val tableEnv = StreamTableEnvironment.create(env) val dataTable = tableEnv.fromDataStream(dataStream,'id,'timestamp.rowtime,'temperature) // val dataTable =tableEnv.fromDataStream(dataStream,'id,'timestamp,'temperature,'rt.rowtime) // 2.在建表时 + rowtime // val tableEnv = StreamTableEnviron...
CREATE TABLE允许使用 SQL数据类型(例如,VARCHAR(24)或CHARACTER VARING(24))或通过直接指定它映射到的数据类型类(例如,%Library.String(MAXLEN=24)或%String(MAXLEN=24))来指定数据类型。(对于所有数据类型类,语法形式%Library.Datatype和%Datatype是同义词。) 通常, SQL(如CREATE TABLE命令)指定数据类型。可以直...
IF NOT EXISTSis optional, and it causes table creation to be silently skipped if a table of the given name already exists in the store, and the table's definition exactly matches the provided definition. No error is returned as a result of the statement execution. If this statement phrase ...
%msg&sql(CREATEGLOBALTEMPORARYTABLETempEmp(EMPNUMINTNOTNULL,NAMELASTCHAR(30)NOTNULL,NAMEFIRSTCHAR(30)NOTNULL,CONSTRAINTEMPLOYEEPKPRIMARYKEY(EMPNUM)))ifSQLCODE=0{w!,"表创建"}else{w!,"SQLCODE=",SQLCODE,": ",%msg}}
find datatypes from stored procedure Find date closest to getDate() Find FQDN using TSQL Find Hexadecimal value Find IP address of Server instance Find last record update or inserted date Find match between two string fields. Find multiple substring using a single query in single column Find ...
第十五章 SQL命令 CREATE TABLE(二) 全局临时表 指定GLOBAL TEMPORARY关键字将表定义为全局临时表。表定义是全局的(对所有进程都可用);表数据是...
See CREATE TYPE for more on user-defined datatypes declared as non-persistable types. COLLATE The COLLATE clause lets you specify a data-bound collation for the column. For column_collation_name, specify a valid named collation or pseudo-collation. For columns of data type CLOB or NCLOB, ...
在迁移过程中,如果CreateTable操作失败,可能有以下几个原因: 数据库连接问题:首先需要确保CakePHP应用程序的数据库连接配置正确,并且能够成功连接到数据库服务器。 权限问题:检查数据库用户是否具有足够的权限来执行CreateTable操作。确保数据库用户具有创建表的权限。 表名或字段名重复:如果要创建的表名或字段名已经存在...
第十五章 SQL命令 CREATE TABLE(二) 第十五章 SQL命令 CREATE TABLE(二) 全局临时表 指定GLOBAL TEMPORARY关键字将表定义为全局临时表。表定义是全局的(对所有进程都可用);表数据是临时的(在进程期间持续存在)。相应的类定义包含一个附加的类参数SQLTABLETYPE=“GLOBAL TEMPORARY”。与标准的 IRIS表一样,Class...
CREATE TABLE emp_data ( name text, age integer, designation text, salary integer ); The above command will create a table called emp_data with four columns - name, age, designation and salary and their datatypes are text, integer, text and integer. ...