mirror of
https://github.com/postgres/postgres.git
synced 2025-04-21 12:05:57 +03:00
Misc documentation fixes.
- Misc grammar and punctuation fixes. - Stylistic cleanup: use spaces between function arguments and JSON fields in examples. For example "foo(a,b)" -> "foo(a, b)". Add semicolon after last END in a few PL/pgSQL examples that were missing them. - Make sentence that talked about "..." and ".." operators more clear, by avoiding to end the sentence with "..". That makes it look the same as "..." - Fix syntax description for HAVING: HAVING conditions cannot be repeated Patch by Justin Pryzby, per Yaroslav Schekin's report. Backpatch to all supported versions, to the extent that the patch applies easily. Discussion: https://www.postgresql.org/message-id/20201005191922.GE17626%40telsasoft.com
This commit is contained in:
Heikki Linnakangas
parent
2a972e0165
commit
c5f42daa60
@ -1525,7 +1525,7 @@
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</para>
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<para>
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Role can log in. That is, this role can be given as the initial
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session authorization identifier
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session authorization identifier.
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</para></entry>
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</row>
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@ -10168,8 +10168,8 @@ LOG: CleanUpLock: deleting: lock(0xb7acd844) id(24688,24696,0,0,0,1)
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</term>
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<listitem>
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<para>
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If set, do not trace locks for tables below this OID. (use to avoid
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output on system tables)
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If set, do not trace locks for tables below this OID (used to avoid
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output on system tables).
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</para>
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<para>
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This parameter is only available if the <symbol>LOCK_DEBUG</symbol>
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@ -166,7 +166,7 @@ SELECT dblink_connect('myconn', 'fdtest');
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OK
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(1 row)
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SELECT * FROM dblink('myconn','SELECT * FROM foo') AS t(a int, b text, c text[]);
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SELECT * FROM dblink('myconn', 'SELECT * FROM foo') AS t(a int, b text, c text[]);
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a | b | c
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----+---+---------------
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0 | a | {a0,b0,c0}
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@ -615,7 +615,7 @@ dblink_exec(text sql [, bool fail_on_error]) returns text
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<para>
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The SQL command that you wish to execute in the remote database,
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for example
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<literal>insert into foo values(0,'a','{"a0","b0","c0"}')</literal>.
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<literal>insert into foo values(0, 'a', '{"a0","b0","c0"}')</literal>.
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</para>
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</listitem>
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</varlistentry>
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@ -652,7 +652,7 @@ SELECT dblink_connect('dbname=dblink_test_standby');
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OK
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(1 row)
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SELECT dblink_exec('insert into foo values(21,''z'',''{"a0","b0","c0"}'');');
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SELECT dblink_exec('insert into foo values(21, ''z'', ''{"a0","b0","c0"}'');');
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dblink_exec
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-----------------
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INSERT 943366 1
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@ -664,7 +664,7 @@ SELECT dblink_connect('myconn', 'dbname=regression');
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OK
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(1 row)
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SELECT dblink_exec('myconn', 'insert into foo values(21,''z'',''{"a0","b0","c0"}'');');
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SELECT dblink_exec('myconn', 'insert into foo values(21, ''z'', ''{"a0","b0","c0"}'');');
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dblink_exec
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------------------
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INSERT 6432584 1
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@ -15034,7 +15034,7 @@ table2-mapping
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per <function>to_json</function> or <function>to_jsonb</function>.
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</para>
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<para>
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<literal>json_build_array(1,2,'foo',4,5)</literal>
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<literal>json_build_array(1, 2, 'foo', 4, 5)</literal>
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<returnvalue>[1, 2, "foo", 4, 5]</returnvalue>
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</para></entry>
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</row>
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@ -15061,7 +15061,7 @@ table2-mapping
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per <function>to_json</function> or <function>to_jsonb</function>.
