Simple CREATE TABLE syntax (common if not using options): syntaxsql Copy CREATE TABLE { database_name.schema_name.table_name | schema_name.table_name | table_name } ( { <column_definition> } [ ,... n ] ) [ ; ] Full syntax Disk-based CREATE TABLE syntax: syntaxsql Copy CREATE...
engine = create_engine("mysql+mysqldb://root:123456@127.0.0.1/todo?charset=utf8") metadata = MetaData() # table user = Table("user", metadata, Column("id", Integer, nullable=False, primary_key=True, autoincrement=True), Column("username", String(20), nullable=False), Column("age", ...
CREATE TABLE [IF NOT EXISTS] [catalog_name.][db_name.]table_name ( { <physical_column_definition> | <metadata_column_definition> | <computed_column_definition> }[ , ...n] [ <watermark_definition> ] [ <table_constraint> ][ , ...n] ) [COMMENT table_comment] [PARTITIONED BY (parti...
/// d ##class(PHA.TEST.SQL).CreateTable()ClassMethodCreateTable()As%String{&sql(CREATETABLESample.Employee(EMPNUMINTNOTNULL,NAMELASTCHAR(30)NOTNULL,NAMEFIRSTCHAR(30)NOTNULL,STARTDATETIMESTAMP,SALARYMONEY,ACCRUEDVACATIONINT,ACCRUEDSICKLEAVEINT,CONSTRAINTEMPLOYEEPKPRIMARYKEY(EMPNUM)))IFSQLCODE=0{WRITE...
2. column name | type | nullable | default value 3. 通常 Id 都是 primary key, 但是 nonclustered 或 clustered 就不一定 4. 如果有 nature key, 那么通常它是 unique + clustered 创建Column ALTERTABLE[Product]ADD[NewColumn]nvarchar(256)NOTNULLDEFAULT''; ...
id = Column(Integer, primary_key=True, autoincrement=True) 那么这里Column 用到3个参数 Integer 设置为整形 primary_key 设置主键 autoincrement 自增 给User 表加一个name 用户名字段,用户名不能为空,设置nullable=False 代码语言:javascript 代码运行次数:0 运行 AI代码解释 name = Column(String(10), null...
SQL_COLUMN_ALIAS SQL_CORRELATION_NAME SQL_CREATE_ASSERTION SQL_CREATE_CHARACTER_SET SQL_CREATE_COLLATION SQL_CREATE_DOMAIN SQL_CREATE_SCHEMA SQL_CREATE_TABLE SQL_CREATE_TRANSLATION SQL_DDL_INDEX SQL_DROP_ASSERTION SQL_DROP_CHARACTER_SET SQL_DROP_COLLATION SQL_DROP_DOMAIN SQL_DROP_SCHEMA SQL_DROP_...
Disk-based CREATE TABLE syntax: syntaxsql Kopéieren CREATE TABLE { database_name.schema_name.table_name | schema_name.table_name | table_name } [ AS FileTable ] ( { <column_definition> | <computed_column_definition> | <column_set_definition> | [ <table_constraint> ] [ ,... n ]...
说明:当使用者通过使用 DBCOLUMNDESC 的wType成员定义列的数据类型时,SQL Server Native Client OLE DB 访问接口使用 DBPROP_COL_FIXEDLENGTH 以确定数据类型映射。有关详细信息,请参阅ITableDefinition 中的数据类型映射。 DBPROP_COL_NULLABLE R/W:读/写 ...
Simple CREATE TABLE syntax (common if not using options): syntaxsql העתק CREATE TABLE { database_name.schema_name.table_name | schema_name.table_name | table_name } ( { <column_definition> } [ ,... n ] ) [ ; ] Full syntax Disk-based CREATE TABLE syntax: syntaxsql ...