Oracle PL/SQL:CREATE TABLE statement: create a table with primary key.CREATE TABLE statement can be used to create table objects in database. It is possible to add constraints like primary key ,foreign key while table creation.Primary key is the unique identifier for a row of data.One ...
WITH table-option- 可选-一个或多个表选项(如一个或多个%CLASSPARAMETER子句或STORAGETYPE子句)的逗号分隔列表。 COLLATE sqlcollation- 可选-指定以下SQL排序规则类型之一:%Exact、%Minus、%Plus、%SPACE、%SQLSTRING、%SQLUPPER、%TRUNCATE或%MVR。默认值为名称空间默认排序规则(除非更改,否则为%SQLUPPER)。%SQL...
%msg&sql(CREATEGLOBALTEMPORARYTABLETempEmp(EMPNUMINTNOTNULL,NAMELASTCHAR(30)NOTNULL,NAMEFIRSTCHAR(30)NOTNULL,CONSTRAINTEMPLOYEEPKPRIMARYKEY(EMPNUM)))ifSQLCODE=0{w!,"表创建"}else{w!,"SQLCODE=",SQLCODE,": ",%msg}}
Step 1. Here, we will create two table(Parent and Child). We will create "tblMyEmployee" as the primary table and "tblMyDepartment" as the sub-table. Sub table is used to reduce redundancy and complexity. It is helpful to divide the large database table into smaller tables ...
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...
CREATETABLE[tblPatient]( [Patient_ID][bigint]IDENTITY(1,1), [Patient_code][varchar](50)NOTNULL, [Patient_name][varchar](50), [Address][varchar](25), [City][varchar](50), [AppointmentDate][datetime], )ON[PRIMARY] Now, run the following query to insert a record with a NULL value....
Index DDLBEIndex [ Extent, SqlName = "%%DDLBEIndex", Type = bitmap ]; /// DDL Primary Key Specification Index PatientPK On PatNum [ PrimaryKey, SqlName = Patient_PK, Type = index, Unique ]; } CREATE TABLE中指定的字段名称在class属性中显示为SqlFieldName值。 在动态选择操作期间, IRIS...
] parameter_data_type [ NULL ] [ = default ] } [ , ...n ] ) RETURNS { return_data_type } [ WITH <clr_function_option> [ , ...n ] ] [ AS ] EXTERNAL NAME <method_specifier> [ ; ] Syntax for CLR table-valued functions. syntaxsql 复制 CREATE [ OR ALTER ] FUNCTION [ ...
WITH NO DATA:不自动同步数据。 如果不指定,默认为WITH DATA。 使用示例 将非分区表复制成一张新的非分区表。 准备一张源表和数据。 BEGIN; CREATE TABLE public.src_table ( "a" int8 NOT NULL, "b" text NOT NULL, PRIMARY KEY (a) ); CALL SET_TABLE_PROPERTY('public.src_table', 'orientation...
class Hero(SQLModel, table=True): id: Optional[int] = Field(default=None, primary_key=True) name: str secret_name: str age: Optional[int] = None sqlite_file_name = "database.db" sqlite_url = f"sqlite:///{sqlite_file_name}" engine = create_engine(sqlite_url, echo=True) SQL...