-- deal with numeric instability of ts_rank
SET extra_float_digits = 0;
--Base tsvector test
SELECT '1'::tsvector;
 tsvector 
----------
 '1'
(1 row)

SELECT '1 '::tsvector;
 tsvector 
----------
 '1'
(1 row)

SELECT ' 1'::tsvector;
 tsvector 
----------
 '1'
(1 row)

SELECT ' 1 '::tsvector;
 tsvector 
----------
 '1'
(1 row)

SELECT '1 2'::tsvector;
 tsvector 
----------
 '1' '2'
(1 row)

SELECT '''1 2'''::tsvector;
 tsvector 
----------
 '1 2'
(1 row)

SELECT E'''1 \\''2'''::tsvector;
 tsvector 
----------
 '1 ''2'
(1 row)

SELECT E'''1 \\''2''3'::tsvector;
  tsvector   
-------------
 '1 ''2' '3'
(1 row)

SELECT E'''1 \\''2'' 3'::tsvector;
  tsvector   
-------------
 '1 ''2' '3'
(1 row)

SELECT E'''1 \\''2'' '' 3'' 4 '::tsvector;
     tsvector     
------------------
 ' 3' '1 ''2' '4'
(1 row)

SELECT $$'\\as' ab\c ab\\c AB\\\c ab\\\\c$$::tsvector;
                tsvector                
----------------------------------------
 'AB\\c' '\\as' 'ab\\\\c' 'ab\\c' 'abc'
(1 row)

SELECT tsvectorin(tsvectorout($$'\\as' ab\c ab\\c AB\\\c ab\\\\c$$::tsvector));
               tsvectorin               
----------------------------------------
 'AB\\c' '\\as' 'ab\\\\c' 'ab\\c' 'abc'
(1 row)

SELECT '''w'':4A,3B,2C,1D,5 a:8';
       ?column?        
-----------------------
 'w':4A,3B,2C,1D,5 a:8
(1 row)

SELECT 'a:3A b:2a'::tsvector || 'ba:1234 a:1B';
          ?column?          
----------------------------
 'a':3A,4B 'b':2A 'ba':1237
(1 row)

SELECT $$'' '1' '2'$$::tsvector;  -- error, empty lexeme is not allowed
ERROR:  syntax error in tsvector: "'' '1' '2'"
LINE 1: SELECT $$'' '1' '2'$$::tsvector;
               ^
-- Also try it with non-error-throwing API
SELECT pg_input_is_valid('foo', 'tsvector');
 pg_input_is_valid 
-------------------
 t
(1 row)

SELECT pg_input_is_valid($$''$$, 'tsvector');
 pg_input_is_valid 
-------------------
 f
(1 row)

SELECT * FROM pg_input_error_info($$''$$, 'tsvector');
            message             | detail | hint | sql_error_code 
--------------------------------+--------+------+----------------
 syntax error in tsvector: "''" |        |      | 42601
(1 row)

--Base tsquery test
SELECT '1'::tsquery;
 tsquery 
---------
 '1'
(1 row)

SELECT '1 '::tsquery;
 tsquery 
---------
 '1'
(1 row)

SELECT ' 1'::tsquery;
 tsquery 
---------
 '1'
(1 row)

SELECT ' 1 '::tsquery;
 tsquery 
---------
 '1'
(1 row)

SELECT '''1 2'''::tsquery;
 tsquery 
---------
 '1 2'
(1 row)

SELECT E'''1 \\''2'''::tsquery;
 tsquery 
---------
 '1 ''2'
(1 row)

SELECT '!1'::tsquery;
 tsquery 
---------
 !'1'
(1 row)

SELECT '1|2'::tsquery;
  tsquery  
-----------
 '1' | '2'
(1 row)

SELECT '1|!2'::tsquery;
  tsquery   
------------
 '1' | !'2'
(1 row)

SELECT '!1|2'::tsquery;
  tsquery   
------------
 !'1' | '2'
(1 row)

SELECT '!1|!2'::tsquery;
   tsquery   
-------------
 !'1' | !'2'
(1 row)

SELECT '!(!1|!2)'::tsquery;
     tsquery      
------------------
 !( !'1' | !'2' )
(1 row)

SELECT '!(!1|2)'::tsquery;
     tsquery     
-----------------
 !( !'1' | '2' )
(1 row)

SELECT '!(1|!2)'::tsquery;
     tsquery     
-----------------
 !( '1' | !'2' )
(1 row)

SELECT '!(1|2)'::tsquery;
    tsquery     
----------------
 !( '1' | '2' )
(1 row)

SELECT '1&2'::tsquery;
  tsquery  
-----------
 '1' & '2'
(1 row)

SELECT '!1&2'::tsquery;
  tsquery   
------------
 !'1' & '2'
(1 row)

SELECT '1&!2'::tsquery;
  tsquery   
------------
 '1' & !'2'
(1 row)

