sql create table 语句用于创建新的表。 2. 语法 create table 语句的基本语法如下: create table table_name( column1 datatype, column2 datatype, column3 datatype, ... columnn datatype, primary key( oneormore columns ) ); create table 是 sql 命令,告诉数据库你想创建一个新的表,它后面紧跟的...
In this option, the IDENTITY column must be inserted automatically. An error will be thrown if a manual value is tried to be inserted. CREATETABLEstudent(student_id NUMBER GENERATED ALWAYSASIDENTITY,student_name VARCHAR2(50));-- IDENTITY column gets the data automaticallyINSERTINTOstudent(stude...
Final,Owner={yx},ProcedureBlock,SqlRowIdPrivate,SqlTableName=MyPatients]{Property PatNum As%Library.String(MAXLEN=16)[SqlColumnNumber=2,SqlFieldName=_PatNum];Property PatNu0 As%Library.Integer(MAXVAL=2147483647,MINVAL=-2147483648)[SqlColumnNumber=3,SqlFieldName=%Pat@Num];Property PatNu1 As%Libr...
[UNIQUEKEY][[PRIMARY]KEY][UNIQUELOWER_KEY]} references_clause:REFERENCEStable_name[(column_name,column_name...)][ONDELETE{SETNULL|CASCADE}]constraint_state:[RELY|NORELY][USINGINDEXindex_option_list][ENABLE|DISABLE][VALIDATE|NOVALIDATE]index_option_list: index_option[index_option...]index_option...
SQL CREATE TABLE Syntax CREATETABLEtable_name ( column1 datatype, column2 datatype, column3 datatype, ... ); Here, table_nameis name of the table you want to create columnis the name of a column in the table datatypeis the type of data that the column can hold (e.g., integer...
以下为创建MySQL数据表的SQL通用语法: CREATE TABLE [IF NOT EXISTS] table_name( column_definition1, column_definition2, …….., table_constraints ); 也可简写为: CREATE TABLE table_name (column_name column_type); 上述语法的参数说明如下: ...
Transact-SQL 语法约定 语法 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>::=[COLLATEWindo...
Transact-SQL 语法约定 语法选项 常用语法 简单的 CREATE TABLE 语法(如果不使用选项,则很常见): syntaxsql 复制 CREATE TABLE { database_name.schema_name.table_name | schema_name.table_name | table_name } ( { <column_definition> } [ ,... n ] ) [ ; ] 完整语法 基于磁盘的 CREATE TABLE...
簡單CREATE TABLE 語法 (如果沒有使用選項則通用): syntaxsql 複製 CREATE TABLE { database_name.schema_name.table_name | schema_name.table_name | table_name } ( { <column_definition> } [ ,... n ] ) [ ; ] 完整語法 磁碟型 CREATE TABLE 語法: syntaxsql 複製 CREATE TABLE { database...
{_PUBLIC}, ProcedureBlock, SqlRowIdPrivate, SqlTableName = TempEmp ] { Property EMPNUM As %Library.Integer(MAXVAL = 2147483647, MINVAL = -2147483648) [ Required, SqlColumnNumber = 2 ]; Property NAMELAST As %Library.String(MAXLEN = 30) [ Required, SqlColumnNumber = 3 ]; Property NAME...