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</para>
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<para>
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<literal>json_build_object('foo',1,2,row(3,'bar'))</literal>
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<literal>json_build_object('foo', 1, 2, row(3,'bar'))</literal>
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<returnvalue>{"foo" : 1, "2" : {"f1":3,"f2":"bar"}}</returnvalue>
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</para></entry>
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</row>
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@ -15093,7 +15093,7 @@ table2-mapping
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<literal>json_object('{a, 1, b, "def", c, 3.5}')</literal>
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<returnvalue>{"a" : "1", "b" : "def", "c" : "3.5"}</returnvalue>
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</para>
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<para><literal>json_object('{{a, 1},{b, "def"},{c, 3.5}}')</literal>
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<para><literal>json_object('{{a, 1}, {b, "def"}, {c, 3.5}}')</literal>
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<returnvalue>{"a" : "1", "b" : "def", "c" : "3.5"}</returnvalue>
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</para></entry>
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</row>
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@ -15113,7 +15113,7 @@ table2-mapping
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the one-argument form.
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</para>
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<para>
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<literal>json_object('{a, b}', '{1,2}')</literal>
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<literal>json_object('{a,b}', '{1,2}')</literal>
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<returnvalue>{"a": "1", "b": "2"}</returnvalue>
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</para></entry>
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</row>
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@ -15504,7 +15504,7 @@ table2-mapping
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<literal>create type twoints as (a int, b int);</literal>
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</para>
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<para>
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<literal>select * from json_populate_recordset(null::twoints, '[{"a":1,"b":2},{"a":3,"b":4}]')</literal>
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<literal>select * from json_populate_recordset(null::twoints, '[{"a":1,"b":2}, {"a":3,"b":4}]')</literal>
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<returnvalue></returnvalue>
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<programlisting>
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a | b
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@ -15579,7 +15579,7 @@ table2-mapping
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for <function>json[b]_populate_record</function>.
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</para>
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<para>
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<literal>select * from json_to_recordset('[{"a":1,"b":"foo"},{"a":"2","c":"bar"}]') as x(a int, b text)</literal>
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<literal>select * from json_to_recordset('[{"a":1,"b":"foo"}, {"a":"2","c":"bar"}]') as x(a int, b text)</literal>
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<returnvalue></returnvalue>
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<programlisting>
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a | b
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@ -15617,11 +15617,11 @@ table2-mapping
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or at the end of the array if it is positive.
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</para>
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<para>
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<literal>jsonb_set('[{"f1":1,"f2":null},2,null,3]', '{0,f1}','[2,3,4]', false)</literal>
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<literal>jsonb_set('[{"f1":1,"f2":null},2,null,3]', '{0,f1}', '[2,3,4]', false)</literal>
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<returnvalue>[{"f1": [2, 3, 4], "f2": null}, 2, null, 3]</returnvalue>
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</para>
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<para>
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<literal>jsonb_set('[{"f1":1,"f2":null},2]', '{0,f3}','[2,3,4]')</literal>
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<literal>jsonb_set('[{"f1":1,"f2":null},2]', '{0,f3}', '[2,3,4]')</literal>
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<returnvalue>[{"f1": 1, "f2": null, "f3": [2, 3, 4]}, 2]</returnvalue>
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</para></entry>
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</row>
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@ -15713,7 +15713,7 @@ table2-mapping
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untouched.
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</para>
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<para>
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<literal>json_strip_nulls('[{"f1":1,"f2":null},2,null,3]')</literal>
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<literal>json_strip_nulls('[{"f1":1, "f2":null}, 2, null, 3]')</literal>
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<returnvalue>[{"f1":1},2,null,3]</returnvalue>
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</para></entry>
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</row>
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@ -15737,7 +15737,7 @@ table2-mapping
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as the <literal>@?</literal> and <literal>@@</literal> operators do.
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</para>
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<para>
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<literal>jsonb_path_exists('{"a":[1,2,3,4,5]}', '$.a[*] ? (@ >= $min && @ <= $max)', '{"min":2,"max":4}')</literal>
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<literal>jsonb_path_exists('{"a":[1,2,3,4,5]}', '$.a[*] ? (@ >= $min && @ <= $max)', '{"min":2, "max":4}')</literal>
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<returnvalue>t</returnvalue>
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</para></entry>
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</row>
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@ -15759,7 +15759,7 @@ table2-mapping
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for <function>jsonb_path_exists</function>.