SELECT '!1&!2'::tsquery;
   tsquery   
-------------
 !'1' & !'2'
(1 row)

SELECT '(1&2)'::tsquery;
  tsquery  
-----------
 '1' & '2'
(1 row)

SELECT '1&(2)'::tsquery;
  tsquery  
-----------
 '1' & '2'
(1 row)

SELECT '!(1)&2'::tsquery;
  tsquery   
------------
 !'1' & '2'
(1 row)

SELECT '!(1&2)'::tsquery;
    tsquery     
----------------
 !( '1' & '2' )
(1 row)

SELECT '1|2&3'::tsquery;
     tsquery     
-----------------
 '1' | '2' & '3'
(1 row)

SELECT '1|(2&3)'::tsquery;
     tsquery     
-----------------
 '1' | '2' & '3'
(1 row)

SELECT '(1|2)&3'::tsquery;
       tsquery       
---------------------
 ( '1' | '2' ) & '3'
(1 row)

SELECT '1|2&!3'::tsquery;
     tsquery      
------------------
 '1' | '2' & !'3'
(1 row)

SELECT '1|!2&3'::tsquery;
     tsquery      
------------------
 '1' | !'2' & '3'
(1 row)

SELECT '!1|2&3'::tsquery;
     tsquery      
------------------
 !'1' | '2' & '3'
(1 row)

SELECT '!1|(2&3)'::tsquery;
     tsquery      
------------------
 !'1' | '2' & '3'
(1 row)

SELECT '!(1|2)&3'::tsquery;
       tsquery        
----------------------
 !( '1' | '2' ) & '3'
(1 row)

SELECT '(!1|2)&3'::tsquery;
       tsquery        
----------------------
 ( !'1' | '2' ) & '3'
(1 row)

SELECT '1|(2|(4|(5|6)))'::tsquery;
           tsquery           
-----------------------------
 '1' | '2' | '4' | '5' | '6'
(1 row)

SELECT '1|2|4|5|6'::tsquery;
           tsquery           
-----------------------------
 '1' | '2' | '4' | '5' | '6'
(1 row)

SELECT '1&(2&(4&(5&6)))'::tsquery;
           tsquery           
-----------------------------
 '1' & '2' & '4' & '5' & '6'
(1 row)

SELECT '1&2&4&5&6'::tsquery;
           tsquery           
-----------------------------
 '1' & '2' & '4' & '5' & '6'
(1 row)

SELECT '1&(2&(4&(5|6)))'::tsquery;
             tsquery             
---------------------------------
 '1' & '2' & '4' & ( '5' | '6' )
(1 row)

SELECT '1&(2&(4&(5|!6)))'::tsquery;
             tsquery              
----------------------------------
 '1' & '2' & '4' & ( '5' | !'6' )
(1 row)

SELECT E'1&(''2''&('' 4''&(\\|5 | ''6 \\'' !|&'')))'::tsquery;
                 tsquery                  
------------------------------------------
 '1' & '2' & ' 4' & ( '|5' | '6 '' !|&' )
(1 row)

SELECT $$'\\as'$$::tsquery;
 tsquery 
---------
 '\\as'
(1 row)

SELECT 'a:* & nbb:*ac | doo:a* | goo'::tsquery;
               tsquery                
--------------------------------------
 'a':* & 'nbb':*AC | 'doo':*A | 'goo'
(1 row)

SELECT '!!b'::tsquery;
 tsquery 
---------
 !!'b'
(1 row)

SELECT '!!!b'::tsquery;
 tsquery 
---------
 !!!'b'
(1 row)

SELECT '!(!b)'::tsquery;
 tsquery 
---------
 !!'b'
(1 row)

SELECT 'a & !!b'::tsquery;
   tsquery   
-------------
 'a' & !!'b'
(1 row)

SELECT '!!a & b'::tsquery;
   tsquery   
-------------
 !!'a' & 'b'
(1 row)

SELECT '!!a & !!b'::tsquery;
    tsquery    
---------------
 !!'a' & !!'b'
(1 row)

-- Also try it with non-error-throwing API
SELECT pg_input_is_valid('foo', 'tsquery');
 pg_input_is_valid 
-------------------
 t
(1 row)

SELECT pg_input_is_valid('foo!', 'tsquery');
 pg_input_is_valid 
-------------------
 f
(1 row)

SELECT * FROM pg_input_error_info('foo!', 'tsquery');
             message             | detail | hint | sql_error_code 
---------------------------------+--------+------+----------------
 syntax error in tsquery: "foo!" |        |      | 42601
(1 row)

SELECT * FROM pg_input_error_info('a <100000> b', 'tsquery');
                                        message                                        | detail | hint | sql_error_code 
---------------------------------------------------------------------------------------+--------+------+----------------
 distance in phrase operator must be an integer value between zero and 16384 inclusive |        |      | 22023
(1 row)

--comparisons
SELECT 'a' < 'b & c'::tsquery as "true";
 true 
------
 t
(1 row)

