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Oracle uses a cursor to delete all record scripts in all user data tables Application Scenario: because the data in the Oracle database involves confidential information, we hope to delete all the data at a time and only keep the data table structure for the development of new projects. Test Result: All data has been d

For example: We import a customer's information, we know that the customer's name is Zhangshan, we want to know, in our business database (Eg:northwind), which of the data tables which fields set the name value Zhangshan, through the following SQL, This is what we can do, where the SQL search has been locally modified from the Web. One, the search data is a string type Applicable to search Text,ntext,varchar,nvarchar,char,nchar and other types 1. Create the stored procedure: my_search_stringingi

Label:Application scenario: Because the data in the database involves confidential information, I hope to delete all the data at once, and keep the data table structure for the new project development program.Test Result: All data is deleted after queryThere is a problem: data table If there is a foreign key, the following script may be unsuccessful, please delete or filter out the table yourself, seeHow to

Label:GRANT All Privileges1. Change the table method. It may be that your account is not allowed to log on remotely, only on localhost. This time, as long as the computer on the localhost, log in to MySQL, change the "MySQL" Database in the "User" table "host", from "localhost" to "%"1. mysql-u root-pvmwaremysql>use MySQL;2. Mysql>update User Set host = '% ' where user = ' root ';3. Mysql>select host, user from user; 2. Authorization law. For example,

In programming or building, you may encounter situations where it is often necessary to read all of its superiors or all subordinates based on a node of the tree type. It is then bound to the tree-shaped part display.In Oracle, you can use start with ... connect by prior ... To achieve.The specific wording is:Query Subordinates:Select * from with dept_id=2170 by prior dept_id=order by Sort_ ORDERQuery Sub

hold the power button while pressing the "Feed (Restore)" button 5 times, then release all the buttons.  Advanced: Press and hold the power button while pressing the "Feed (Restore)" button 12 times, then release all the buttons at the same time. HP Deskjet 710, 720 inkjet printer 　　Here's how it works: • Print Offline test page 1. Turn on the printer powe

Replace some content of all fields in all tables in the SQLServer database with the table field content declare @ tvarchar (255), @ cvarchar (255) values, B. namefromsysobjectsa, syscolumnsb, policypescwherea. uandc Replace some content of all fields in all tables in the SQL Server database with declare @ t varchar (25

All records of Jquery selection and invert selection problems. All records of jquery Selection Jquery code is implemented in this way :( refer to a great god EdieLei reply blog link http://www.cnblogs.com/edielei) I personally think this method is better than each, so I will record it: Var a = true; $ (function () {// select all/do not select

JQuery + php implements the all-selected deletion method, and jqueryphp Selects all The example in this article describes how jQuery + php simply implements all-selected deletion. We will share this with you for your reference. The details are as follows: Select all checkpoints. The identifier is the delete item, and

In linux, view all users and all user groups (including how to add) groups, view the group members of the currently logged-on users, groups gliethttp, and view the group of gliethttp users, view the current username/etc/group in the whoami group. The file contains all usernames in the/etc/shadow and/etc/passwd systems. 1./etc/group explanation; the/etc/group file

A checkbox is a control that we inevitably use in system development. The usual usage is to select multiple checkboxes, choose All, or cancel all. The use of the checkbox has just been encountered in the previous period. Take a few days to summarize briefly and hopefully give a little help to friends who want to use the CheckBox control.Sometimes we have to click on a CheckBox control, when it is selected,

Select none for all JS checkbox and all for jscheckbox /* JS checkbox: Select all and no JS for CheckBox First, replace the original code with all the following code:> Check whether all or not to select a checkbox The figure is not clear, but the general principle is as fo

This article introduces how to obtain the names of all tables in a database and the names of all fields in a table. For more information, see. This article introduces how to obtain the names of all tables in a database and the names of all fields in a table. For more information, see. 1.

Ultraviolet-10340-All in All (string processing !) Link: All in All Problem E All in All Input:Standard input Output:Standard output Time Limit:2 seconds Memory Limit:32 MB You have devised a new encryption technique which enco

Trim is the removal of whitespace characters or other predefined characters on either side of a string. If you specify a 2nd parameter (the symbol you want to remove), can you remove more than one? But now it is not sure what kind of symbol will be entered, such as question mark, dot, comma, exclamation mark, it is impossible to all the symbols to play it again? So what function can I handle all the symbols

Unity3d interview questions (all), unity3d interview questions (all) I have summarized some Unity3d high-frequency interview questions, hoping to help you. Limited to individual levels, only some reference answers are attached. ======================================================== Data structures and algorithms are important, and graphics are also important! Large gaming companies value personal foundati

From http://hi.baidu.com/yocnnzrmilceijr/item/d1d928f8e8cc73ea1b111f07 Delete all tables: If table deletion fails due to foreign key constraints, delete all constraints first: --/Step 2 *********** Delete the foreign key constraints of all tables ******************* ******/ Declare C1 cursorSelect 'alter table ['+ object_name (parent_obj) +'] Drop constra

Note: If you want to delete all the sessions on the server, restarting the PHP service will not solve the problem, the PHP session is persistent.Effective Solutions:Delete all files under/tmp (the default PHP session file is stored in/tmp, direct this directory, if you have changed the directory of the PHP session into the corresponding directory delete)After deleting the website will be an error! Visit the