Here, the SQL command checks if a table namedCompaniesexists, and if not, it creates a table with specified columns. Create Table Using Another Existing Table In SQL, we can create a new table by duplicating an existing table's structure. Let's look at an example. -- create a backup t...
%msg&sql(CREATEGLOBALTEMPORARYTABLETempEmp(EMPNUMINTNOTNULL,NAMELASTCHAR(30)NOTNULL,NAMEFIRSTCHAR(30)NOTNULL,CONSTRAINTEMPLOYEEPKPRIMARYKEY(EMPNUM)))ifSQLCODE=0{w!,"表创建"}else{w!,"SQLCODE=",SQLCODE,": ",%msg}}
要为表指定一个数据库,可以在 CREATE TABLE语句之前使用 USE database_name语句(在Hive 0.6和更高版本中),或者使用数据库名修饰表名(在Hive 0.7和更高版本中使用“database_name.table.name”)。 有关 table comments, table properties, 和 SerDe properties 的更多信息,请参考下面 Alter Table。 ...
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|...
So, let's create a new table calledherowith the following columns: id: anINTEGERthat will be theprimary key(checkPK✅). name: aTEXT, it should beNOT NULL(checkNN✅), so, it should always have a value. secret_name: aTEXT, it should beNOT NULLtoo (checkNN✅). ...
(v_table_oidISNULL)THENRAISE EXCEPTION'table does not exist';ENDIF;-- start the create definitionv_table_ddl :='CREATE TABLE "'||in_table_name||'" ('||E'\n';-- define all of the columns in the table; https://stackoverflow.com/a/8153081/3068233FORv_column_recordINSELECTc.column...
SELECT COLUMN_NAME,DESCRIPTION FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME='MyTable' SQL提供了一个%FILE关键字,该关键字用于提供记录表的文件名。 %FILE后面跟着用单引号括起来的文本字符串。 一个表定义只能有一个%FILE关键字; 指定多个会产生SQLCODE -83错误。 SQL提供了可选的%EXTENTSIZE和%NUMROWS关...
Create the Table Model Class Define the Fields, Columns Optional Fields, Nullable Columns Primary Key id Create the Engine Engine Database URL Engine Echo Engine Technical Details Create the Database and Table SQLModel MetaData Calling create_all() SQLModel MetaData Order Matters Migrations...
= column_set_name XML COLUMN_SET FOR ALL_SPARSE_COLUMNS <table_constraint> ::= [ CONSTRAINT constraint_name ] { { PRIMARY KEY | UNIQUE } [ CLUSTERED | NONCLUSTERED ] ( column_name [ ASC | DESC ] [ ,... n ] ) [ WITH FILLFACTOR = fillfactor | WITH ( <index_option> [ ,... ...
In order to test CLOB columns in SQL Server server, I used the SQL Server command line interface to create a test table with one CLOB column: herong> sqlcmd -S localhost -U Herong -P T0pSecret 1> -- Set AdventureWorks as the current database 2> USE AdventureWorksLT2019; 3> GO 1>...