要创建已创建的临时表,请使用 CREATE GLOBAL TEMPORARY TABLE 语句。 要声明已声明的临时表,请使用 DECLARE GLOBAL TEMPORARY TABLE 语句。 调用 此语句可以嵌入在应用程序中,也可通过动态 SQL 语句来发出。 它是一个可执行语句,仅当 DYNAMICRULES 运行行为对于程序包有效时才能动态编译 (SQLSTATE 42509)。 授权 该...
ALTER TABLEtable_name{ADD|DROP|MODIFY}column_name{data_ype}; SQL ALTER TABLE(rename)语句 ALTERTABLEtable_name RENAMETOnew_table_name; SQL INSERT INTO语句 INSERT INTOtable_name( column1, column2...columnN) VALUES ( value1, value2...valueN); SQL UPDATE语句 UPDATEtable_nameSETcolumn1=value...
1. 用create table 语句建立actor_name 表 2. 用inset into actor select插入子查询的结果集(不需要用values(),()这种形式。这种形式是手工插入单条数据或多条数据时用圆括号分割。插入结果集是不需要) 即,插入单条数据或是多条数据时,需要使用values语句进行数据的插入 例如:insert into table (ziduan1,ziduan...
Tables are created with no data unless a subquery is specified. You can add rows to a table with theINSERTstatement. After creating a table, you can define additional columns, partitions, and integrity constraints with theADDclause of theALTERTABLEstatement. You can change the definition of an ...
适用于:SQL Server Azure SQL 数据库 Azure SQL 托管实例 Microsoft Fabric SQL 数据库在数据库中创建新表。备注 有关Microsoft Fabric 中仓库的引用,请访问 CREATE TABLE (Fabric 数据仓库)。 有关Azure Synapse Analytics 和 Analytics Platform System (PDW) 的参考,请访问 CREATE TABLE (Azure Synapse Analytics...
Applies to: SQL Server 2012 (11.x) and later. Creates the new table as a FileTable. You don't specify columns because a FileTable has a fixed schema. For more information, see FileTables. column_name AS computed_column_expression An expression that defines the value of a computed column...
( SLICE s1 VALUES LESS THAN (10) DATANODE dn1, SLICE s2 VALUES LESS THAN (20) DATANODE dn2, SLICE s3 VALUES LESS THAN (30) DATANODE dn3, SLICE s4 VALUES LESS THAN (MAXVALUE) DATANODE dn4 ); --RANGE分片指定多DN策略示例 gaussdb=# create table lrt_range (f_int1 int, f_int2 ...
CREATE INDEX index1 ON schema1.table1 (column1); 在資料表上建立叢集索引並為資料表使用 3 部分名稱 SQL 複製 CREATE CLUSTERED INDEX index1 ON database1.schema1.table1 (column1); 建立具有唯一條件約束的非叢集索引並指定排序次序 SQL 複製 CREATE UNIQUE INDEX index1 ON schema1.table1 (...
CREATE TABLE AS SELECT in Azure Synapse Analytics and Microsoft Fabric creates a new table based on the output of a SELECT statement. CTAS is the simplest and fastest way to create a copy of a table.
The CREATE TABLE statement defines a table. The definition must include its name and the names and attributes of its columns. The definition can include other attributes of the table, such as its primary key or check constraints.