for read only

Do not specify a for update when defining a cursor or for read only,ase to check to see if the cursor is updatable;If a cursor query statement contains an ORDER BY clause, the ASE defines the cursor as read-only, and in other cases it is defined as

Because the version number is inconsistentPrompt after opening PD file:Click "OK" to open, click "Cancel" can not openHowever, after opening the modified save prompt:Workaround:The PDM file is actually an XML file that is opened directly with a text

Do not know what situation the recent U disk problems, open U disk after all the files have a lock on the logo, just start not too care, and then want to continue in the U disk in the storage of things only to find that it is at this time the U disk

 select does not have a read-only property, so you need to include a span outside of the select, which can be changed by JS, and you need a friend to refer to the following In the project development process we often encounter to set the Drop-down

In general, there are several situations that require you to set the database to read-only: 1. Insert,update,delete Trigger 2. Check constraints and Delete triggers 3. Set the database to read-only 4. Put the table in a read-only filegroup 5. Reject

In the project development process we often encounter to set the Drop-down box read-only (ReadOnly), but unfortunately the select has no read-only attribute, so you need to include a span outside the select, through JS to change. The following HTML

8.2 Opening a Standby Database for Read-Only or Read/Write Access8.2 When a standby database is open for read-only access, users can query the standby database but cannot update it. thus, you can reduce the load on the primary database by using the

OracleDataGuard _ slave database read-only or read/write access Oracle Data Guard _ slave database read-only or read/write access Opening a Standby Database for Read-Only or Read/Write Access 8.2 Access the standby database in read-only or

I. cursor Recognition Cursor allows you to access the result set returned by SQL Server row by row.A major reason for using cursor is to convert the set operation into a single record processing method.After retrieving data from a database using

1. IntroductionBeing in the MySQL community and being able to feel everyone's expectations and enthusiasm for MySQL 5.7, it seems that everyone is eager to learn, learn and use MySQL 5.7. So, we can not help but ask, what has MySQL 5.7 done, what

1. cursor Concept A cursor is a pointer to a query result set. It is a set of SQL statements associated with a select statement by defining a statement. The cursor contains two aspects: ● Cursor result set: the result set obtained by executing the

Http://www.blogjava.net/terry-zj/archive/2005/12/06/22792.html   Http://forum.javaeye.com/viewtopic.php? T = 1603   However, there is no clear conclusion. Let's take a look at the transaction definition: Reference: Transactions are described in

READ: From this point of time set the point of Start (Point a) to the end of this transaction, other transactions submitted data, the transaction will not be visible. (No data submitted by others after point A in the query) Application

SQL SERVER Reference: Explanation and example of cursors (Cursor) Each cursor must have four components, these four key parts must conform to the following order; 1.DECLARE Cursors2.OPEN Cursors3. Fetch information from a cursor4.CLOSE or

When the Dataguard upgrade CPU, found that the main standby library can not be synchronized, the log error, so in the main library after the upgrade of the execution of the script "@catbundle. SQL CPU Apply" cannot be synchronized to the standby

The following articles mainly introduce the basic tutorial of SQL coding optimization for the IBM DB2 database. The importance of such a specific query is that the more important the query is, you may need to optimize indexes by creating indexes. If

When the slave uard upgrades the CPU, it finds that the master and slave databases cannot be synchronized and the log reports an error. Therefore, the script @ catbundle after the upgrade is executed in the master database. sqlcpuapply cannot be

Logon database Tiger causes the slave uard to be not synchronized. tigerdataguard When the slave uard upgrades the CPU, it finds that the master and slave databases cannot be synchronized and the log reports an error. Therefore, the script "@

Original: http://ntk2006.blog.sohu.com/135331235.html Cursor ConceptCursors provide a flexible way to retrieve and operate data from tables. cursors are mainly used on servers to process SQL statements sent from clients to servers, or data

8.4 efficient index for performance improvement Most importantly, creating an index is more cautious than not creating an index. Many databases are complicated due to the excessive use of indexes. After a long time, the reasons for creating indexes