的数据库是mysql,可是当软件安装完之后会自己主动生成一个SQLite 轻量级数据库。在这儿之所以会出错是由于此处用了SQLite。 而上面的同步命令不符合SQLite的语法,所以会出错 ...
ALTER TABLE table_constraints Syntax für speicheroptimierte Tabellen 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 ] } ) ] [ COLLA...
You must also have space quota in the tablespace in which space is to be acquired in order to use the add_table_partition, modify_table_partition, move_table_partition, and split_table_partition clauses. Additional Prerequisites for Constraints and Triggers...
TheALTER TABLEstatement is also used to add and drop various constraints on an existing table. 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:...
REVOKE[GRANTOPTIONFOR]{EXECUTE|ALL[PRIVILEGES]}ONFUNCTIONSFROM{[GROUP]role_name|PUBLIC}[,...][CASCADE|RESTRICT|CASCADECONSTRAINTS] revoke_on_types_clause子句用于回收类型的权限。 REVOKE[GRANTOPTIONFOR]{USAGE|ALL[PRIVILEGES]}ONTYPESFROM{[GROUP]role_name|PUBLIC}[,...][CASCADE|RESTRICT|CASCADECONSTRAIN...