The test table I set up is like this:
The code is as follows
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CREATE TABLE ' foo ' (' Key ' VARCHAR not NULL,' Time ' INT (one) is not NULL,PRIMARY key (' key ')) Engine=myisam DEFAULT Charset=utf8;
The anti-quote bit (') is located above the TAB key of the keyboard, to the left of the 1 key. Note the difference between the single quotation mark (') on the left side of the ENTER key.Plays the role of command substitution in Linux. Command
The anti-quote bit (') is located above the TAB key of the keyboard, to the left of the 1 key. Note the difference between the single quotation mark (') on the left side of the ENTER key.Plays the role of command substitution in Linux. Command
Anti-QuoteThe anti-quote bit (') is located above the TAB key of the keyboard, to the left of the 1 key. Note the difference between the single quotation mark (') on the left side of the ENTER key.Plays the role of command substitution in Linux.
For large systems, Oracle,sqlserver is undoubtedly the best choice to look at the growing number of small web sites, they do not have their own servers, just to buy other people's space and database, but this small database on the performance of
Http://blog.sina.com.cn/s/blog_4d12b0680100txle.html
When I published an article today, I found that my website failed to publish the article. Later I ruled out it one by one because I didn't translate the single quotes and it was wrong when
For beginners who don't have much coding experience, the correct use of PHP quotes is a headache, often resulting in errors in the program due to incorrect use of PHP quotes. Now let's give you a concrete introduction to the correct use of PHP
Oracle knowledge point section 2 (A string contains single quotes) 1. About a string containing single quotes, a string references a string. What if the string itself contains single quotes? It is expressed in two single quotes or starts with q or Q,
For beginners who don't have much coding experience,
first think about all the words in PHP (actually called symbols) there are several categories.
1.php,mysql two-side keywords and functions. For example Echo,print,mysql_connect and so on. These
In PHP, single and double quotes are not interoperable, the specific difference is as follows:
The fields inside the double quotes are interpreted by the compiler and then exported as HTML code.
' Single quotes inside without explanation, direct
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