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</para>
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<para>
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<literal>jsonb_path_match('{"a":[1,2,3,4,5]}', 'exists($.a[*] ? (@ >= $min && @ <= $max))', '{"min":2,"max":4}')</literal>
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<literal>jsonb_path_match('{"a":[1,2,3,4,5]}', 'exists($.a[*] ? (@ >= $min && @ <= $max))', '{"min":2, "max":4}')</literal>
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<returnvalue>t</returnvalue>
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</para></entry>
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</row>
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@ -15780,7 +15780,7 @@ table2-mapping
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for <function>jsonb_path_exists</function>.
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</para>
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<para>
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<literal>select * from jsonb_path_query('{"a":[1,2,3,4,5]}', '$.a[*] ? (@ >= $min && @ <= $max)', '{"min":2,"max":4}')</literal>
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<literal>select * from jsonb_path_query('{"a":[1,2,3,4,5]}', '$.a[*] ? (@ >= $min && @ <= $max)', '{"min":2, "max":4}')</literal>
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<returnvalue></returnvalue>
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<programlisting>
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jsonb_path_query
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@ -15808,7 +15808,7 @@ table2-mapping
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for <function>jsonb_path_exists</function>.
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</para>
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<para>
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<literal>jsonb_path_query_array('{"a":[1,2,3,4,5]}', '$.a[*] ? (@ >= $min && @ <= $max)', '{"min":2,"max":4}')</literal>
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<literal>jsonb_path_query_array('{"a":[1,2,3,4,5]}', '$.a[*] ? (@ >= $min && @ <= $max)', '{"min":2, "max":4}')</literal>
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<returnvalue>[2, 3, 4]</returnvalue>
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</para></entry>
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</row>
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@ -15830,7 +15830,7 @@ table2-mapping
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for <function>jsonb_path_exists</function>.
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</para>
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<para>
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<literal>jsonb_path_query_first('{"a":[1,2,3,4,5]}', '$.a[*] ? (@ >= $min && @ <= $max)', '{"min":2,"max":4}')</literal>
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<literal>jsonb_path_query_first('{"a":[1,2,3,4,5]}', '$.a[*] ? (@ >= $min && @ <= $max)', '{"min":2, "max":4}')</literal>
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<returnvalue>2</returnvalue>
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</para></entry>
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</row>
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@ -15902,7 +15902,7 @@ table2-mapping
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Converts the given JSON value to pretty-printed, indented text.
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</para>
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<para>
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<literal>jsonb_pretty('[{"f1":1,"f2":null},2]')</literal>
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<literal>jsonb_pretty('[{"f1":1,"f2":null}, 2]')</literal>
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<returnvalue></returnvalue>
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<programlisting>
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[
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@ -26599,7 +26599,7 @@ BEGIN
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obj.object_name,
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obj.object_identity;
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END LOOP;
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END
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END;
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$$;
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CREATE EVENT TRIGGER test_event_trigger_for_drops
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ON sql_drop
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@ -612,7 +612,7 @@
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</para>
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<para>
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<varname>gin_pending_list_limit</varname> can be overridden for individual
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GIN indexes by changing storage parameters, and which allows each
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GIN indexes by changing storage parameters, which allows each
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GIN index to have its own cleanup threshold.
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For example, it's possible to increase the threshold only for the GIN
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index which can be updated heavily, and decrease it otherwise.
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@ -1502,7 +1502,7 @@ synchronous_standby_names = 'ANY 2 (s1, s2, s3)'
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Note that in this mode, the server will apply WAL one file at a
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time, so if you use the standby server for queries (see Hot Standby),
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there is a delay between an action in the primary and when the
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action becomes visible in the standby, corresponding the time it takes
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action becomes visible in the standby, corresponding to the time it takes
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to fill up the WAL file. <varname>archive_timeout</varname> can be used to make that delay
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shorter. Also note that you can't combine streaming replication with
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this method.
