full-text-search

问题 I'm trying to run a very simple query on my MySQL INNODB table: SELECT * FROM items WHERE MATCH (item_title,item_description) AGAINST ('dog') Both column item_title and item_description have a FULLTEXT index. I keep getting this error: Can't find FULLTEXT index matching the column list My issue: when I query just item_title or just item_description then it works fine. But when I do both at once in 1 query, as shown above, I get that error. Any idea what is wrong? 回答1: You need a third index:

问题 I want to search for a word in documents I have stored in Elasticsearch 7.3 An example of what I would like on previous versions of Elasticsearch that worked is: { "query": { "bool": { "must": [ { "match": { "_all": "oliver" } } ], "must_not": [], "should": [] } }, "from": 0, "size": 10, "sort": [], "aggs": {} } But this query will not work on Elasticsearch 7+ because _all has been removed. How can I write the query to accomplish the same thing now that the _all field is gone? Note: I've read

问题 Given this code, I'm getting back no results: SELECT TOP 10 * FROM MyTable WHERE CONTAINS(TextColumn, '"W"') Things I've checked: Longer words return a result There are no stop LIST associated with this index There is definitely text such as "James W Brown" in the column The full text index is up to date. EDIT: I was looking for a stop lists, not a stop word, associated with the index. 回答1: The answer is to make sure you have an empty stop list associated with the index. It isn't enough to

问题 I'm using SQL Server 2014 Express, and have a full-text index setup on a table. The full-text index only indexes a single column, in this example named foo . The table has 3 rows in it. The values in the 3 rows, for that full-text indexed column are like so ... test 1 test 2 test 3 test 1 Each new line above is a new row in the table, and that text is literally what is in the full-text indexed column. So, using SQL Server's CONTAINS function, if I perform the following query, I get all rows

问题 I have the query: var query = DataContext.Fotos.Where(x => x.Pesquisa.Contais("myTerm") The SQL generated is: SELECT ... FROM Fotos AS [Extent1] WHERE [Extent1].[Pesquisa] LIKE N'%mytem%' But I need to use: SELECT ... FROM Fotos AS [Extent1] WHERE CONTAINS ([Extent1].[Pesquisa], 'my term') How to execute a full text search using entity framework 6? 回答1: Seems that Entity Framework 6 does not support full text search, but there is a workaround with interceptors. http://www.entityframework.info

问题 Is it possible to set ft_min_word_len for a certain user (such as by placing a my.cnf file in the user home dir with ft_min_word_len set)? The documentation says I need to restart the server after making this change, but a user does not have access to do that. 回答1: I'm working with this now, so to add as a reference for anyone looking at this... You can use this query in a query browser or the MySQL prompt to show the state of ft_min_word_len: "SHOW VARIABLES LIKE 'ft_min_word_len';" ft_min

问题 Is it possible to set ft_min_word_len for a certain user (such as by placing a my.cnf file in the user home dir with ft_min_word_len set)? The documentation says I need to restart the server after making this change, but a user does not have access to do that. 回答1: I'm working with this now, so to add as a reference for anyone looking at this... You can use this query in a query browser or the MySQL prompt to show the state of ft_min_word_len: "SHOW VARIABLES LIKE 'ft_min_word_len';" ft_min

问题 Is it possible to set ft_min_word_len for a certain user (such as by placing a my.cnf file in the user home dir with ft_min_word_len set)? The documentation says I need to restart the server after making this change, but a user does not have access to do that. 回答1: I'm working with this now, so to add as a reference for anyone looking at this... You can use this query in a query browser or the MySQL prompt to show the state of ft_min_word_len: "SHOW VARIABLES LIKE 'ft_min_word_len';" ft_min

问题 I have deployed an elastic search instance through AWS` managed ElasticSearch service (version 7.4.2) and having trouble getting "match" queries working. I am playing around with the sample flights dataset and running the following query: Data: [ { "FlightNum": "HX0WBLI", "DestCountry": "IT", "OriginWeather": "Damaging Wind", "OriginCityName": "Chitose / Tomakomai", "AvgTicketPrice": 988.8975638746068, "DistanceMiles": 5650.511340218511, "FlightDelay": false, "DestWeather": "Sunny", "Dest":

问题 Right now I have a products collection where I store my products as documents like the following: documentID: title: STRING, price: NUMBER, images: ARRAY OF OBJECTS, userImages: ARRAY OF OBJECTS, thumbnail: STRING, category: STRING NOTE: My web app has approximately 1000 products. I'm thinking about doing full text search on client side, while also saving on database reads, so I'm thinking about duplicating my data on Firestore and save a partial copy of all of my products into a single