/ Published in: PL/SQL I'm pretty meh about Oracle's PL/SQL, but its inability to reference and change sequences has been pretty frustrating over the years. Until now. Thanks to the Puget Sound Oracle Users Group's website (psoug.org) for showing me how to do this....
There could be data in the table which violates an unvalidated constraint. So the database can no longer rely on it to optimize some operations. For example, usingconstraints to get better execution plans. To overcome this it's good practice to validate constraints. This ensures all existing r...
In this blog, I’ll walk you through the need for Oracle and Snowflake and then explore two methods for migration: manual migration and using automated tools. By the end, you’ll have a clear understanding of how to seamlessly transition from Oracle to Snowflake, no matter your expertise l...
1 alter table AO_60DB71_LEXORANK modify column rank varchar(255) collate utf8_bin; Query your database again, as described in the 'Diagnosis' section, to confirm that the collation for the RANK column has been set correctly. PostgreSQL Diagnosis The correct...
2. Map out skills needs for now and the future: Next, business leaders can collaborate with HR to map out what skills their departments need now and how those needs will likely shift over time as advances in technology, products, and industry practices alter role requirements. Some HCM platfo...
Migrate Data from Oracle to MS SQL Server Get a DemoTry it Migrate Data from MongoDB to PostgreSQL Get a DemoTry it Step 4: Creating a Linked Server in SQL Server For this step, it is recommended that you leverage the following T-SQL snippet to create the linked server to your SQLi...
Once a SET TRANSACTION READ ONLY statement successfully executes, only SELECT (without a FOR UPDATE clause), COMMIT, ROLLBACK, or non-DML statements (such as SET ROLE, ALTER SYSTEM, LOCK TABLE) are allowed in the transaction. Otherwise, an error is returned. A COMMIT, ROLLBACK, or DDL ...
Indexes. They're one of the most powerful and misunderstood aspects of SQL performance. In this post we'll look at the purpose of an index, how to create and choose choose your index type. Then finish with a discussion of how to decide what to index and
You can use alter tablespace command to extend tablespace in Oracle: SQL> alter tablespace RAIDDATA add datafile 'FILE_LOCATION' size 100m autoextend on maxsize 31G; Note: You can find file location from the 1st query as mentioned above. In case of ASM, use diskgroup name as a file loca...
on the other hand, why I alter system generated constraint name, but the constraint still works...however, the oracle book said we cannot use alter table ...rename constraint to rename system generated constraint.SOLUTION johnsone🇺🇸 2009/6/09 membership Create a free account to see thi...