SELECT 'a' > 'b & c'::tsquery as "false";
 false 
-------
 f
(1 row)

SELECT 'a | f' < 'b & c'::tsquery as "false";
 false 
-------
 t
(1 row)

SELECT 'a | ff' < 'b & c'::tsquery as "false";
 false 
-------
 f
(1 row)

SELECT 'a | f | g' < 'b & c'::tsquery as "false";
 false 
-------
 f
(1 row)

--concatenation
SELECT numnode( 'new'::tsquery );
 numnode 
---------
       1
(1 row)

SELECT numnode( 'new & york'::tsquery );
 numnode 
---------
       3
(1 row)

SELECT numnode( 'new & york | qwery'::tsquery );
 numnode 
---------
       5
(1 row)

SELECT 'foo & bar'::tsquery && 'asd';
       ?column?        
-----------------------
 'foo' & 'bar' & 'asd'
(1 row)

SELECT 'foo & bar'::tsquery || 'asd & fg';
           ?column?           
------------------------------
 'foo' & 'bar' | 'asd' & 'fg'
(1 row)

SELECT 'foo & bar'::tsquery || !!'asd & fg'::tsquery;
             ?column?              
-----------------------------------
 'foo' & 'bar' | !( 'asd' & 'fg' )
(1 row)

SELECT 'foo & bar'::tsquery && 'asd | fg';
             ?column?             
----------------------------------
 'foo' & 'bar' & ( 'asd' | 'fg' )
(1 row)

SELECT 'a' <-> 'b & d'::tsquery;
       ?column?        
-----------------------
 'a' <-> ( 'b' & 'd' )
(1 row)

SELECT 'a & g' <-> 'b & d'::tsquery;
            ?column?             
---------------------------------
 ( 'a' & 'g' ) <-> ( 'b' & 'd' )
(1 row)

SELECT 'a & g' <-> 'b | d'::tsquery;
            ?column?             
---------------------------------
 ( 'a' & 'g' ) <-> ( 'b' | 'd' )
(1 row)

SELECT 'a & g' <-> 'b <-> d'::tsquery;
             ?column?              
-----------------------------------
 ( 'a' & 'g' ) <-> ( 'b' <-> 'd' )
(1 row)

SELECT tsquery_phrase('a <3> g', 'b & d', 10);
         tsquery_phrase         
--------------------------------
 'a' <3> 'g' <10> ( 'b' & 'd' )
(1 row)

-- tsvector-tsquery operations
SELECT 'a b:89  ca:23A,64b d:34c'::tsvector @@ 'd:AC & ca' as "true";
 true 
------
 t
(1 row)

SELECT 'a b:89  ca:23A,64b d:34c'::tsvector @@ 'd:AC & ca:B' as "true";
 true 
------
 t
(1 row)

SELECT 'a b:89  ca:23A,64b d:34c'::tsvector @@ 'd:AC & ca:A' as "true";
 true 
------
 t
(1 row)

SELECT 'a b:89  ca:23A,64b d:34c'::tsvector @@ 'd:AC & ca:C' as "false";
 false 
-------
 f
(1 row)

SELECT 'a b:89  ca:23A,64b d:34c'::tsvector @@ 'd:AC & ca:CB' as "true";
 true 
------
 t
(1 row)

SELECT 'a b:89  ca:23A,64b d:34c'::tsvector @@ 'd:AC & c:*C' as "false";
 false 
-------
 f
(1 row)

SELECT 'a b:89  ca:23A,64b d:34c'::tsvector @@ 'd:AC & c:*CB' as "true";
 true 
------
 t
(1 row)

SELECT 'a b:89  ca:23A,64b cb:80c d:34c'::tsvector @@ 'd:AC & c:*C' as "true";
 true 
------
 t
(1 row)

SELECT 'a b:89  ca:23A,64c cb:80b d:34c'::tsvector @@ 'd:AC & c:*C' as "true";
 true 
------
 t
(1 row)

SELECT 'a b:89  ca:23A,64c cb:80b d:34c'::tsvector @@ 'd:AC & c:*B' as "true";
 true 
------
 t
(1 row)

SELECT 'wa:1D wb:2A'::tsvector @@ 'w:*D & w:*A'::tsquery as "true";
 true 
------
 t
(1 row)

SELECT 'wa:1D wb:2A'::tsvector @@ 'w:*D <-> w:*A'::tsquery as "true";
 true 
------
 t
(1 row)

SELECT 'wa:1A wb:2D'::tsvector @@ 'w:*D <-> w:*A'::tsquery as "false";
 false 
-------
 f
(1 row)

SELECT 'wa:1A'::tsvector @@ 'w:*A'::tsquery as "true";
 true 
------
 t
(1 row)

SELECT 'wa:1A'::tsvector @@ 'w:*D'::tsquery as "false";
 false 
-------
 f
(1 row)

SELECT 'wa:1A'::tsvector @@ '!w:*A'::tsquery as "false";
 false 
-------
 f
(1 row)

