sql server cell level encryption

If you want to set the SQL Server database transaction isolation level to committed read-only snapshot isolationIf you run the following statement directly:ALTER Database [Mydbname] SET read_committed_snapshot onmay be blocked for a long time. My side has not been executed for 4 hours in the formal environment test.You can choose to run the following statement:if

SQL Server provincial and county level three linkageThree tables recursively merge into a table SQL as follows:Insert into table2 (area_name,area_parent_id)Select Province, ' 0 ' from provincesInsert into table2 (area_name,area_parent_id)Select City,c.id from Cities aInner JOIN provinces B on A.provinceid=b.provinceidI

Set TRANSACTION Isolation Level XXX--each setting is only for the current transaction blockXXX Value:READ UNCOMMITTEDREAD COMMITTEDRepeatable READSNAPSHOTSERIALIZABLETest1 table data is as follows:Update the Name for AAAAA now and set the 2-minute delayThe above update uses Rowlock by default, so for the table is the IX lock (line 12th), at this point, if the query other rows, is not blocked, because IX is compatible with IS.However, if update uses TA

Tags: SQL Server  In recent days, the company's technical maintenance staff frequently let me recover the database, because they are always missing the where condition, resulting in update, delete has unrecoverable consequences, plus those libraries are dozens of G. It takes about more than 10 minutes to recover. To this end, find some information and summary, give a few ways to quickly restore the table,

table as soon as possible and minimize the impact on other tables and users during the recovery process. SQL Server (especially after 2008) has many backup and recovery features: full, partial, file, differential, and transactional backups. The choice of the recovery model severely affects the backup strategy and the type of backup. Here are a few scenarios to consider, but remember that each has its own