);-- 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
CREATE INDEX index_name ON table_name (column1, column2, ...); CREATE UNIQUE INDEX SyntaxCreates a unique index on a table. Duplicate values are not allowed:CREATE UNIQUE INDEX index_name ON table_name (column1, column2, ...);
syntaxsql Copy CREATE TABLE { database_name.schema_name.table_name | schema_name.table_name | table_name } ( { <column_definition> | [ <table_constraint> ] [ ,... n ] | [ <table_index> ] [ ,... n ] } [ PERIOD FOR SYSTEM_TIME ( system_start_time_column_name , system_...
syntaxsql Copy CREATE TABLE { database_name.schema_name.table_name | schema_name.table_name | table_name } ( { <column_definition> | [ <table_constraint> ] [ ,... n ] | [ <table_index> ] [ ,... n ] } [ PERIOD FOR SYSTEM_TIME ( system_start_time_column_name , system_...
syntaxsql复制 -- Create a new table.CREATETABLE{database_name.schema_name.table_name|schema_name.table_name|table_name} ( {column_name<data_type>[<column_options>] } [ ,...n ] ) [WITH(<table_option>[ ,...n ] ) ] [;]<column_options>::=[COLLATEWindows_collation_name] [NULL|...
SQL基础语法—create index语句 1 create index语句介绍 create index语句用来在表中创建索引。索引的作用提高数据库查询的效率,这个作用对用户来说是透明的,其作用只是对MySQL引擎来说的。 Syntax:CREATE[UNIQUE|FULLTEXT|SPATIAL] INDEX index_name [index_type]ONtbl_name (index_col_name,...)...
Syntax SQLSyntax ❮ PreviousNext ❯ SQL Statements Most of the actions you need to perform on a database are done with SQL statements. SQL statements consist of keywords that are easy to understand. The following SQL statement returns all records from a table named "Customers":...
lengthindex_typeindex_optionvalueindex_typeparser_name string algorithm_option lock_option 14.1.15 CREATE LOGFILE GROUP Syntax 14.1.16 CREATE PROCEDURE and CREATE FUNCTION Syntax 14.1.17 CREATE SERVER Syntax 14.1.18 CREATE TABLE Syntax 14.1.18.1 CREATE TABLE ... LIKE Syntax ...
However, if the table is explicitly qualified, then the authorization ID that is the same as the schema name is the owner of the table. Otherwise, the SQL authorization ID of the process is the owner of the table. Syntax >>-CREATE TABLE--table-name---> .-,---. V | >--+-(--...
Here is the syntax to be used with SQL CREATE TABLE Statement: sql CREATETABLE[IFNOTEXISTS] [Database_name].[Schema_name].table_name ( Column_name datatype [UNIQUE[KEY]|[[PRIMARY] KEY]|CONSTRAINT(NOTNULL|NULL, VISIBLE|INVISIBLE|DEFAULT|CHECK], Column_name datatype [UNIQUE[KEY]|[[PRIMARY...