table to resolve. A nested stored procedure can also create a temporary table with the same name as the temporary table created by the stored procedure that called it. All references t
temporal tables and SQL Server temp tablesSQLSERVERTemp tableYou can also create temporary tables. Temporary tables are similar to permanent tables, but temporary tables are stored in tempdb and are automatically deleted when they are no longer in use.There are both local and global types of temporary tables, which differ in name, visibility, and availability. The name of the local temporary
, the optimizer analyzes and optimizes it and provides an execution plan that is finally stored in the system table. The Transaction-SQL statement of batch processing needs to be compiled and optimized each time it is run, which is relatively slow.
(4). stored procedures can reduce network traffic. For operations (such as queries and modifications) on the same da
of a connection, the connection, and die with the disconnection of connection. They differ in different places, namely the field of view is different. Global table, all authorized connection can be seen. But ordinary SQL Server temporary tables (local temp tables) are only created by connection that can be seen. Specifically, the Isql.exe of SQL Server is a connection per connection. For example, if an
control statements. With great flexibility, they can complete complicated judgment and computation.
(2) stored procedures allow standard components to be programmed. After a stored procedure is created, it can be called multiple times in the program without having to rewrite the SQL statement of the stored
TableUser_info (user_id int not NULL,
user_name varchar( -) not NULL
); Insert intoUser_infoValues(1,'AA'),(2,'BB').......//Let's say we've inserted 10,000 data messages ... Then we want to query the ID> the andId8000 of the data, then we can use a temporary table ...Drop procedure if existsQuery_performance_test;//If this stored
; realjob); DBMS_OUTPUT.PUT_LINE (REALNAME | ''| REALJOB); END; // process call ends(3) method 3 (SQL command line)
1. SQL> exec proc_emp ('parameter 1', 'parameter 2'); // No return value is returned.
2. SQL> var vsal number
SQL> exec proc_emp ('parameter 1',: vsal); // a process call with a return value
Or: call proc_emp ('parameter 1',: vsal); // call a process with a returned valueStored Procedure creation syntax
Create [or replace]
varchar( -) not NULL
); Insert intoUser_infoValues(1,'AA'),(2,'BB').......//Let's say we've inserted 10,000 data messages ... Then we want to query the ID> the andId8000 of the data, then we can use a temporary table ...Drop procedure if existsQuery_performance_test;//If this stored procedure is present, delete ...
compiled every time it is executed, so the efficiency is improved by using the stored procedure. Reduce network traffic. The stored procedure is stored on the server. you only need to pass the name and parameters of the stored
variable is emp_id, and the output variable is count_num. The SELECT statement queries records whose d_id value is equal to emp_id from the employee table, calculates the number of records with the same d_id value using COUNT (*), and finally stores the calculation result in count_num. The code execution result is as follows:
mysql> DELIMITER mysql> CREATE PROCEDURE num_from_employee(IN emp_id INT, OUT co
(2), @ParentName nvarchar (max) Select @real_decrypt_01a = "--Extract the type of the object as a stored procedure or a function, ifTrigger, and also get the name of its parent object select @objtype =type, @parentname =object_name (parent_object_id) from sys.objects where [object_id]=ob JECT_ID (@procedure)--from Sys.sysobjvalues imageval record set @real_01 =
How to Use the result set returned by another stored procedure in a stored procedure
Other descriptions of the same nature as this issue include:How can I retrieve the execution results of dynamic SQL statements in the stored procedure
Test the impact of the stored procedure status on execution, and test the Stored Procedure status.Purpose:
Test the impact of the stored procedure status on the operation of the stored
When IDENTITY_INSERT is set to OFF, you cannot insert an explicit value into the identity column in table ' #TT '.I was in SQL Server to write the stored procedure encountered this error, then thought: how the temporary table has a primary key, I also did not set the primary key.Then I worked with my colleagues to debu
Tags: intermediate technology exists images error structure via modules tableWhen the stored procedure is created, there is no error, but the following error is reported when executing the stored procedure This is because when a stored
the trigger and the stored procedure?
Undoubtedly, triggers are a special type of stored procedures. They are all SQL statement sets.
The difference is that the trigger is triggered by event execution, and the stored procedure is called directly by the storage name. the tri
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.