openGauss 文本检索调试函数

ts_debug([ config regconfig, ] document text, OUT alias text, OUT description text, OUT token text, OUT dictionaries regdictionary[], OUT dictionary regdictionary, OUT lexemes text[])

描述：测试一个配置。

返回类型：setof record

示例：

openGauss=# SELECT ts_debug('english', 'The Brightest supernovaes');
                                     ts_debug                                      
-----------------------------------------------------------------------------------
 (asciiword,"Word, all ASCII",The,{english_stem},english_stem,{})
 (blank,"Space symbols"," ",{},,)
 (asciiword,"Word, all ASCII",Brightest,{english_stem},english_stem,{brightest})
 (blank,"Space symbols"," ",{},,)
 (asciiword,"Word, all ASCII",supernovaes,{english_stem},english_stem,{supernova})
(5 rows)
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ts_lexize(dict regdictionary, token text)

描述：测试一个数据字典。

返回类型：text[]

示例：

openGauss=# SELECT ts_lexize('english_stem', 'stars');
 ts_lexize 
-----------
 {star}
(1 row)
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ts_parse(parser_name text, document text, OUT tokid integer, OUT token text)

描述：测试一个解析。

返回类型：setof record

示例：

openGauss=# SELECT ts_parse('default', 'foo - bar');
 ts_parse  
-----------
 (1,foo)
 (12," ")
 (12,"- ")
 (1,bar)
(4 rows)
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ts_parse(parser_oid oid, document text, OUT tokid integer, OUT token text)

描述：测试一个解析。

返回类型：setof record

示例：

openGauss=# SELECT ts_parse(3722, 'foo - bar');
 ts_parse  
-----------
 (1,foo)
 (12," ")
 (12,"- ")
 (1,bar)
(4 rows)
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ts_token_type(parser_name text, OUT tokid integer, OUT alias text, OUT description text)

描述：获取分析器定义的记号类型。

返回类型：setof record

示例：

openGauss=# SELECT ts_token_type('default');
                        ts_token_type                         
--------------------------------------------------------------
 (1,asciiword,"Word, all ASCII")
 (2,word,"Word, all letters")
 (3,numword,"Word, letters and digits")
 (4,email,"Email address")
 (5,url,URL)
 (6,host,Host)
 (7,sfloat,"Scientific notation")
 (8,version,"Version number")
 (9,hword_numpart,"Hyphenated word part, letters and digits")
 (10,hword_part,"Hyphenated word part, all letters")
 (11,hword_asciipart,"Hyphenated word part, all ASCII")
 (12,blank,"Space symbols")
 (13,tag,"XML tag")
 (14,protocol,"Protocol head")
 (15,numhword,"Hyphenated word, letters and digits")
 (16,asciihword,"Hyphenated word, all ASCII")
 (17,hword,"Hyphenated word, all letters")
 (18,url_path,"URL path")
 (19,file,"File or path name")
 (20,float,"Decimal notation")
 (21,int,"Signed integer")
 (22,uint,"Unsigned integer")
 (23,entity,"XML entity")
(23 rows)
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ts_token_type(parser_oid oid, OUT tokid integer, OUT alias text, OUT description text)

描述：获取分析器定义的记号类型。

返回类型：setof record

示例：

openGauss=# SELECT ts_token_type(3722);
                        ts_token_type                         
--------------------------------------------------------------
 (1,asciiword,"Word, all ASCII")
 (2,word,"Word, all letters")
 (3,numword,"Word, letters and digits")
 (4,email,"Email address")
 (5,url,URL)
 (6,host,Host)
 (7,sfloat,"Scientific notation")
 (8,version,"Version number")
 (9,hword_numpart,"Hyphenated word part, letters and digits")
 (10,hword_part,"Hyphenated word part, all letters")
 (11,hword_asciipart,"Hyphenated word part, all ASCII")
 (12,blank,"Space symbols")
 (13,tag,"XML tag")
 (14,protocol,"Protocol head")
 (15,numhword,"Hyphenated word, letters and digits")
 (16,asciihword,"Hyphenated word, all ASCII")
 (17,hword,"Hyphenated word, all letters")
 (18,url_path,"URL path")
 (19,file,"File or path name")
 (20,float,"Decimal notation")
 (21,int,"Signed integer")
 (22,uint,"Unsigned integer")
 (23,entity,"XML entity")
(23 rows)
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ts_stat(sqlquery text, [ weights text, ] OUT word text, OUT ndoc integer, OUT nentry integer)

描述：获取tsvector列的统计数据。

返回类型：setof record

示例：

openGauss=# SELECT ts_stat('select ''hello world''::tsvector');
   ts_stat   
-------------
 (world,1,1)
 (hello,1,1)
(2 rows)
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