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The order BY statement is used to sort the result set based on the specified columns. The order BY statement sorts the records by default in ascending sequence. If you want to sort records in descending order, you can use the DESC keyword.

Sqldelete statement and multitable data deletion method delete & nbsp; [from] & nbsp; & nbsp; {table_namewith (& lt; table_hint_limited & gt ;[... n]) & nbsp; & SQL delete statement and how to delete multiple table data simultaneously Delete [From] {

SQL Date Subtraction DateDiff () returning two date days Definitions and usageThe DATEDIFF () function returns the number of days between two dates. GrammarThe DATEDIFF (date1,date2) date1 and Date2 parameters are valid date or date/time

The simple use of Date and Time Processing Package Carbon in Laravel, laravelcarbon Preface We often need to process the date and time when writing PHP applications. This article will show you how to extend the Carbon-inherited API extensions from

The SQL date minus DATEDIFF () returns the number of days between two dates. The definition and usage of the DATEDIFF () function returns the number of days between two dates. The syntax DATEDIFF (date1, date2) date1 and date2 are valid date and

SQL DELETE statement and simultaneous deletion of multi-table data implementation methodDelete[From]{table_name with ( [... n])| View_name| rowset_function_limited} [From {} [,... N]] [Where{| {[Current OF{{[Global] cursor_name}|

With the rise of AJAX and microformats, are these formats still usable? Or is the micro-style "light" enough? See how to use MochiKit for AJAX (without X) in JSON (more lightweight than YAML) and how to use reStructured Text in microfile generation

UPDATE statement. The UPDATE statement specifies the following information: this is the name of the changed table. A record is changed in one place, a list of column names, and a new content value is given to them. Based on the specified conditions,

The data in the updated table of the UPDATE statement. 　　The following information is specified in the UPDATE statement: 　　This is changing the table name, a local record is changed, a list of column names, giving them new content values, depending

Distinct this keyword to filter out the extra duplicate records only one, but often use it only to return the number of records not duplicates, rather than using it to return all the values not to be recorded. The reason is that distinct only use