MySQL.MATCH() AGAINST()全文本搜索

SELECT note_text
    -> FROM productnotes
    -> WHERE Match(note_text) Against(‘rabbit‘);
+----------------------------------------------------------------------------------------------------------------------+
| note_text                                                                                                            |
+----------------------------------------------------------------------------------------------------------------------+
| Customer complaint: rabbit has been able to detect trap, food apparently less effective now.                         |
| Quantity varies, sold by the sack load.
All guaranteed to be bright and orange, and suitable for use as rabbit bait. |
+----------------------------------------------------------------------------------------------------------------------+
SELECT note_text
    -> FROM productnotes
    -> WHERE note_text LIKE ‘%rabbit%‘;
+----------------------------------------------------------------------------------------------------------------------+
| note_text                                                                                                            |
+----------------------------------------------------------------------------------------------------------------------+
| Quantity varies, sold by the sack load.
All guaranteed to be bright and orange, and suitable for use as rabbit bait. |
| Customer complaint: rabbit has been able to detect trap, food apparently less effective now.                         |
+----------------------------------------------------------------------------------------------------------------------+

SELECT note_text, Match(note_text) Against(‘rabbit‘) AS rank
    -> FROM productnotes;
+-----------------------------------------------------------------------------------------------------------------------------------------------------------+--------------------+
| note_text                                                                                                                                                 | rank               |
+-----------------------------------------------------------------------------------------------------------------------------------------------------------+--------------------+
| Customer complaint:
Sticks not individually wrapped, too easy to mistakenly detonate all at once.
Recommend individual wrapping.                          |                  0 |
| Can shipped full, refills not available.
Need to order new can if refill needed.                                                                          |                  0 |
| Safe is combination locked, combination not provided with safe.
This is rarely a problem as safes are typically blown up or dropped by customers.         |                  0 |
| Quantity varies, sold by the sack load.
All guaranteed to be bright and orange, and suitable for use as rabbit bait.                                      | 1.5905543565750122 |
| Included fuses are short and have been known to detonate too quickly for some customers.
Longer fuses are available (item FU1) and should be recommended. |                  0 |
| Matches not included, recommend purchase of matches or detonator (item DTNTR).                                                                            |                  0 |
| Please note that no returns will be accepted if safe opened using explosives.                                                                             |                  0 |
| Multiple customer returns, anvils failing to drop fast enough or falling backwards on purchaser. Recommend that customer considers using heavier anvils.  |                  0 |
| Item is extremely heavy. Designed for dropping, not recommended for use with slings, ropes, pulleys, or tightropes.                                       |                  0 |
| Customer complaint: rabbit has been able to detect trap, food apparently less effective now.                                                              | 1.6408053636550903 |
| Shipped unassembled, requires common tools (including oversized hammer).                                                                                  |                  0 |
| Customer complaint:
Circular hole in safe floor can apparently be easily cut with handsaw.                                                                |                  0 |
| Customer complaint:
Not heavy enough to generate flying stars around head of victim. If being purchased for dropping, recommend ANV02 or ANV03 instead.   |                  0 |
| Call from individual trapped in safe plummeting to the ground, suggests an escape hatch be added.
Comment forwarded to vendor.                            |                  0 |
+-----------------------------------------------------------------------------------------------------------------------------------------------------------+--------------------+

SELECT note_text
    -> FROM productnotes
    -> WHERE MATCH(note_text) Against(‘anvils‘);
+----------------------------------------------------------------------------------------------------------------------------------------------------------+
| note_text                                                                                                                                                |
+----------------------------------------------------------------------------------------------------------------------------------------------------------+
| Multiple customer returns, anvils failing to drop fast enough or falling backwards on purchaser. Recommend that customer considers using heavier anvils. |
+----------------------------------------------------------------------------------------------------------------------------------------------------------+

SELECT note_text
    -> FROM productnotes
    -> WHERE MATCH(note_text) AGAINST(‘anvils‘ WITH QUERY EXPANSION);
+----------------------------------------------------------------------------------------------------------------------------------------------------------+
| note_text                                                                                                                                                |
+----------------------------------------------------------------------------------------------------------------------------------------------------------+
| Multiple customer returns, anvils failing to drop fast enough or falling backwards on purchaser. Recommend that customer considers using heavier anvils. |
| Customer complaint:
Sticks not individually wrapped, too easy to mistakenly detonate all at once.
Recommend individual wrapping.                         |
| Customer complaint:
Not heavy enough to generate flying stars around head of victim. If being purchased for dropping, recommend ANV02 or ANV03 instead.  |
| Please note that no returns will be accepted if safe opened using explosives.                                                                            |
| Customer complaint: rabbit has been able to detect trap, food apparently less effective now.                                                             |
| Customer complaint:
Circular hole in safe floor can apparently be easily cut with handsaw.                                                               |
| Matches not included, recommend purchase of matches or detonator (item DTNTR).                                                                           |
+----------------------------------------------------------------------------------------------------------------------------------------------------------+

