Lab Sql

If a 'WITH NOLOCK' query hint is used on a View in SQL Server, does it propagate that hint … Read more Using With Nolock Table Hint In Query Using View - Does It Propagate Within The View?

I'm working on Postgres 9.2. There are 2 UPDATEs, each in their own transactions. One looks li… Read more Postgres, Update And Lock Ordering

I'm trying to delete 267 records out of about 40 million. The query looks like: delete from pr… Read more "the Total Number Of Locks Exceeds The Lock Table Size" Deleting 267 Records

I have the following SQL: SELECT id, url FROM link WHERE visited = false ORDER BY id LIMIT 500… Read more How I Make Result Of Sql Querys With Limit Different In Each Query?

I am trying to update a MySQL InnoDB table with c. 100 million rows. The query takes close to an ho… Read more Update Mysql Table In Chunks

Given a table of logical resource identifiers (one per row), what is the best way for an arbitrary … Read more Using Sql Server As Resource Locking Mechanism