storage devices definition

In order to enrich our framework, we need to introduce some useful tools for the framework, such as: Phpexcel, Phpmailer, Verification code class ....1. Manually create the directory extends under the root of the framework and create the tool and org directories in the directory, respectively, for the tools and third-party extension classes;Extends//third-party class library Directory Extends/ tool//Tools Extends/org//third-party extensions2. Define three constants in the framework portal fil

Strict mode (strict mode), all variable definitions need to use the var keyword. If you do not use strict mode, then when the JS program to an undefined variable to assign a value, the program will be in the JS global object to create a name and the same variable property, that is, create a new global variable. This practice will bring a lot of problems (for example, a number of JS program to produce global variable pollution, etc.), to the maintenance of the later bring no small trouble, so in

When I back up an oracle tableWhen you export a table with a clob type field: EXP-00003: A storage definition of segment (11,419) not foundOthers can be exported normally. Key tables are not exported. Problem description: When the remote server connects to another database server and wants to export data remotely, there are several tables with the error exp_00003, which are key tables. Later, I realized th

The following issues occurred when using the Oracle database for the first two days, using the DBA user to export table structures in the tool in PL/SQL, when exporting tables:A lot of table "error (EXP-00003) did not find the segment (0,0) storage Definition", the results, after finding relevant data, comparison table structure, and finally found that all reported this error table is empty table---the tabl

When exporting data for a oracle11.2.0.2 server, the "EXP-00003: storage definition for segment (0,0)" error was reported. The initial analysis is due to the fact that the data table is empty and the table causes the problem.An empty table cannot be exported when Oracle 11G is exported with exportThere is a new feature in 11GR2 that does not allocate segment when the table has no data to save spaceWorkaroun

variable definitions in the #储存过程DeclareVariable name type Optional type--It's like building a watch .Create procedurep ()begin DeclareAgeint default( -); Declare Number int default 1; SelectAge+ Number; End$/*mysql> CREATE Procedure P (), Begin, declare age int default (18); -Declare number int default 1; Select Age+number; End$query OK, 0 rows Affected (0.00 sec) mysql> Call p$+------------+| Age+number |+------------+| |+------------+1 Row in Set (0.00 sec) Query OK, 0 rows