mysql stored procedures and functions
Abstract: Stored procedures and functions are sets of SQL statements defined in the database, and then directly call these stored procedures and functions to execute the defined SQL statements. Stored procedures and functions can avoid developers repeating the same SQL statements. Moreover, stored procedures and functions are stored and execute ...
Posted by stephanie on Thu, 11 Jul 2019 01:28:00 +0200
MYSQL Tuning 1 - Discover Slow Queries
Discover slow queries
How to quickly locate and execute slow sentences from a large project is a problem to be solved in this chapter.
1. Definition of slow query
What kind of query is slow query, is there a quantitative standard?
Slow Query Definition
Slow query refers to sql statements whose execution time exceeds that of slow query.
Ways ...
Posted by Ricklord on Wed, 10 Jul 2019 23:44:09 +0200
T-SQL Realizes the Computation of the Most Steady Scheme of the Success, Balance and Loss Combination of the Football Game
Standard Origin: http://www.cnblogs.com/wy123/p/6970721.html
Disclaimer:This article is only for entertainment, from the point of view of winning or losing the lottery, to analyze how to invest to achieve the "most secure" income, ^ O^This article does not have any guidance or responsibility for any actual investment portfolio.
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Posted by paul.mac on Mon, 24 Jun 2019 02:55:11 +0200
MySQL Optimized Notes (6) - Stored Procedures and Stored Functions
When a large system is set up, it will be found that many SQL operations overlap, and individual calculations are the same, for example, in a business system, how a single sheet is calculated.When these situations arise, using stored procedures is a great optimization.
This series: demo download
(1) MySQL Optimized Notes (1) - Basic op ...
Posted by tili on Sun, 16 Jun 2019 19:23:17 +0200
Analysis of SQL in a hang database
Someone at the interface came to me and said that there was a stored procedure that couldn't run and tried to report errors several times.
ORA-12801: Error signal in parallel query server p001, instance xx
ORA-04030: Insufficient process memory when attempting to allocate 16328 bytes (xxxx)
It also monitors the receipt of spatially increasi ...
Posted by mxdan on Sun, 19 May 2019 22:34:38 +0200
oracle storage functions and stored procedures
stored procedureConcept: Stored Procedure s are large database system In order to accomplish specific functions, a set of SQL statements is stored in the database. After the first compilation, the first call does not need to be compiled again. The user executes it by specifying the name of the stored procedure and giving param ...
Posted by mdemetri2 on Sun, 12 May 2019 06:12:47 +0200