4 Legs Coffee Table with Storage US$10.00-50.00 100 Sets (MOQ) Product Details Customization: Available Style: Modern Material: Chipboard Contact Supplier Chat Still deciding? Get samples of US$ 20/Set Request Sample SHOUGUANG DAWN FOREST WOOD CO., LTD. Manufacturer/Factory Diamond ...
<column_set_definition> ::= column_set_name XML COLUMN_SET FOR ALL_SPARSE_COLUMNS <table_constraint> ::= [ CONSTRAINT constraint_name ] { { PRIMARY KEY | UNIQUE } [ CLUSTERED | NONCLUSTERED ] ( column_name [ ASC | DESC ] [ ,... n ] ) [ WITH FILLFACTOR = fillfactor | WITH (...
SET NULL:表示从父表中删除或更新行,并将子表中的外键列设置为NULL。 VISIBLE表示列可见,是默认的列状态。 INVISIBLE表示列不可见,当将一个列设置为INVISIBLE后,在查询时该列将不会被默认显示。 GENERATED BY DEFAULT AS IDENTITY | GENERATED ALWAYS AS IDENTITY可选项,指定一个列为自增列。具体如下: ...
SET ( {storage_parameter = value} [, ... ] ) 修改表的一个或多个存储参数。 RESET ( storage_parameter [, ... ] ) 重置表的一个或多个存储参数。与SET一样,根据参数的不同可能需要重写表才能获得想要的效果。 OWNER TO new_owner 将表、序列、视图的属主改变成指定的用户。 SET {COMPRESS|NOCO...
[ WITH ( {storage_parameter = value} [, ... ] ) ] [ USING INDEX TABLESPACE tablespace_name ] 参数说明 UNLOGGED 如果指定此关键字,则创建的表为非日志表。在非日志表中写入的数据不会被写入到预写日志中,这样就会比普通表快很多。但是非日志表在冲突、执行操作系统重启、数据库重启、主备切换、切...
WITH DATA:自动同步数据 WITH NO DATA:不自动同步数据。 如果不指定,默认为WITH DATA。 使用示例 将非分区表复制成一张新的非分区表。 准备一张源表和数据。 BEGIN; CREATE TABLE public.src_table ( "a" int8 NOT NULL, "b" text NOT NULL, PRIMARY KEY (a) ); CALL SET_TABLE_PROPERTY('public.sr...
When you look at master tables, such as Customer, Vendor, or Item, notice that the primary key is the same for every table. All master tables use theNo.field as their primary key. This field is implemented with a data type ofCode, meaning that the primary key values are always set in...
Every field has certain essential characteristics, such as a name that uniquely identifies the field within a table, a data type that defines the nature of the data, the operations that can be performed on the data, and how much storage space to set aside for each value. ...
SET ROWCOUNT (Transact-SQL)对 CREATE EXTERNAL TABLE AS SELECT 没有影响。 要实现类似的行为,请使用TOP (Transact-SQL)。 有关文件名限制,请查看命名和引用容器、Blob 和元数据。 字符错误 数据中存在的以下字符可能会导致错误,包括拒绝使用 CREATE EXTERNAL TABLE AS SELECT 记录到 Parquet 文件。