通过调用hg_create_table_like,系统会根据select_query结果的schema创建一个表名为new_table_name的表,但不会插入任何数据。 参数说明 new_table_name:要创建表的表名(不支持创建外部表),只支持固定字符串,不支持字符拼接或函数生成等。 select_query:查询的SQL语句串。当SQL中的内容完全为select * from tablenam...
To view the new table, refresh the Tables folder in the Object Explorer. The EMPLOYEE table is now available under the Tables node. Thus, you can design a new table using the table designer in SSMS (SQL Server Management Studio).
SQL 复制 CREATE INDEX index1 ON schema1.table1 (column1); 在表上创建聚集索引,并为表使用由 3 个部分组成的名称 SQL 复制 CREATE CLUSTERED INDEX index1 ON database1.schema1.table1 (column1); 使用唯一约束创建非聚集索引并指定排序顺序 SQL 复制 CREATE UNIQUE INDEX index1 ON schema1.tab...
1、hibernate.cfg.xml:show_sql显示sql语句hibernate.cfg.xml:format_sql将显示的sql语句格式化打印出来 2、表和类名不同,对表明进行处理 对程序:使用Anontation,在类的前面加@table xml:? 3、字段名和属性相同 默认认为basic xml中不用写column 4、字段名与属性不同时 Anonnontation ...
partition_scheme_name ( column_name ) specifies the partition scheme for the table. The partition scheme must already exist in the database. To create the partition scheme, see CREATE PARTITION SCHEME (Transact-SQL). column_name specifies the column against which a partitioned index is partition...
syntaxsql Copy CREATE TABLE { database_name.schema_name.table_name | schema_name.table_name | table_name } [ AS FileTable ] ( { <column_definition> | <computed_column_definition> | <column_set_definition> | [ ] [ ,... n ] | [ ] } [ ,... n ] [ PERIOD FOR SYSTEM_TIM...
UNIQUE: This constraint ensures that the query inserts only unique values in the column on which the constraint has been created. CHECK: When we insert a record in a table, the check constraint ensures that the values that we are inserting in a column must satisfy the condition specified in...
ADD COLUMN to variable table? Add prefix in data column Add Time in SQL HH:MM:SS to another HH:MM:SS Adding a column to a large (100 million rows) table with default constraint adding a extra column in a pivot table created uisng T-SQL Pivot Table query Adding a partition scheme to...
--创建源表 BEGIN; CREATE TABLE public.src_table ( "a" int8 NOT NULL, "b" text NOT NULL, PRIMARY KEY (a) ); CALL SET_TABLE_PROPERTY('public.src_table', 'orientation', 'column'); COMMIT; --从select query创建新表,并设置新表属性,自动同步数据 BEGIN; CREATE TABLE public.new_table ...
CREATE LOGIN (Transact-SQL) CREATE MASTER KEY (Transact-SQL) CREATE MESSAGE TYPE (Transact-SQL) CREATE PARTITION FUNCTION (Transact-SQL) CREATE PARTITION SCHEME (Transact-SQL) CREATE PROCEDURE (Transact-SQL) CREATE QUEUE (Transact-SQL) CREATE REMOTE SERVICE BINDING (Transact-SQL) ...