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@ -631,7 +631,7 @@ b
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Does <type>hstore</type> contain key?
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</para>
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<para>
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<literal>exist('a=>1','a')</literal>
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<literal>exist('a=>1', 'a')</literal>
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<returnvalue>t</returnvalue>
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</para></entry>
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</row>
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@ -647,7 +647,7 @@ b
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for key?
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</para>
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<para>
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<literal>defined('a=>NULL','a')</literal>
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<literal>defined('a=>NULL', 'a')</literal>
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<returnvalue>f</returnvalue>
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</para></entry>
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</row>
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@ -662,7 +662,7 @@ b
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Deletes pair with matching key.
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</para>
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<para>
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<literal>delete('a=>1,b=>2','b')</literal>
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<literal>delete('a=>1,b=>2', 'b')</literal>
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<returnvalue>"a"=>"1"</returnvalue>
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</para></entry>
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</row>
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@ -676,7 +676,7 @@ b
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Deletes pairs with matching keys.
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</para>
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<para>
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<literal>delete('a=>1,b=>2,c=>3',ARRAY['a','b'])</literal>
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<literal>delete('a=>1,b=>2,c=>3', ARRAY['a','b'])</literal>
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<returnvalue>"c"=>"3"</returnvalue>
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</para></entry>
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</row>
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@ -690,7 +690,7 @@ b
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Deletes pairs matching those in the second argument.
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</para>
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<para>
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<literal>delete('a=>1,b=>2','a=>4,b=>2'::hstore)</literal>
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<literal>delete('a=>1,b=>2', 'a=>4,b=>2'::hstore)</literal>
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<returnvalue>"a"=>"1"</returnvalue>
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</para></entry>
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</row>
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@ -612,7 +612,7 @@ amgettuple (IndexScanDesc scan,
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will pass the caller's snapshot test. On success, <function>amgettuple</function>
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must also set <literal>scan->xs_recheck</literal> to true or false.
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False means it is certain that the index entry matches the scan keys.
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true means this is not certain, and the conditions represented by the
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True means this is not certain, and the conditions represented by the
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scan keys must be rechecked against the heap tuple after fetching it.
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This provision supports <quote>lossy</quote> index operators.
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Note that rechecking will extend only to the scan conditions; a partial
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@ -14,7 +14,7 @@
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hard-coded list of prefixes; this list of prefixes is also used to hyphenate
|
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numbers on output. Since new prefixes are assigned from time to time, the
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list of prefixes may be out of date. It is hoped that a future version of
|
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this module will obtained the prefix list from one or more tables that
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this module will obtain the prefix list from one or more tables that
|
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can be easily updated by users as needed; however, at present, the
|
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list can only be updated by modifying the source code and recompiling.
|
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Alternatively, prefix validation and hyphenation support may be
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@ -460,7 +460,7 @@ Europe & Russia*@ & !Transportation
|
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position <parameter>end</parameter>-1 (counting from 0).
|
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</para>
|
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<para>
|
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<literal>subltree('Top.Child1.Child2',1,2)</literal>
|
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<literal>subltree('Top.Child1.Child2', 1, 2)</literal>
|
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<returnvalue>Child1</returnvalue>
|
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</para></entry>
|
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</row>
|
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@ -480,7 +480,7 @@ Europe & Russia*@ & !Transportation
|
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the end of the path.
|
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</para>
|
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<para>
|
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<literal>subpath('Top.Child1.Child2',0,2)</literal>
|
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<literal>subpath('Top.Child1.Child2', 0, 2)</literal>
|
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<returnvalue>Top.Child1</returnvalue>
|
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</para></entry>
|
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</row>
|
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@ -497,7 +497,7 @@ Europe & Russia*@ & !Transportation
|
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from the end of the path.
