procedures enhance the functionality and flexibility of the SQL language. Stored procedures can be written using flow 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
][email protected] - before INSERT or UPDATE or DELETE on @[email protected] for each ROW - DECLARE - JSON Clob; in BEGIN - IF INSERTING Then to JSON: ='@newjson@'; + Dbms_output.put_line ('The JSON string is insert:'|| JSON); - INSERT into ddllog values ('@TABLE_NAME@','Insert', json,sysdate); the End If; * $ IF DELETING ThenPanax Notoginseng JSON: ='@oldjson@'; - Dbms_output.put_line ('The JSON string is delete:'|| JSON); the INSERT into ddllog values ('@TABLE_NAME@','Delete', json,sysdat
Result set found by SQL :! When the result is queried, return to the memberid((img.ask.csdn.netupload201604111460334280_418554.jpg) table: t_bm_integral! The SQL statement in the first figure shows that a result set contains the memberid and integral fields. now we need to traverse and store in... mysql in this result set.
Result set found by SQL:Table: t_bm_integralThe SQL statement in the first figure shows that a result set contains the membe
Label:Ask your teacher a question, if you want to set up a table and insert data into a stored procedure, what should be done, if the table inserted into the data is not established before inserting data, the stored procedure will
A newly written SQL code is used in the stored procedure to split input strings and insert them into the table:
I don't know if the efficiency is high? (Please advise)
Declare @ SQL nvarchar (4000)Set @ SQL = Replace (@ Vote, '|', 'Union all select ')Set @ SQL = 'select' + @ SQLSet @ SQL = Replace (@ SQL, 'select', 'select' + cast (@ Topic_ID as nvarchar (20) +
This article does not place the stored procedure instance.This is the most time-consuming problem I have encountered in developing a stored procedure, and the stored procedure can run, but the result is not what you want,For a lon
Tags: bulk PHP Comment Prepare class creates mysq $$ com100 tables were created because of business needs, but the structure of these tables is the same, and as programmers, it is to solve this repetitive work. However, this kind of thing to write a PHP script alone is too much trouble, so I simply learned how to do it directly with the MySQL stored procedure:The first is to create the table: (Lpad (' @i ',
' exists 'EndElseBeginprint ' does not exist 'End-----------------Determine if the stored procedure name to be created existsif exists (SELECT * from dbo.sysobjects WHERE id = object_id (N ' [dbo].[ Stored procedure name] ') and OBJECTPROPERTY (ID, N ' isprocedure ') = 1)--Delete
Label:How SQL determines whether a function stored procedure exists(2010-12-03 10:08:57)reproduced
Below you introduce SQL under the use of a variety of resources to determine the existence of the code, the need for friends can refer to, I hope you learn SQL functions and databases can be helpful.Whether the library existsif exists (select * from Master.. sysdatabases whe
stored procedure when calling the procedure. This reduces the amount of data transmitted over the network. Security. Parameterized stored procedures can prevent SQL injection attacks and apply Grant, Deny, and Revoke permissions to stored procedures.
Simple syntax of the
2nd part Database SQL languagePreservation of important table information in database stored procedure and related suggestions1. Saving important table information in the stored procedureIn many stored procedures, it involves upda
tables, with object names storedSelect Count (*) as Qty from Msysobjects Where ((msysobjects.name) like ' table name ');
Copy Code code as follows:
Whether the library exists
if exists (select * from Master. sysdatabases where name=n ' library name ')
print ' exists '
Else
print ' NOT EXISTS '
---------------
--Determine if the table name you want to create exists
if exists (SELECT * fr
Label:Tools to use:
Sql server
Java
MyBatis
First step: Create a function to get the data in the XMLCREATE function create_table (@str XML) returns @tb table (SourceID varchar) asbegin INSERT INTO @tb SELECT v.value (' @sourceId [1] ', ' VARCHAR ') as SourceIDfrom @str. Nodes ('/ Rsssources/rsssource ') x (v) return endStep two: Create a table with a
--Query establishment time
--table
select * from sysobjects where id=object_id (N ' table name ') and xtype= ' U '
--table's structure
select * FROM syscolumns where id=object_id (n ' table name ')
--Stored procedure
select * from sysobjects where id=object_id (n
Tags: into drop roo root field first pre var keyBusiness needs, inserting data into a table in bulk, using stored procedures to insertFirst, to create a MySQL table, indicating that for Phone_number, three fields, id self-increment, number is the table to be inserted, is_used means that it is already used, the default
Label:Original: SQL Server uses RowNumber () built-in functions with the over keyword to implement a common paging stored procedure (support for single-or multiple-table node-search-Sets paging)SQL Server uses the RowNumber () built-in function with the over keyword to implement a common paging stored
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