SELECT 'wa:1A'::tsvector @@ '!w:*D'::tsquery as "true";
 true 
------
 t
(1 row)

-- historically, a stripped tsvector matches queries ignoring weights:
SELECT strip('wa:1A'::tsvector) @@ 'w:*A'::tsquery as "true";
 true 
------
 t
(1 row)

SELECT strip('wa:1A'::tsvector) @@ 'w:*D'::tsquery as "true";
 true 
------
 t
(1 row)

SELECT strip('wa:1A'::tsvector) @@ '!w:*A'::tsquery as "false";
 false 
-------
 f
(1 row)

SELECT strip('wa:1A'::tsvector) @@ '!w:*D'::tsquery as "false";
 false 
-------
 f
(1 row)

SELECT 'supernova'::tsvector @@ 'super'::tsquery AS "false";
 false 
-------
 f
(1 row)

SELECT 'supeanova supernova'::tsvector @@ 'super'::tsquery AS "false";
 false 
-------
 f
(1 row)

SELECT 'supeznova supernova'::tsvector @@ 'super'::tsquery AS "false";
 false 
-------
 f
(1 row)

SELECT 'supernova'::tsvector @@ 'super:*'::tsquery AS "true";
 true 
------
 t
(1 row)

SELECT 'supeanova supernova'::tsvector @@ 'super:*'::tsquery AS "true";
 true 
------
 t
(1 row)

SELECT 'supeznova supernova'::tsvector @@ 'super:*'::tsquery AS "true";
 true 
------
 t
(1 row)

--phrase search
SELECT to_tsvector('simple', '1 2 3 1') @@ '1 <-> 2' AS "true";
 true 
------
 t
(1 row)

SELECT to_tsvector('simple', '1 2 3 1') @@ '1 <2> 2' AS "false";
 false 
-------
 f
(1 row)

SELECT to_tsvector('simple', '1 2 3 1') @@ '1 <-> 3' AS "false";
 false 
-------
 f
(1 row)

SELECT to_tsvector('simple', '1 2 3 1') @@ '1 <2> 3' AS "true";
 true 
------
 t
(1 row)

SELECT to_tsvector('simple', '1 2 1 2') @@ '1 <3> 2' AS "true";
 true 
------
 t
(1 row)

SELECT to_tsvector('simple', '1 2 11 3') @@ '1 <-> 3' AS "false";
 false 
-------
 f
(1 row)

SELECT to_tsvector('simple', '1 2 11 3') @@ '1:* <-> 3' AS "true";
 true 
------
 t
(1 row)

SELECT to_tsvector('simple', '1 2 3 4') @@ '1 <-> 2 <-> 3' AS "true";
 true 
------
 t
(1 row)

SELECT to_tsvector('simple', '1 2 3 4') @@ '(1 <-> 2) <-> 3' AS "true";
 true 
------
 t
(1 row)

SELECT to_tsvector('simple', '1 2 3 4') @@ '1 <-> (2 <-> 3)' AS "true";
 true 
------
 t
(1 row)

SELECT to_tsvector('simple', '1 2 3 4') @@ '1 <2> (2 <-> 3)' AS "false";
 false 
-------
 f
(1 row)

SELECT to_tsvector('simple', '1 2 1 2 3 4') @@ '(1 <-> 2) <-> 3' AS "true";
 true 
------
 t
(1 row)

SELECT to_tsvector('simple', '1 2 1 2 3 4') @@ '1 <-> 2 <-> 3' AS "true";
 true 
------
 t
(1 row)

-- without position data, phrase search does not match
SELECT strip(to_tsvector('simple', '1 2 3 4')) @@ '1 <-> 2 <-> 3' AS "false";
 false 
-------
 f
(1 row)

select to_tsvector('simple', 'q x q y') @@ 'q <-> (x & y)' AS "false";
 false 
-------
 f
(1 row)

select to_tsvector('simple', 'q x') @@ 'q <-> (x | y <-> z)' AS "true";
 true 
------
 t
(1 row)

select to_tsvector('simple', 'q y') @@ 'q <-> (x | y <-> z)' AS "false";
 false 
-------
 f
(1 row)

select to_tsvector('simple', 'q y z') @@ 'q <-> (x | y <-> z)' AS "true";
 true 
------
 t
(1 row)

select to_tsvector('simple', 'q y x') @@ 'q <-> (x | y <-> z)' AS "false";
 false 
-------
 f
(1 row)

select to_tsvector('simple', 'q x y') @@ 'q <-> (x | y <-> z)' AS "true";
 true 
------
 t
(1 row)

select to_tsvector('simple', 'q x') @@ '(x | y <-> z) <-> q' AS "false";
 false 
-------
 f
(1 row)

select to_tsvector('simple', 'x q') @@ '(x | y <-> z) <-> q' AS "true";
 true 
------
 t
(1 row)

