Note: Unlike Oracle, DDL commands suchasCREATE TABLEdonot implicitly occur within their own transaction. enterprisedb.com enterprisedb.com 注意:与Oracle有所不同的是,像CREATETABLE这样的DDL命令不会在它们自己拥有的事务中在隐含状态下运行。 enterprisedb.com ...
CREATE TABLE t1 ( id int(11) COMMENT "", value varchar(8) COMMENT "" ) DUPLICATE KEY(id) DISTRIBUTED BY HASH(id) BUCKETS 10 PROPERTIES ( "colocate_with" = "group1" ); CREATE TABLE t2 ( id int(11) COMMENT "", value1 varchar(8) COMMENT "", value2 varchar(8) COMMENT "" ) D...
The data definition language (DDL) is not a language on its own, but it includes a series of commands that are used in SQL to change the structure of a database. Learn how to alter the structure of a database using the DDL commands dubbed CREATE, DROP, and ALTER. Related...
The IF NOT EXISTS clause can be used to create a table from scratch or to create a table using the structure of another table. The following two SQL statements are both valid: CREATE TABLE IF NOT EXISTS Customer (First_Name char(50), Last_Name char(50), Address char(50), City char(...
Configure the basic information about the MaxCompute table After you perform the preceding operations, you can configure the information about the table on the table configuration tab. On the tab, you can configure the information about the table by executing a DDL statement or by using the code...
CREATE TABLE census_data (last_name STRING, first_name STRING, state STRING, address STRING) SORT BY (last_name, state) STORED AS PARQUET; Likewise, if an existing table contains data without any sort order, you can reorganize the data in a more efficient way by usingINSERTorCREATE TABLE ...
5.Delete a table from Azure storage using the command Remove-AzStorageTable Remove-AzStorageTable –Name $tableName –Context $ctx 6.To verify that the above commands have removed the table use below command to retrieve the list of tables: ...
Typically, you use this option for scripted applications that are running SQL commands. When you suppress the Table not found error message, the scripted application is not impacted or halted. The following conditions apply when you use this option: You cannot use the IF NOT EXISTS option with...
For additional out-of-line constraint details, see CREATE | ALTER TABLE … CONSTRAINT. Note Do not specify copy options using the CREATE STAGE, ALTER STAGE, CREATE TABLE, or ALTER TABLE commands. We recommend that you use the COPY INTO <table> command to specify copy options.Variant...
Complete CREATE TABLE DDL statement. --name [text] Table name.Optional Parameters --defined-tags [complex type] Defined tags for this resource. Each key is predefined and scoped to a namespace. Example: {“foo-namespace”: {“bar-key”: “value”}} This is a complex type whose value ...