|
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</para>
|
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<para>
|
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<literal>subpath('Top.Child1.Child2',1)</literal>
|
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<literal>subpath('Top.Child1.Child2', 1)</literal>
|
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<returnvalue>Child1.Child2</returnvalue>
|
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</para></entry>
|
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</row>
|
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@ -528,7 +528,7 @@ Europe & Russia*@ & !Transportation
|
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<parameter>a</parameter>, or -1 if not found.
|
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</para>
|
||||
<para>
|
||||
<literal>index('0.1.2.3.5.4.5.6.8.5.6.8','5.6')</literal>
|
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<literal>index('0.1.2.3.5.4.5.6.8.5.6.8', '5.6')</literal>
|
||||
<returnvalue>6</returnvalue>
|
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</para></entry>
|
||||
</row>
|
||||
@ -546,7 +546,7 @@ Europe & Russia*@ & !Transportation
|
||||
start <parameter>-offset</parameter> labels from the end of the path.
|
||||
</para>
|
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<para>
|
||||
<literal>index('0.1.2.3.5.4.5.6.8.5.6.8','5.6',-4)</literal>
|
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<literal>index('0.1.2.3.5.4.5.6.8.5.6.8', '5.6', -4)</literal>
|
||||
<returnvalue>9</returnvalue>
|
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</para></entry>
|
||||
</row>
|
||||
@ -584,7 +584,7 @@ Europe & Russia*@ & !Transportation
|
||||
(up to 8 arguments are supported).
|
||||
</para>
|
||||
<para>
|
||||
<literal>lca('1.2.3','1.2.3.4.5.6')</literal>
|
||||
<literal>lca('1.2.3', '1.2.3.4.5.6')</literal>
|
||||
<returnvalue>1.2</returnvalue>
|
||||
</para></entry>
|
||||
</row>
|
||||
|
||||
@ -1245,7 +1245,7 @@ ERROR: could not serialize access due to read/write dependencies among transact
|
||||
<para>
|
||||
The <literal>FOR UPDATE</literal> lock mode
|
||||
is also acquired by any <command>DELETE</command> on a row, and also by an
|
||||
<command>UPDATE</command> that modifies the values on certain columns. Currently,
|
||||
<command>UPDATE</command> that modifies the values of certain columns. Currently,
|
||||
the set of columns considered for the <command>UPDATE</command> case are those that
|
||||
have a unique index on them that can be used in a foreign key (so partial
|
||||
indexes and expressional indexes are not considered), but this may change
|
||||
|
||||
@ -471,7 +471,7 @@ EXPLAIN SELECT * FROM pgbench_accounts WHERE filler LIKE '%x%';
|
||||
</para>
|
||||
|
||||
<para>
|
||||
The following operations are always parallel restricted.
|
||||
The following operations are always parallel restricted:
|
||||
</para>
|
||||
|
||||
<itemizedlist>
|
||||
|
||||
@ -1181,7 +1181,7 @@ BEGIN
|
||||
SELECT users.userid INTO STRICT userid
|
||||
FROM users WHERE users.username = get_userid.username;
|
||||
RETURN userid;
|
||||
END
|
||||
END;
|
||||
$$ LANGUAGE plpgsql;
|
||||
</programlisting>
|
||||
On failure, this function might produce an error message such as
|
||||
@ -1854,7 +1854,7 @@ BEGIN
|
||||
RETURN NEXT r; -- return current row of SELECT
|
||||
END LOOP;
|
||||
RETURN;
|
||||
END
|
||||
END;
|
||||
$BODY$
|
||||
LANGUAGE plpgsql;
|
||||
|
||||
@ -1882,7 +1882,7 @@ BEGIN
|
||||
END IF;
|
||||
|
||||
RETURN;
|
||||
END
|
||||
END;
|
||||
$BODY$
|
||||
LANGUAGE plpgsql;
|
||||
|
||||
@ -1956,7 +1956,7 @@ DECLARE myvar int := 5;
|
||||
BEGIN
|
||||
CALL triple(myvar);
|
||||
RAISE NOTICE 'myvar = %', myvar; -- prints 15
|
||||
END
|
||||
END;
|
||||
$$;
|
||||
</programlisting>
