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thinkphp exp usage

Jun 25, 2019 am 10:13 AM
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thinkphp exp usage

I encountered a problem today, which is to query the data of vendor_id = vendor_f_id in the vendor table. In fact, it is very simple to use the native sql statement:

select * from  vendor where vendor_id = vendor_f_id

But , in thinkphp, for the simplicity and versatility of the code, we do not consider using the native way to query sql, but use the query map method to query

$condition[ 'vendor_f_id' ] = 'vendor_id';

However, when thinkphp handles the above conditions, it will It is converted into the following code:

select * from vendor where vendor_f_id = 'vendor_id'

In other words, vendor_id is treated as a string

The solution to the above problem is:

$condition[ 'vendor_f_id' ] = [ 'exp' , ' = vendor_id ' ]

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