select to_tsvector('simple', 'x y q') @@ '(x | y <-> z) <-> q' AS "false";
 false 
-------
 f
(1 row)

select to_tsvector('simple', 'x y z') @@ '(x | y <-> z) <-> q' AS "false";
 false 
-------
 f
(1 row)

select to_tsvector('simple', 'x y z q') @@ '(x | y <-> z) <-> q' AS "true";
 true 
------
 t
(1 row)

select to_tsvector('simple', 'y z q') @@ '(x | y <-> z) <-> q' AS "true";
 true 
------
 t
(1 row)

select to_tsvector('simple', 'y y q') @@ '(x | y <-> z) <-> q' AS "false";
 false 
-------
 f
(1 row)

select to_tsvector('simple', 'y y q') @@ '(!x | y <-> z) <-> q' AS "true";
 true 
------
 t
(1 row)

select to_tsvector('simple', 'x y q') @@ '(!x | y <-> z) <-> q' AS "true";
 true 
------
 t
(1 row)

select to_tsvector('simple', 'y y q') @@ '(x | y <-> !z) <-> q' AS "true";
 true 
------
 t
(1 row)

select to_tsvector('simple', 'x q') @@ '(x | y <-> !z) <-> q' AS "true";
 true 
------
 t
(1 row)

select to_tsvector('simple', 'x q') @@ '(!x | y <-> z) <-> q' AS "false";
 false 
-------
 f
(1 row)

select to_tsvector('simple', 'z q') @@ '(!x | y <-> z) <-> q' AS "true";
 true 
------
 t
(1 row)

select to_tsvector('simple', 'x y q') @@ '(!x | y) <-> y <-> q' AS "false";
 false 
-------
 f
(1 row)

select to_tsvector('simple', 'x y q') @@ '(!x | !y) <-> y <-> q' AS "true";
 true 
------
 t
(1 row)

select to_tsvector('simple', 'x y q') @@ '(x | !y) <-> y <-> q' AS "true";
 true 
------
 t
(1 row)

select to_tsvector('simple', 'x y q') @@ '(x | !!z) <-> y <-> q' AS "true";
 true 
------
 t
(1 row)

select to_tsvector('simple', 'x y q y') @@ '!x <-> y' AS "true";
 true 
------
 t
(1 row)

select to_tsvector('simple', 'x y q y') @@ '!x <-> !y' AS "true";
 true 
------
 t
(1 row)

select to_tsvector('simple', 'x y q y') @@ '!x <-> !!y' AS "true";
 true 
------
 t
(1 row)

select to_tsvector('simple', 'x y q y') @@ '!(x <-> y)' AS "false";
 false 
-------
 f
(1 row)

select to_tsvector('simple', 'x y q y') @@ '!(x <2> y)' AS "true";
 true 
------
 t
(1 row)

select strip(to_tsvector('simple', 'x y q y')) @@ '!x <-> y' AS "false";
 false 
-------
 f
(1 row)

select strip(to_tsvector('simple', 'x y q y')) @@ '!x <-> !y' AS "false";
 false 
-------
 f
(1 row)

select strip(to_tsvector('simple', 'x y q y')) @@ '!x <-> !!y' AS "false";
 false 
-------
 f
(1 row)

select strip(to_tsvector('simple', 'x y q y')) @@ '!(x <-> y)' AS "true";
 true 
------
 t
(1 row)

select strip(to_tsvector('simple', 'x y q y')) @@ '!(x <2> y)' AS "true";
 true 
------
 t
(1 row)

select to_tsvector('simple', 'x y q y') @@ '!foo' AS "true";
 true 
------
 t
(1 row)

select to_tsvector('simple', '') @@ '!foo' AS "true";
 true 
------
 t
(1 row)

--ranking
SELECT ts_rank(' a:1 s:2C d g'::tsvector, 'a | s');
  ts_rank  
-----------
 0.0911891
(1 row)

SELECT ts_rank(' a:1 sa:2C d g'::tsvector, 'a | s');
  ts_rank  
-----------
 0.0303964
(1 row)

SELECT ts_rank(' a:1 sa:2C d g'::tsvector, 'a | s:*');
  ts_rank  
-----------
 0.0911891
(1 row)

SELECT ts_rank(' a:1 sa:2C d g'::tsvector, 'a | sa:*');
  ts_rank  
-----------
 0.0911891
(1 row)

SELECT ts_rank(' a:1 s:2B d g'::tsvector, 'a | s');
 ts_rank  
----------
 0.151982
(1 row)

SELECT ts_rank(' a:1 s:2 d g'::tsvector, 'a | s');
  ts_rank  
-----------
 0.0607927
(1 row)

SELECT ts_rank(' a:1 s:2C d g'::tsvector, 'a & s');
 ts_rank  
----------
 0.140153
(1 row)

SELECT ts_rank(' a:1 s:2B d g'::tsvector, 'a & s');
 ts_rank  
----------
 0.198206
(1 row)

