Oracle lists all the table names. The column name takes one day. there may be better methods. test environment: oracle xe 11g 1 shows all table names: select table_name from user_tables; 2 shows all column names: select OWNER, TABLE_NAME, COLUMN_NAMEfrom all_tab_columns where table_name = atablename; Appendix: -- Example: create temporary table. http://stackoverf
The table name and schema name are the same:
The schema and table names are both Arwen.Schema Arwen contains a PKG package with the plus function. The result of adding two numbers is returned.Select Arwen. PKG. Plus (1, 2) from dual; -- no error occurred while executing this SQL statement. Result 3 is returned.However, an error occurs in a PL/SQL block.DeclareResult int;BeginSelect Arwen. PKG. Plus (1, 2) into result from dual;Dbms_output.put_line (re
Nginx prevents domain names from being maliciously pointed to, and nginx prevents domain names from pointing
Today, I encountered a situation where the domain name was maliciously pointed to. A junk domain name pointed to the server's ip address and was complained. I found it online. It turns out that nginx has a default empty Host Header problem. The virtual host in nginx's default configuration allows us
that the first one is counted from the left%: Indicates that the first one is counted from the right# #: Indicates the last one to be counted from the leftPercent: Indicates that the last one is counted from the rightIn other words, # always indicates that the left is counted, and% always represents the right.*: Indicates the content to be deleted, for # and # #的情况, it is located in the specified character (example of '/' and '. ') ) to the left, the table deletes the specified character and it
Label:By using SQL, you can specify aliases (alias) for column names and table names.SQL alias syntax for SQL alias tableSELECT column_name (s) from
table_name as
alias_name
SQL Alias syntax for columnsSELECT column_name as Alias_name from
table_name
Alias instance: Using Table name aliasesLet's say we have two tables: "Persons" and "Product_orders", respectively. We assign them the alias "P" and "Po", respectively.Now we want to list all order
1. My heart will go on-Celine Dion-theme song from the movie Titanic
Reason for recommendation: Repeat the voice of silon, and reproduce yesterday's love between Jack and Rose.
Movie Posters:
Movie plot: In April 15, 1912, the giant ship Titanic, carrying 1316 passengers and 891 crew members, collided with the iceberg and sank. This sea was considered one of the
Movie clips in Flash can be said to be the most use of a component, then for its as is also a lot.
Before I explain, I'd like to rewrite the rules for editing as as the last time the button was spoken, which is written on the film clip itself and on the timeline.
First, let's start with a simple little example. (
Click here to download the source file. )
Maybe you can make a motion animation of a small ball without as. But what if you were to use as
One, copy movie clips1. Method: Duplicatemovieclip (film real name, new real name, depth level)2. Explanation: The real name of the film is the object you want to copy , the new real name is the object you want to paste , the depth level is the pasted movie clip stacking order (top, bottom, etc.).3. For example: We first draw a movie clip, its instance name is se
Http://www.58player.com/blog-2327-952.htmlFilm Textures (movie Texture)Note: This is only a professional/advanced feature.DesktopA movie texture is an animated texture created from a video file. By placing a video file in the project's resources (Assets) folder, you can import the video so that it is used in exactly the same way you would use a normal texture.Video files are imported through Apple QuickTime
In java, the relationship between file names and class names has the following constraints:
The file name saved in Java must be consistent with the class name.
If there is only one class in the file, the file name must be consistent with the class name
A Java file can contain only one public object file containing more than one class,
The file name must be consistent with the public class name. If
Common array functions in php (5) (obtain the set of key names in the array) and array key namesArray_keys ($ arr, $ search_value, $ strict );
-- Obtains the set of key names in the array.
// The array to be retrieved in parameter 1; the default value of the key to be retrieved in parameter 2 is NULL; and the default value of parameter 3 is false if it is strictly compared (=. Parameter 3 is added in php5
function within the function to be investigated and input a parameter, arguments. callee.Copy codeThe Code is as follows:Function ee (){// ++Var fnname = getFnName (arguments. callee)// ++Alert (fnname)};Ee ();
Instance 3:
Copy codeThe Code is as follows:Function getFuncName (_ callee){Var _ text = _ callee. toString ();Var _ scriptArr = document. scripts;For (var I = 0; I {Var _ start = _ scriptArr [I]. text. indexOf (_ text );If (_ start! =-1){If (/^ function \ s * \ (. * \). * \ r \ n/. test
Php obtains the summary of root domain names, and php obtains the summary of domain names.
The examples in this article summarize how php obtains the root domain name and share it with you for your reference. The specific implementation method is as follows:
If you only get the domain name currently accessing your page, you only need to use the HTTP_HOST function in php. If you want to extract the url root
to avoid the use of reserved words", because the existence of illegal identities should not be facilitated:
First of all, there is a technology-independent aspect: At some point, "actually use the reserved word" will become gossip, right? I've seen a lot of this kind of situation. Since we all know not to use reserved words, why bother?
DBAs or other people who are accustomed to command line, write large amounts of SQL, and occasionally have to pay attention to the field escape, very a
inti,j; - for(i=0; i)Wuyi { the for(j=0;j4; j + +) - { Wu if(s[i].score[j] -) - { Aboutprintf"\n%s failed:", s[i].name); $printf"\nscores:"); - for(j=0;j4; j + +) -printf"%d\t", S[i].score[j]); - Break; A } + } the } -}struct type and Int,char, array and other basic types, is also a C language data type, but this is a custom data type, we can be based on the requirements of various ba
One, configuring DNS and search DomainsSpecially configured DNS The file is/etc/resolv.conf, and we can ifcfg-eth0 the NIC configuration and other configuration files specified in the.Demo Sample:[Email protected] desktop]# cat/etc/resolv.confSearch example.comNameServer 192.168.0.254[Email protected] desktop]#Second, configure host name[Email protected] desktop]# cat/etc/sysconfig/networkNetworking=yesHostname=instructor.example.comNisdomain=notexample[Email protected] desktop]#Third, configure
2.1 obtain the names of all tables in the database.
Sample Data:
Statement:
Select T. Name 'table name' from sysobjects t where objectproperty (T. ID,N 'isusertable') = 1
Or use select name from sysobjects where type = 'U'
Execution result:
2.2 obtain the names of all fields in all tables
Statement:
Select distinct C. Name 'field name'From sysobjectsT, syscolumns CWhere T. ID = C. IDAndObjectproperty (T. I
addition, someone may be looking for a shared Application List. Let's talk about it here.
Obtain the code of the shared application:
/**
Because of this method, the returned packageinfo object is not. But resolveinfo. Therefore, the methods for obtaining images, application names, and package names are different:
Packagemanager pmanager = messagesendactivity. this. getpackagemanager ();
Summary:
How to
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