|
||||
</para>
|
||||
@ -3559,7 +3559,7 @@ BEGIN
|
||||
ROLLBACK;
|
||||
END IF;
|
||||
END LOOP;
|
||||
END
|
||||
END;
|
||||
$$;
|
||||
|
||||
CALL transaction_test1();
|
||||
@ -5213,7 +5213,7 @@ DECLARE
|
||||
f1 int;
|
||||
BEGIN
|
||||
RETURN f1;
|
||||
END
|
||||
END;
|
||||
$$ LANGUAGE plpgsql;
|
||||
WARNING: variable "f1" shadows a previously defined variable
|
||||
LINE 3: f1 int;
|
||||
|
||||
@ -2839,7 +2839,7 @@ The commands accepted in replication mode are:
|
||||
<para>
|
||||
Every sent transaction contains zero or more DML messages (Insert,
|
||||
Update, Delete). In case of a cascaded setup it can also contain Origin
|
||||
messages. The origin message indicated that the transaction originated on
|
||||
messages. The origin message indicates that the transaction originated on
|
||||
different replication node. Since a replication node in the scope of logical
|
||||
replication protocol can be pretty much anything, the only identifier
|
||||
is the origin name. It's downstream's responsibility to handle this as
|
||||
|
||||
@ -38,7 +38,7 @@ SELECT [ ALL | DISTINCT [ ON ( <replaceable class="parameter">expression</replac
|
||||
[ FROM <replaceable class="parameter">from_item</replaceable> [, ...] ]
|
||||
[ WHERE <replaceable class="parameter">condition</replaceable> ]
|
||||
[ GROUP BY <replaceable class="parameter">grouping_element</replaceable> [, ...] ]
|
||||
[ HAVING <replaceable class="parameter">condition</replaceable> [, ...] ]
|
||||
[ HAVING <replaceable class="parameter">condition</replaceable> ]
|
||||
[ WINDOW <replaceable class="parameter">window_name</replaceable> AS ( <replaceable class="parameter">window_definition</replaceable> ) [, ...] ]
|
||||
[ { UNION | INTERSECT | EXCEPT } [ ALL | DISTINCT ] <replaceable class="parameter">select</replaceable> ]
|
||||
[ ORDER BY <replaceable class="parameter">expression</replaceable> [ ASC | DESC | USING <replaceable class="parameter">operator</replaceable> ] [ NULLS { FIRST | LAST } ] [, ...] ]
|
||||
|
||||
@ -28,7 +28,7 @@ SELECT [ ALL | DISTINCT [ ON ( <replaceable class="parameter">expression</replac
|
||||
[ FROM <replaceable class="parameter">from_item</replaceable> [, ...] ]
|
||||
[ WHERE <replaceable class="parameter">condition</replaceable> ]
|
||||
[ GROUP BY <replaceable class="parameter">expression</replaceable> [, ...] ]
|
||||
[ HAVING <replaceable class="parameter">condition</replaceable> [, ...] ]
|
||||
[ HAVING <replaceable class="parameter">condition</replaceable> ]
|
||||
[ WINDOW <replaceable class="parameter">window_name</replaceable> AS ( <replaceable class="parameter">window_definition</replaceable> ) [, ...] ]
|
||||
[ { UNION | INTERSECT | EXCEPT } [ ALL | DISTINCT ] <replaceable class="parameter">select</replaceable> ]
|
||||
[ ORDER BY <replaceable class="parameter">expression</replaceable> [ ASC | DESC | USING <replaceable class="parameter">operator</replaceable> ] [ NULLS { FIRST | LAST } ] [, ...] ]
|
||||
|
||||
@ -769,7 +769,7 @@ SELECT t1.a, t2.b, t1.ctid FROM t1, t2 WHERE t1.a = t2.a;
|
||||
</para>
|
||||
|
||||
<para>
|
||||
The benefit of implementing views with the rule system is,
|
||||
The benefit of implementing views with the rule system is
|
||||
that the planner has all
|
||||
the information about which tables have to be scanned plus the
|
||||
relationships between these tables plus the restrictive
|
||||
@ -781,7 +781,7 @@ SELECT t1.a, t2.b, t1.ctid FROM t1, t2 WHERE t1.a = t2.a;
|
||||
the best path to execute the query, and the more information
|
||||
the planner has, the better this decision can be. And
|
||||
the rule system as implemented in <productname>PostgreSQL</productname>
|
||||
ensures, that this is all information available about the query
|
||||
ensures that this is all information available about the query
|
||||
up to that point.
