Process function ProgrammingPractical purpose(1) Master the basic function of stored procedure and storage function advanced database object.(2) Master the creation, modification, viewing and deletion of stored procedures and stored
Database PL/SQL script language function learning notes function build syntax rules: create [or replace] function function_name [(parameter,…)] Return datatype is variable declaration; begin statement ;... [Execption statement;…] The end;
Table functions can use query statements or cursors as input parameters and output multiple rows of data. This function can be executed in parallel and continuously output data streams, known as pipeline output. The table function can be used to
Select y. *, z. Z_NAME, j. JS_NAME from t_yonghu y, t_zhan z, t_juese j where y. fk_z_id = z. z_id and y. fk_js_id = j. js_id
Select y. *, z. Z_NAME from t_yonghu y, t_zhan z where y. fk_z_id = z. z_idUnionSelect y. *, B. BZ_NAME from t_yonghu y,
PL/SQL subprograms include functions and procedures. The function here refers to the user-defined function, which is different from the system function. A subroutine is a PL/SQL block that completes a specific function. It is universal and can be
In mysql, the replace () function is used most frequently to replace the specified characters or strings in the field. The following describes how to use the replace () function.
In mysql, the replace () function is used most frequently to replace
Store PHP session data to code instances in the database and session data. Store PHP session data to code instances in the database. session data is stored on multiple websites in a development environment and requires different sessions. There are
The usage of the MySQLreplace function to replace string statement bitsCN. comMySQL replace function is frequently used. The following describes the usage of the MySQL replace function in detail. it is helpful to learn about the MySQL replace
Storing the session data of PHP into the code instance in the database, session data storage
A development environment has a number of sites, need to use a different session, a lot of solutions. But this time also tall on a, with the data inventory,
1. Length of the stringYou can use the length function to evaluate the length of a string. Length returns a value. The value is equal to the number of characters in the parameter.Example: Use the length FunctionSQL> select last_name, length
I have been working as an internal enterprise system for N years.
A few years ago, its department came to a country (not USA) and was younger than ours. Of course, I grew up drinking foreign ink. English is very slippery. Once I had a good time, I
CopyCode The Code is as follows:
Copy code The Code is as follows: function ()
{
This. V1 = 10;
}
A. Prototype. Print = function ()
{
Alert (this. V1 );
}
Function B ()
{
}
B. Prototype = new ();
New B (). Print ();
The output of running this code
The main content of this article is as follows:
6.1 Introduction
6.2 create a function
6.3 stored procedures
6.3.1 creation process
6.3.2 call a stored procedure
6.3.3 AUTHID
6.3.4 PRAGMA AUTONOMOUS_TRANSACTION
6.3.5 procedure
6.3.6 deletion process
Here we will share two code instances that store the PHP session data to the database, respectively for PostgreSQL and MySQL. if you need it, you can refer to the next development environment with multiple websites, different sessions are required,
Document directory
2.1 wrap
2.2 create_wrapped
Oracle Stored Procedure Encryption
The business secrets we include in Oracle stored procedures are sometimes unwilling to be seen by third-party personnel. They can be achieved through
SQL string Substitution handler function
Create function Dbo.regexreplace(@source varchar (5000),--Original string@regexp varchar (1000),--Regular expression@replace varchar (1000),--Replacement value@globalreplace bit = 0,--whether it is a
Let's take a look at the detailed parameters of Replace
DescribeReturns a string in which a specified number of substrings are replaced with another substring.GrammarReplace (expression, find, replacewith[, compare[, count[, start]])
The syntax
Basic syntax for Oracle stored procedures
1. Basic structureCREATE OR REPLACE PROCEDURE Stored procedure name(Parameter 1 in number,Parameter 2 in number) isVariable 1 INTEGER: = 0;Variable 2 DATE;BEGIN
End Stored Procedure name
2.SELECT into
I. What are stored procedures and functions1. is a named PL/SQL block2. Called PL/SQL sub-Program3. Similar to anonymous blocks, there is a block structure:The Declarations section is optional (no declare keyword)Must have an Executive
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