Recently in the activity, need to use the stored procedures, found on the internet to feel the use of triggers better, and share the hope for you to be useful.A trigger is a special type of stored procedure that differs from the stored procedure we
In-depth analysis of SQL Server triggers and SQL
A trigger is a special type of stored procedure, which is different from the stored procedure we introduced earlier. A trigger is triggered by an event and automatically called for execution. The
Background only computers with an IP address can connect to the SQLServer server. Other clients are not allowed to connect to the server. The solution can be directly restricted in the firewall and only allow 1433 communication with the specified IP
Mysql + php database operations
Class DbQueryForMysql {/*** Maximum number of records returned by the select Method*/Const max_row_num= 1000;
/*** Data Query Result set object* @ Var object $ dataSet*/Public $ dataSet = NULL;
/*** Data source object*
By the end of the year, I have made some preparations for my work and study problems and some common knowledge points for future use. This article involves the database, which is a summary of development (1) --- supplement to the database article. 1.
This article describes how to use the stored procedure to obtain and consume points. For more information, see section 1. GM_JF Customer Account integral table 2. GM_JF_DETAIL customer account credit consumption record 3. GM_JF_ACTION_RULES Integral
I. Problems Encountered
We have written a lot of batch processing statements in our previous courses. These batch processing statements have two problems:
1. Unable to pass parameters like functions (custom)
2. It cannot be called repeatedly like a
We often encounter this situation. It is often used to create a temporary table with in the stored procedure. This temporary table is used multiple times in this function module. If you use with to create a temporary table with the same function,
Error message that is seen in the distributor-to-subscriber history:Attempted command: if @ @trancount > 0 rollback TRAN (transaction sequence number: 0x00014f30000020d9010700000000, command id:667)Error message: The Distribution Agent failed to
1. What is a transaction: a transaction is an inseparable logical unit of work. It is used as the smallest control unit to execute concurrent operations on the database system. All the database operation commands contained in the database are
SQL Server transactions
1. What is a transaction: a transaction is an inseparable logical unit of work. It is used as the smallest control unit to execute concurrent operations on the database system.
All the database operation commands contained in
Dear friends! Remember the previous blogs about stored procedures! Next, let us have a deeper understanding and use it as a joint transaction, so that it can give full play to its advantages. First, I will briefly introduce the transaction
The author is molakalapalli, Gopi
With the introduction of the try/catch blocks in SQL Server 2005 transactions can be handled in well-organized fashion like below.
This will insure that no open transactions hanging on the server as a result of
By the end of the year, I have made some preparations for my work and study problems and some common knowledge points for future use. This article involves the database, which is a summary of development (1) --- supplement to the database article.
1.
-- Typical transaction programming example
-- Begin transaction is the start transaction, commit transaction is the commit transaction, and rollback transaction is the rollback transaction
-- In this example, insert a record first. If an error
1. Create the database teaching (including the course, score, teacher, class, and teach_class tables ).
use mastergoif exists(select * from sysdatabases where name='teaching')drop database teachingcreate database teachingon (name =teaching,filename =
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