ft_boolean_syntax + -><()~*:""&| #改变IN BOOLEAN MODE的查询字符,不用重新启动MySQL也不用重建索引 ft_min_word_len 4 #最短的索引字符串,默认值为4,(通常改为1)修改后必须重建索引文件 重新建立索引命令:repair table tablename quick ft_max_word_len 84 #最长的索引字符串,默认值为84,修改后必...
using config file 'etc\csft_mysql.conf'... indexing index 'weibo'... collected 8 docs, 0.0 MB sorted 0.0 Mhits, 100.0%done total 8 docs, 1381 bytes total 0.188 sec, 7319bytes/sec, 42.40 docs/sec total 2 reads, 0.000 sec,1.2 kb/call avg, 0.0 msec/call avg total 7 writes, 0.000...
The MySQL feature for finding words, phrases, Boolean combinations of words, and so on within table data, in a faster, more convenient, and more flexible way than using the SQL LIKE operator or writing your own application-level search algorithm. It uses the SQL function MATCH() and FULLTEX...
First it automatically does sorting by relevance unless you’re doing BOOLEAN search so you better just remove order by from this query. Second – are you sure you do not want to use LIMIT ? Getting all matches will be very slow for large data sets. 0 Reply ...
BLOB BIT OPAQUE DATETIME TIME DATE BOOLEAN ARRAY OBJECT STRING INTEGER, DOUBLE NULL For JSON values of the same precedence, the comparison rules are type specific: BLOB The first N bytes of the two values are compared, where N is the number of bytes in the shorter value. If the first...
• BOOL,BOOLEAN:布尔型,是TINYINT(1)的同义词。zero值被视为假, 非zero值视为真 2、浮点型(float和double),近似值• float(m,d) 单精度浮点型 8位精度(4字节) m总个数,d小数位.• double(m,d) 双精度浮点型16位精度(8字节) m总个数,d小数位. • 设一个字段定义为float(6,3),如果...
The boolean full-text search capability supports the following operators: + A leading plus sign indicates that this word must be present in every row returned. - A leading minus sign indicates that this word must not be present in any row returned. By default (when neither plus nor minus...
When you say "binary" values, I think you are referring to a set of boolean flags? (not quite the same thing). In the case of bitwise operators, there are times when you can transform the equation to isolate the field on one side of an equation, in which case you can use an ...
11.9.2. Boolean Full-Text Searches 11.9.3. Full-Text Searches with Query Expansion 11.9.4. Full-Text Stopwords 11.9.5. Full-Text Restrictions 11.9.6. Fine-Tuning MySQL Full-Text Search 11.9.7. Adding a Collation for Full-Text Indexing 11.10. Cast Functions and Operators 11.11. XML Functions...
12.9.2 Boolean Full-Text Searches 12.9.3 Full-Text Searches with Query Expansion 12.9.4 Full-Text Stopwords 12.9.5 Full-Text Restrictions 12.9.6 Fine-Tuning MySQL Full-Text Search 12.9.7 Adding a User-Defined Collation for Full-Text Indexing 12.9.8 ngram Full-Text Parser 12.9.9 MeCab Full...