sphinx matches the specified field

In order to relieve the query pressure of the database, the data of the specified table is made into a sphinx index. Since the value of the field to be queried and other field values ​​will be repeated, then I love programming to introduce the method of sphinx accurate query., friends in need can refer to:

1. Requirements:
There is a table in the database with 2 million pieces of data. Every time the spider crawls, the load of the database will be very high. Sphinx is often used for searching, and what I need to do isIt is necessary to accurately match the specified content, that is, to transfer the operation of querying the database to the use of sphinx.

Because the values ​​of the ID and url fields of the data table will be repeated, we need to specify the fields here to achieve accurate query and display results.

2. Solution:
(1), Set the search mode:

$sphinx->SetMatchMode(SPH_MATCH_EXTENDED2);

 (2), set the specified search field:

$res_index = $sphinx->Query('@url' . $url, 'itbiancheng'); //itbiancheng is my index, here you need to replace it with your own according to the actual situation

3. Verification result:

[total] => 1[total_found] => 1[time] => 0.000[words] => Array([42891] => Array([docs] => 2[hits] => 2))

Although there are two hits shown here, according to the conditions we set above, only one will be displayed in the result

4. SetMatchMode optional matching mode:

Constant	Description
SPH_MATCH_ALL	Matches all query terms (default pattern).
SPH_MATCH_ANY	Matches any of the query terms.
SPH_MATCH_PHRASE	Consider the entire query as a phrase, requiring complete matches in order.
SPH_MATCH_BOOLEAN	Consider the query as a boolean expression.
SPH_MATCH_EXTENDED	Consider the query as an expression in Sphinx's internal query language.
SPH_MATCH_FULLSCAN	Use full scan, ignoring query terms.
SPH_MATCH_EXTENDED2	Similar to SPH_MATCH_EXTENDED and supports scoring and weighting, the extended match mode allows the use of some conditional statements like mysql