sentence combiner

side of the response to the SQL execution efficiency, Table is the table that the data for this row is about. Type this column of const performance Best Performance worst is all The const description is a constant lookup, usually the primary key. A unique index to find, Eq-reg is a range of lookups, usually a unique index. The range lookup for the primary key, Ref is more common in connected queries, where a table is based on a lookup of an index, Range is the scope lookup for the index, Inde

(' name1 ', ' title1 ', '". $time. "'),"; $sql. = "(' name2 ', ' title2 ', ' ". $time." '), "; $sql. =" (' Name3 ', ' title3 ', ' ". $time." '), "; $sql. =" (' Namen ', ' titlen ', ' ". $time." ') "; By separating multiple data with the "," number, you can pass an SQL operation to solve multiple data insertions, and in the previous experiment, when the number of inserted data bars was 30, one insertion was nearly 9 times times faster than inserting the same data multiple times. At the same time

existing data is invalid, existing data self-growth has not been resolvedALTER table name change primary key column ID INT auto_increment;10: Data encryptionA) Password functionsuch as: INSERT into User_login (User_name,user_password) VALUES (' Shark ', password (' qweasdzxc '));The saved data is: Shark, *e9d8702e5ce97f00a17a75241c04a013b407a1a6In particular, it is necessary to ensure the effective size of the encrypted field length, I here 9 characters 30 bit is not enough, I directly increase

DECLARE @t varchar(255),@c varchar(255)DeclareTable_cursorcursor for SelectA.name,b.name fromsysobjects a,syscolumns b, systypes cwherea.ID=b.ID andA.xtype='u' andC.name/*"U" is the type of data you want to manipulate, do not change to all data types, don't want to bother to change*/inch('Char','nchar','nvarchar','varchar','text','ntext' /*--here if your text (ntext) type does not have more than 8000 (4000) length, you can use*/)Declare @str varchar( -),@str2 varchar( -) Set @str='' /*here is

-branch computer Administrator B Corner/Wei Hong/Anti-money Laundering 303/Credit Synthesis 303/organizations/Xu Yue Kun/Chen Yu/WAN Xia/single loan 303/garden Road Sub-branch asset manager/Choshi/Chengyao/Garden Road Planning Contact/7 West Third Ring sub-branch computer Administrator B Corner/West Third ring sub-branch computer administrator a corner/Zhang Yongfing/Anti-money laundering 304/Credit Synthesis 304/Dengli/each credit 304/Zhang Jihong/Shing/Li Dongdong (304)/Mugongjixiean/West Thir

The purpose of learning plsql statements;Let the original code in the application's judgment result, write the SQL statement, thus improve the speed of the application;It is necessary to learn plsql before stored procedures and stored functions and triggers.Improve the speed of operation Oracle and prepare for the following;Basic syntax:DeclareDescription section (variable description, cursor declaration, exception description)BeginStatement sequence (DML statement)exceptionException Handling St

Tags: http color os data ar div line databaseThe data in the database is this:The filtered data is this:How to use a sentence of SQL, the data from the database to filter out the results of the implementation?Solve:select系统名称,sum(casewhen故障状态=‘已处理‘then 1else0end)as已处理个数,sum(casewhen故障状态=‘未处理‘then1else0end)as未处理个数,count(*)as总个数from表名groupby系统名称Links: http://zhidao.baidu.com/link?url=UyNCB4lHhQ9xCy-QInSyVRGHoWKxWy1h6GP8g688OFy8099Bz9XcrbEf_xIjz4V2_kc4XZ

/*013-sentence Reverse order topic Description An English sentence is emitted in reverse sequence in words. For example "I am a boy", in reverse order after the "Boy a AM I" all the words are separated by a space, the statement in addition to the English letter, no longer contain other characters interface Description/** * Inverted sentence * * @param

Applicable environment of one-sentence Trojan: 1. the Guest account on the server has the write permission 2. The database address is known and the database format is asa or asp 3. If the database format is not asp or asa, you can insert a sentence to the asp file. Principle of one-sentence Trojan: "One-sentence Trojan

1. Sentence Pattern: we seem to have encountered some situations. Tip: deliver bad messages in the most graceful way. If you immediately rush to your boss's office to report the bad news, even if you don't do it, it will only let your boss question your ability to handle the crisis. At this time, you should say this sentence without a fluctuating tone, so that your boss may feel that the problem is not

Classical Sentence Pattern of English Writing) I,~~~ The ~ Est (that) Subject word have ever seen (known/heard/had/read, etc) ~~~ The most adjective noun (that) Main word have ever seen (known/heard/had/read, etc) Example: Helen is the most beautiful girl that I have ever seen.Helen is the most beautiful girl I have ever seen. Mr. Chang is the kindest teacher that I have ever had.Teacher Zhang is the kind teacher I have ever met. 　　 2. Nothing is ~~~

Title: Enter an English sentence, flipping the order of the words in the sentence, but the order of the characters within the word is unchanged. Words are separated by spaces in sentences. For simplicity, punctuation is treated like ordinary letters.For example, enter "I am a student.", then output "student." A am I ".Analysis: Because writing string-related code can reflect the programmer's programming abi

Yesterday, the knife threw a problem in the group, saying that there was always an error when a sentence was inserted in the background. The friends in the group made a lot of ideas, but they still did not solve the problem. Later, this kid threw the question to me and I tested it yesterday. Here we will introduce the situation to you.In general, insert a sentence in the background. If the database extensio

First, we will introduce various php labels: 1 ): Demo: Most programs use this label now! No stranger to everyone. We will not discuss it here! 2 ): This label is a common usage in the past. Most cms developed in older php versions use it, Most programmers are familiar with it! We call this label a phrase tag! 3 ): Demo: www.2cto.com This label is the focus of today and is mostly unfamiliar! In addition, programmers filter and insert a sen