10 recommended articles for information about tables
黄舟
Release： 2017-06-14 10:38:33
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MySQL Metadata You may want to know the following three types of information about MySQL: Query result information: The number of records affected by the SELECT, UPDATE or DELETE statement. Database and data table information: Contains structural information of the database and data table. MySQL server information: Contains the current status, version number, etc. of the database server. In the MySQL command prompt, we can easily obtain the above server information. But if you use a scripting language such as Perl or PHP, you need to call a specific interface function to obtain it. We will introduce it in detail next. Get the number of records affected by the query statement. PERL instance In the DBI script, the number of records affected by the statement is returned through the function do() or execute(): # Method 1
# Use do() to execute $query
my $count = $dbh->do&nbs
# Introduction: MySQL metadata You may want to know the following three types of MySQL Information: Query result information: Number of records affected by SELECT, UPDATE or DELETE statements. Database and data table information: Contains structural information of the database and data table. ...
2. php mysql three methods to obtain table field names and field information
Introduction: Three methods for php mysql to obtain table field names and field information. First, the information of the table used in this example is given: Use desc to obtain table field information. The php code is as follows: <?php mysql_connect("localhost","root",""); mysql_select_db("test"); $query = "desc student"; $result = mysql_query($query
3. MySQL Getting Started Tutorial 6 - Obtaining Database and Table Information
##Introduction: What if you forget the name of the database or table, or what the structure of a given table is (for example, what its columns are called)? MySQL provides information about the database and its supported tables through a few statements. Solve this problem. You have seen SHOW...
##4.
mysql Get database and table information
##Introduction: What if you forget the name of your database or table, or what the structure of a given table is (for example, what its columns are called)? Solve this problem with a few statements that provide information about the database and its supporting tables. You have seen SHOW DATABASES, which lists the databases managed by the server. MySQL correlation query problem?
Introduction: There are currently three tables: A B C The relationship between A and B, A.uid = B.id The relationship between B and C, B.uid = C.id Now when I want to directly query table A through a MySQL statement, I can find out the information of table C through table B, such as left join, etc., please give me a demonstration sql statement... .
#6. php+mysql object-oriented simple query table information
Introduction: php+mysql object-oriented Simple query table information
7. Come in and help, database query related issues
Introduction: Dear experts Let's come in and help. The database query problem has a table that stores customer information. We have set a specific order for these places. According to these orders, the information in this table is listed, such as: Xiao Li Shanghai Xiao Zhang Shaanxi Xi'an Xiao Yang Wuhan Hongshan District Xiaohuang Beijing
Introduction: How to use php to export the queried files How about exporting the file into an excel table? If you use the database language to export, it can only be the information of the entire table, and there is no header. How can you print out the header? ------Solution------------- -------
Set the content to a standard
, and set the file header to application/vnd.ms-excel. If you need to download, set it like this: Header(
##9. The 12th version of the open source forum system YouYaX has been released
##Introduction: The 12th version of the open source forum system YouYaX has been released La~ The main contents of this update are:
1. Add CommonAction.php public controller file
2. When quoting other people’s published information, the cited person will receive a message notification
3. As described in 1, move duplicate code in other controllers to a common controller
Why can't we add functions to the public file common.php instead of creating a public controller?
It's because common.
10.
php+mysql object-oriented easy query table information
Introduction: php+mysql object-oriented simple query table information. I am a novice self-study ~ looking for simple and easy-to-understand code. If you are not busy, please help me take a look at this code I wrote. The webpage is blank. At the end of writing, I feel that I am still facing the process. What's going on~~~Please give me some advice~~------Solution ideas-- --------------------In fact, when you don't know how to write code, you can refer to other people's thoughts on writing code, and then transform it into your own things and apply what you have learned. http:/
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##Introduction: What if you forget the name of your database or table, or what the structure of a given table is (for example, what its columns are called)? Solve this problem with a few statements that provide information about the database and its supporting tables. You have seen SHOW DATABASES, which lists the databases managed by the server. 
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