CREATEINDEXidx_pname ONPersons (LastName, FirstName); DROP INDEX Statement TheDROP INDEXstatement is used to delete an index in a table. MS Access: DROPINDEXindex_nameONtable_name; SQL Server: DROPINDEXtable_name.index_name; DB2/Oracle: ...
Create a cluster index, named IX_EMP, on table TB_EMP in database DSN8910. Put the entries in ascending order by column EMP_NO. Let DB2 define the data sets for each partition using storage group DSN8G910. Make the primary space allocation be 36 kilobytes, and allow DB2 to use the d...
);-- create indexCREATEINDEXcollege_indexONColleges(college_code); Here, the SQL command creates an index namedcollege_indexon theCollegestable using thecollege_codecolumn. SQL CREATE INDEX Syntax The syntax of the SQLCREATE INDEXstatement is: CREATEINDEXindex_nameONtable_name (column_name1, colu...
sql-statement ::=CREATE [UNIQUE] INDEX [IF NOT EXISTS] [database-name .] index-name ON table-name ( column-name [, column-name]* )column-name ::=name [ COLLATE collation-name] [ ASC | DESC CREATE INDEX命令由"CREATE INDEX"关键字后跟新索引的名字,关键字"ON",待索引表的名字,以及括弧...
CREATE [UNIQUE][CLUSTERED | NONCLUSTERED] INDEX index_name ON {table_name | view_name} [WITH [index_property [,...n]] 说明: UNIQUE:建立唯一索引。 CLUSTERED:建立聚集索引。 NONCLUSTERED:建立非聚集索引。 Index_property:索引属性。 UNIQUE索引既可以采用聚集索引结构,也可以采用非聚集索引的结构,如果...
CREATE [UNIQUE][CLUSTERED | NONCLUSTERED] INDEX index_name ON {table_name | view_name} [WITH [index_property [,...n]] 说明: UNIQUE: 建立唯一索引。 CLUSTERED: 建立聚集索引。 NONCLUSTERED: 建立非聚集索引。 Index_property: 索引属性。 UNIQUE...
CREATE [TEMPORARY] TABLE table (field1 type [(size)] [NOT NULL] [WITH COMPRESSION | WITH COMP] [index1] [, field2 type [(size)] [NOT NULL] [index2] [, …]] [, CONSTRAINT multifieldindex [, …]])The CREATE TABLE statement has these parts:...
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.table1 (column...
SQL CREATE TABLE Statement Example The following example creates a table namedproductwith columns namedproduct_nbr,product_name,product_status_code,start_date,end_dateandraw_material_cost_amt. This SQL CREATE TABLE Statement is executed: CREATE TABLE product ( product_nbr int NOT NULL, ...
The CREATE INDEX statement creates a partitioning index or a secondary index and an index space at the current server. The columns included in the key of the index are columns of a table at the current server. Invocation for CREATE INDEX This statement can be embedded in an application ...