SELECT note_text
    -> FROM productnotes
    -> WHERE MATCH(note_text) AGAINST(‘heavy‘ IN BOOLEAN MODE);
+---------------------------------------------------------------------------------------------------------------------------------------------------------+
| note_text                                                                                                                                               |
+---------------------------------------------------------------------------------------------------------------------------------------------------------+
| Item is extremely heavy. Designed for dropping, not recommended for use with slings, ropes, pulleys, or tightropes.                                     |
| Customer complaint:
Not heavy enough to generate flying stars around head of victim. If being purchased for dropping, recommend ANV02 or ANV03 instead. |
+---------------------------------------------------------------------------------------------------------------------------------------------------------+

SELECT note_text FROM productnotes WHERE MATCH(note_text) AGAINST(‘heavy -rope*‘ IN BOOLEAN MODE);
+---------------------------------------------------------------------------------------------------------------------------------------------------------+
| note_text                                                                                                                                               |
+---------------------------------------------------------------------------------------------------------------------------------------------------------+
| Customer complaint:
Not heavy enough to generate flying stars around head of victim. If being purchased for dropping, recommend ANV02 or ANV03 instead. |
+---------------------------------------------------------------------------------------------------------------------------------------------------------+

SELECT note_text
    -> FROM productnotes
    -> WHERE MATCH(note_text) AGAINST(‘+rabbit +bait‘ IN BOOLEAN MODE);
+----------------------------------------------------------------------------------------------------------------------+
| note_text                                                                                                            |
+----------------------------------------------------------------------------------------------------------------------+
| Quantity varies, sold by the sack load.
All guaranteed to be bright and orange, and suitable for use as rabbit bait. |
+----------------------------------------------------------------------------------------------------------------------+

SELECT note_text FROM productnotes WHERE MATCH(note_text) AGAINST(‘rabbit bait‘ IN BOOLEAN MODE);
+----------------------------------------------------------------------------------------------------------------------+
| note_text                                                                                                            |
+----------------------------------------------------------------------------------------------------------------------+
| Quantity varies, sold by the sack load.
All guaranteed to be bright and orange, and suitable for use as rabbit bait. |
| Customer complaint: rabbit has been able to detect trap, food apparently less effective now.                         |
+----------------------------------------------------------------------------------------------------------------------+

-- 匹配短语rabbit bait而不是匹配两个词rabbit和bait
SELECT note_text FROM productnotes WHERE MATCH(note_text) AGAINST(‘"rabbit bait"‘ IN BOOLEAN MODE);
+----------------------------------------------------------------------------------------------------------------------+
| note_text                                                                                                            |
+----------------------------------------------------------------------------------------------------------------------+
| Quantity varies, sold by the sack load.
All guaranteed to be bright and orange, and suitable for use as rabbit bait. |
+----------------------------------------------------------------------------------------------------------------------+

-- 增加前者的等级，降低后者的等级
SELECT note_text FROM productnotes WHERE MATCH(note_text) AGAINST(‘>rabbit <bait‘ IN BOOLEAN MODE);
+----------------------------------------------------------------------------------------------------------------------+
| note_text                                                                                                            |
+----------------------------------------------------------------------------------------------------------------------+
| Quantity varies, sold by the sack load.
All guaranteed to be bright and orange, and suitable for use as rabbit bait. |
| Customer complaint: rabbit has been able to detect trap, food apparently less effective now.                         |
+----------------------------------------------------------------------------------------------------------------------+

-- 降低后者的等级
SELECT note_text FROM productnotes WHERE MATCH(note_text) AGAINST(‘+safe +(<combination)‘ IN BOOLEAN MODE);
+---------------------------------------------------------------------------------------------------------------------------------------------------+
| note_text                                                                                                                                         |
+---------------------------------------------------------------------------------------------------------------------------------------------------+
| Safe is combination locked, combination not provided with safe.
This is rarely a problem as safes are typically blown up or dropped by customers. |
+---------------------------------------------------------------------------------------------------------------------------------------------------+

时间： 2025-01-26 20:22:19

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