SELECT ts_rank(' a:1 s:2 d g'::tsvector, 'a & s');
  ts_rank  
-----------
 0.0991032
(1 row)

SELECT ts_rank_cd(' a:1 s:2C d g'::tsvector, 'a | s');
 ts_rank_cd 
------------
        0.3
(1 row)

SELECT ts_rank_cd(' a:1 sa:2C d g'::tsvector, 'a | s');
 ts_rank_cd 
------------
        0.1
(1 row)

SELECT ts_rank_cd(' a:1 sa:2C d g'::tsvector, 'a | s:*');
 ts_rank_cd 
------------
        0.3
(1 row)

SELECT ts_rank_cd(' a:1 sa:2C d g'::tsvector, 'a | sa:*');
 ts_rank_cd 
------------
        0.3
(1 row)

SELECT ts_rank_cd(' a:1 sa:3C sab:2c d g'::tsvector, 'a | sa:*');
 ts_rank_cd 
------------
        0.5
(1 row)

SELECT ts_rank_cd(' a:1 s:2B d g'::tsvector, 'a | s');
 ts_rank_cd 
------------
        0.5
(1 row)

SELECT ts_rank_cd(' a:1 s:2 d g'::tsvector, 'a | s');
 ts_rank_cd 
------------
        0.2
(1 row)

SELECT ts_rank_cd(' a:1 s:2C d g'::tsvector, 'a & s');
 ts_rank_cd 
------------
   0.133333
(1 row)

SELECT ts_rank_cd(' a:1 s:2B d g'::tsvector, 'a & s');
 ts_rank_cd 
------------
       0.16
(1 row)

SELECT ts_rank_cd(' a:1 s:2 d g'::tsvector, 'a & s');
 ts_rank_cd 
------------
        0.1
(1 row)

SELECT ts_rank_cd(' a:1 s:2A d g'::tsvector, 'a <-> s');
 ts_rank_cd 
------------
   0.181818
(1 row)

SELECT ts_rank_cd(' a:1 s:2C d g'::tsvector, 'a <-> s');
 ts_rank_cd 
------------
   0.133333
(1 row)

SELECT ts_rank_cd(' a:1 s:2 d g'::tsvector, 'a <-> s');
 ts_rank_cd 
------------
        0.1
(1 row)

SELECT ts_rank_cd(' a:1 s:2 d:2A g'::tsvector, 'a <-> s');
 ts_rank_cd 
------------
        0.1
(1 row)

SELECT ts_rank_cd(' a:1 s:2,3A d:2A g'::tsvector, 'a <2> s:A');
 ts_rank_cd 
------------
  0.0909091
(1 row)

SELECT ts_rank_cd(' a:1 b:2 s:3A d:2A g'::tsvector, 'a <2> s:A');
 ts_rank_cd 
------------
  0.0909091
(1 row)

SELECT ts_rank_cd(' a:1 sa:2D sb:2A g'::tsvector, 'a <-> s:*');
 ts_rank_cd 
------------
        0.1
(1 row)

SELECT ts_rank_cd(' a:1 sa:2A sb:2D g'::tsvector, 'a <-> s:*');
 ts_rank_cd 
------------
        0.1
(1 row)

SELECT ts_rank_cd(' a:1 sa:2A sb:2D g'::tsvector, 'a <-> s:* <-> sa:A');
 ts_rank_cd 
------------
          0
(1 row)

SELECT ts_rank_cd(' a:1 sa:2A sb:2D g'::tsvector, 'a <-> s:* <-> sa:B');
 ts_rank_cd 
------------
          0
(1 row)

SELECT 'a:1 b:2'::tsvector @@ 'a <-> b'::tsquery AS "true";
 true 
------
 t
(1 row)

SELECT 'a:1 b:2'::tsvector @@ 'a <0> b'::tsquery AS "false";
 false 
-------
 f
(1 row)

SELECT 'a:1 b:2'::tsvector @@ 'a <1> b'::tsquery AS "true";
 true 
------
 t
(1 row)

SELECT 'a:1 b:2'::tsvector @@ 'a <2> b'::tsquery AS "false";
 false 
-------
 f
(1 row)

SELECT 'a:1 b:3'::tsvector @@ 'a <-> b'::tsquery AS "false";
 false 
-------
 f
(1 row)

SELECT 'a:1 b:3'::tsvector @@ 'a <0> b'::tsquery AS "false";
 false 
-------
 f
(1 row)

SELECT 'a:1 b:3'::tsvector @@ 'a <1> b'::tsquery AS "false";
 false 
-------
 f
(1 row)

SELECT 'a:1 b:3'::tsvector @@ 'a <2> b'::tsquery AS "true";
 true 
------
 t
(1 row)

SELECT 'a:1 b:3'::tsvector @@ 'a <3> b'::tsquery AS "false";
 false 
-------
 f
(1 row)

SELECT 'a:1 b:3'::tsvector @@ 'a <0> a:*'::tsquery AS "true";
 true 
------
 t
(1 row)

