c) SAVEPOINT:This command helps in roll backing the transactions till a certain point. For example, a transaction consists of several DML commands and we want to undo the changes till a certain point and not co
The most common command types in DDL areCREATE,ALTERandDROP. All three types have a predefined syntax that must be followed for the command to run and changes to take effect. 1.CREATE Syntax CREATE TABLE [table name] ([column definitions]) [table parameters]; The semicolon at the end of...
strings in the DDL command syntax or comments, or both Only one DDL parameter can be used in a parameter file, but you can combine multiple inclusion and exclusion options to filter the DDL to the required level. The filtering options of theDDLparameter are valid for a primary Extract that...
● strings in the DDL command syntax or comments, or both DDL参数详细说明请参考下一章节<DDL参数说明> 3. derived object 以下面的创建 index 为例 CREATE INDEX hr.indexPayrollDate ON TABLE hr.tabPayroll (payDate); 其中tabPayroll 是基础 object,而 indexPayrollDate 就是 derived object。 在进行 D...
DDL Command DESCRIPTION SYNTAX CREATE Create a table and its columns together with their datatype. CREATE TABLE ALTER Modify column names and add or delete a column. ALTER TABLE RENAME Change the name of the table. RENAME TABLE COMMENT
In this way, DDL commands are converted to JSON statements and necessary information is provided to rebuild DDL commands in the target location. Compared with the original DDL command strings, the benefits of parsing DDL statements from the syntax tree include: Each parsed database object has a ...
GRANT Command:User access privileges to a database are given by this command. It can be used to grant SELECT, INSERT, UPDATE, and DELETE privileges to a user on a single table or several tables. Syntax:GRANT SELECT, UPDATE ON MY_TABLE TO SOME_USER, ANOTHER_USER; ...
strings in the DDL command syntax or comments, or both Only one DDL parameter can be used in a parameter file, but you can combine multiple inclusion and exclusion options to filter the DDL to the required level. The filtering options of theDDLparameter are valid for a primary Extract that...
This function uses the following syntax: SELECT rds_aurora.limitless_distribute_function('function_prototype', ARRAY['shard_key'], 'collocating_table'); The function takes the following parameters: function_prototype –The function to be distributed. Mention only the input arguments, and not any ...
SHOW COLUMNS SHOW CREATE TABLE SHOW VIEWS SHOW CREATE VIEW DML Syntax DQL Syntax Auxiliary Command Syntax Reserved Keywords SQL Functions and Operators Implicit Data Type Conversion Appendix Hudi SQL Syntax Reference Delta SQL Syntax Reference API Reference SDK Reference FAQs More Documents ...