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...
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...
BIT OPAQUE DATETIME TIME DATE BOOLEAN ARRAY OBJECT STRING INTEGER, DOUBLE NULL For JSON values of the same precedence, the comparisonrules 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 N...
search_modifier的可能取值有:IN NATURAL LANGUAGEMODE、IN NATURAL LANGUAGE MODE WITH QUERY EXPANSION、IN BOOLEAN MODE、WITH QUERY EXPANSION。search_modifier的每个取值代表一种类型的全文搜索,分别为自然语言全文搜索、带查询扩展的自然语言全文搜索、布尔全文搜索、查询扩展全文搜索(默认使用IN NATURAL LANGUAGE MODE)...
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 ...
• 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...
First, the connector was not properly informed by the TreatTinyAsBoolean property that it should treat type TINYINT(1) as INT or BOOL. In addition, Connector/NET implemented the conversion to a different type inconsistently. (Bug #99091, Bug #31087580) • When executing multiple INSERT ...
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...
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...
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...