-- tsvector editing operations
SELECT strip('w:12B w:13* w:12,5,6 a:1,3* a:3 w asd:1dc asd'::tsvector);
     strip     
---------------
 'a' 'asd' 'w'
(1 row)

SELECT strip('base:7 hidden:6 rebel:1 spaceship:2,33A,34B,35C,36D strike:3'::tsvector);
                    strip                     
----------------------------------------------
 'base' 'hidden' 'rebel' 'spaceship' 'strike'
(1 row)

SELECT strip('base hidden rebel spaceship strike'::tsvector);
                    strip                     
----------------------------------------------
 'base' 'hidden' 'rebel' 'spaceship' 'strike'
(1 row)

SELECT ts_delete(to_tsvector('english', 'Rebel spaceships, striking from a hidden base'), 'spaceship');
                ts_delete                 
------------------------------------------
 'base':7 'hidden':6 'rebel':1 'strike':3
(1 row)

SELECT ts_delete('base:7 hidden:6 rebel:1 spaceship:2,33A,34B,35C,36D strike:3'::tsvector, 'base');
                          ts_delete                           
--------------------------------------------------------------
 'hidden':6 'rebel':1 'spaceship':2,33A,34B,35C,36 'strike':3
(1 row)

SELECT ts_delete('base:7 hidden:6 rebel:1 spaceship:2,33A,34B,35C,36D strike:3'::tsvector, 'bas');
                               ts_delete                               
-----------------------------------------------------------------------
 'base':7 'hidden':6 'rebel':1 'spaceship':2,33A,34B,35C,36 'strike':3
(1 row)

SELECT ts_delete('base:7 hidden:6 rebel:1 spaceship:2,33A,34B,35C,36D strike:3'::tsvector, 'bases');
                               ts_delete                               
-----------------------------------------------------------------------
 'base':7 'hidden':6 'rebel':1 'spaceship':2,33A,34B,35C,36 'strike':3
(1 row)

SELECT ts_delete('base:7 hidden:6 rebel:1 spaceship:2,33A,34B,35C,36D strike:3'::tsvector, 'spaceship');
                ts_delete                 
------------------------------------------
 'base':7 'hidden':6 'rebel':1 'strike':3
(1 row)

SELECT ts_delete('base hidden rebel spaceship strike'::tsvector, 'spaceship');
            ts_delete             
----------------------------------
 'base' 'hidden' 'rebel' 'strike'
(1 row)

SELECT ts_delete('base:7 hidden:6 rebel:1 spaceship:2,33A,34B,35C,36D strike:3'::tsvector, ARRAY['spaceship','rebel']);
           ts_delete            
--------------------------------
 'base':7 'hidden':6 'strike':3
(1 row)

SELECT ts_delete('base:7 hidden:6 rebel:1 spaceship:2,33A,34B,35C,36D strike:3'::tsvector, ARRAY['spaceships','rebel']);
                          ts_delete                          
-------------------------------------------------------------
 'base':7 'hidden':6 'spaceship':2,33A,34B,35C,36 'strike':3
(1 row)

SELECT ts_delete('base:7 hidden:6 rebel:1 spaceship:2,33A,34B,35C,36D strike:3'::tsvector, ARRAY['spaceshi','rebel']);
                          ts_delete                          
-------------------------------------------------------------
 'base':7 'hidden':6 'spaceship':2,33A,34B,35C,36 'strike':3
(1 row)

SELECT ts_delete('base:7 hidden:6 rebel:1 spaceship:2,33A,34B,35C,36D strike:3'::tsvector, ARRAY['spaceship','leya','rebel']);
           ts_delete            
--------------------------------
 'base':7 'hidden':6 'strike':3
(1 row)

SELECT ts_delete('base hidden rebel spaceship strike'::tsvector, ARRAY['spaceship','leya','rebel']);
        ts_delete         
--------------------------
 'base' 'hidden' 'strike'
(1 row)

SELECT ts_delete('base hidden rebel spaceship strike'::tsvector, ARRAY['spaceship','leya','rebel','rebel']);
        ts_delete         
--------------------------
 'base' 'hidden' 'strike'
(1 row)

SELECT ts_delete('base hidden rebel spaceship strike'::tsvector, ARRAY['spaceship','leya','rebel', '', NULL]);
        ts_delete         
--------------------------
 'base' 'hidden' 'strike'
(1 row)

SELECT unnest('base:7 hidden:6 rebel:1 spaceship:2,33A,34B,35C,36D strike:3'::tsvector);
                   unnest                    
---------------------------------------------
 (base,{7},{D})
 (hidden,{6},{D})
 (rebel,{1},{D})
 (spaceship,"{2,33,34,35,36}","{D,A,B,C,D}")
 (strike,{3},{D})
(5 rows)

SELECT unnest('base hidden rebel spaceship strike'::tsvector);
    unnest     
---------------
 (base,,)
 (hidden,,)
 (rebel,,)
 (spaceship,,)
 (strike,,)
(5 rows)

SELECT * FROM unnest('base:7 hidden:6 rebel:1 spaceship:2,33A,34B,35C,36D strike:3'::tsvector);
  lexeme   |    positions    |   weights   
-----------+-----------------+-------------
 base      | {7}             | {D}
 hidden    | {6}             | {D}
 rebel     | {1}             | {D}
 spaceship | {2,33,34,35,36} | {D,A,B,C,D}
 strike    | {3}             | {D}
(5 rows)

SELECT * FROM unnest('base hidden rebel spaceship strike'::tsvector);
  lexeme   | positions | weights 
-----------+-----------+---------
 base      |           | 
 hidden    |           | 
 rebel     |           | 
 spaceship |           | 
 strike    |           | 
(5 rows)

SELECT lexeme, positions[1] from unnest('base:7 hidden:6 rebel:1 spaceship:2,33A,34B,35C,36D strike:3'::tsvector);
  lexeme   | positions 
-----------+-----------
 base      |         7
 hidden    |         6
 rebel     |         1
 spaceship |         2
 strike    |         3
(5 rows)

SELECT tsvector_to_array('base:7 hidden:6 rebel:1 spaceship:2,33A,34B,35C,36D strike:3'::tsvector);
          tsvector_to_array           
--------------------------------------
 {base,hidden,rebel,spaceship,strike}
(1 row)

SELECT tsvector_to_array('base hidden rebel spaceship strike'::tsvector);
          tsvector_to_array           
--------------------------------------
 {base,hidden,rebel,spaceship,strike}
(1 row)

SELECT array_to_tsvector(ARRAY['base','hidden','rebel','spaceship','strike']);
              array_to_tsvector               
----------------------------------------------
 'base' 'hidden' 'rebel' 'spaceship' 'strike'
(1 row)

-- null and empty string are disallowed, since we mustn't make an empty lexeme
SELECT array_to_tsvector(ARRAY['base','hidden','rebel','spaceship', NULL]);
ERROR:  lexeme array may not contain nulls
SELECT array_to_tsvector(ARRAY['base','hidden','rebel','spaceship', '']);
ERROR:  lexeme array may not contain empty strings
-- array_to_tsvector must sort and de-dup
SELECT array_to_tsvector(ARRAY['foo','bar','baz','bar']);
 array_to_tsvector 
-------------------
 'bar' 'baz' 'foo'
(1 row)

SELECT setweight('w:12B w:13* w:12,5,6 a:1,3* a:3 w asd:1dc asd zxc:81,567,222A'::tsvector, 'c');
                        setweight                         
----------------------------------------------------------
 'a':1C,3C 'asd':1C 'w':5C,6C,12C,13C 'zxc':81C,222C,567C
(1 row)

SELECT setweight('a:1,3A asd:1C w:5,6,12B,13A zxc:81,222A,567'::tsvector, 'c');
                        setweight                         
----------------------------------------------------------
 'a':1C,3C 'asd':1C 'w':5C,6C,12C,13C 'zxc':81C,222C,567C
(1 row)

SELECT setweight('a:1,3A asd:1C w:5,6,12B,13A zxc:81,222A,567'::tsvector, 'c', '{a}');
                      setweight                       
------------------------------------------------------
 'a':1C,3C 'asd':1C 'w':5,6,12B,13A 'zxc':81,222A,567
(1 row)

SELECT setweight('a:1,3A asd:1C w:5,6,12B,13A zxc:81,222A,567'::tsvector, 'c', '{a}');
                      setweight                       
------------------------------------------------------
 'a':1C,3C 'asd':1C 'w':5,6,12B,13A 'zxc':81,222A,567
(1 row)

SELECT setweight('a:1,3A asd:1C w:5,6,12B,13A zxc:81,222A,567'::tsvector, 'c', '{a,zxc}');
                       setweight                        
--------------------------------------------------------
 'a':1C,3C 'asd':1C 'w':5,6,12B,13A 'zxc':81C,222C,567C
(1 row)

SELECT setweight('a asd w:5,6,12B,13A zxc'::tsvector, 'c', ARRAY['a', 'zxc', '', NULL]);
            setweight            
---------------------------------
 'a' 'asd' 'w':5,6,12B,13A 'zxc'
(1 row)

SELECT ts_filter('base:7A empir:17 evil:15 first:11 galact:16 hidden:6A rebel:1A spaceship:2A strike:3A victori:12 won:9'::tsvector, '{a}');
                          ts_filter                          
-------------------------------------------------------------
 'base':7A 'hidden':6A 'rebel':1A 'spaceship':2A 'strike':3A
(1 row)

SELECT ts_filter('base hidden rebel spaceship strike'::tsvector, '{a}');
 ts_filter 
-----------
 
(1 row)

SELECT ts_filter('base hidden rebel spaceship strike'::tsvector, '{a,b,NULL}');
ERROR:  weight array may not contain nulls