|
||||
</para>
|
||||
</sect2>
|
||||
@ -2087,7 +2087,7 @@ CREATE FUNCTION tricky(text, text) RETURNS bool AS $$
|
||||
BEGIN
|
||||
RAISE NOTICE '% => %', $1, $2;
|
||||
RETURN true;
|
||||
END
|
||||
END;
|
||||
$$ LANGUAGE plpgsql COST 0.0000000000000000000001;
|
||||
|
||||
SELECT * FROM phone_number WHERE tricky(person, phone);
|
||||
|
||||
@ -205,8 +205,8 @@ test=> select '6.25 .. 6.50'::seg as "pH";
|
||||
</table>
|
||||
|
||||
<para>
|
||||
Because <literal>...</literal> is widely used in data sources, it is allowed
|
||||
as an alternative spelling of <literal>..</literal>. Unfortunately, this
|
||||
Because the <literal>...</literal> operator is widely used in data sources, it is allowed
|
||||
as an alternative spelling of the <literal>..</literal> operator. Unfortunately, this
|
||||
creates a parsing ambiguity: it is not clear whether the upper bound
|
||||
in <literal>0...23</literal> is meant to be <literal>23</literal> or <literal>0.23</literal>.
|
||||
This is resolved by requiring at least one digit before the decimal
|
||||
|
||||
@ -2419,7 +2419,7 @@ ALTER TEXT SEARCH CONFIGURATION astro_en
|
||||
positions in <type>tsvector</type>, which in turn affect ranking:
|
||||
|
||||
<screen>
|
||||
SELECT to_tsvector('english','in the list of stop words');
|
||||
SELECT to_tsvector('english', 'in the list of stop words');
|
||||
to_tsvector
|
||||
----------------------------
|
||||
'list':3 'stop':5 'word':6
|
||||
@ -2429,12 +2429,12 @@ SELECT to_tsvector('english','in the list of stop words');
|
||||
calculated for documents with and without stop words are quite different:
|
||||
|
||||
<screen>
|
||||
SELECT ts_rank_cd (to_tsvector('english','in the list of stop words'), to_tsquery('list & stop'));
|
||||
SELECT ts_rank_cd (to_tsvector('english', 'in the list of stop words'), to_tsquery('list & stop'));
|
||||
ts_rank_cd
|
||||
------------
|
||||
0.05
|
||||
|
||||
SELECT ts_rank_cd (to_tsvector('english','list stop words'), to_tsquery('list & stop'));
|
||||
SELECT ts_rank_cd (to_tsvector('english', 'list stop words'), to_tsquery('list & stop'));
|
||||
ts_rank_cd
|
||||
------------
|
||||
0.1
|
||||
@ -2493,12 +2493,12 @@ CREATE TEXT SEARCH DICTIONARY public.simple_dict (
|
||||
Now we can test our dictionary:
|
||||
|
||||
<screen>
|
||||
SELECT ts_lexize('public.simple_dict','YeS');
|
||||
SELECT ts_lexize('public.simple_dict', 'YeS');
|
||||
ts_lexize
|
||||
-----------
|
||||
{yes}
|
||||
|
||||
SELECT ts_lexize('public.simple_dict','The');
|
||||
SELECT ts_lexize('public.simple_dict', 'The');
|
||||
ts_lexize
|
||||
-----------
|
||||
{}
|
||||
@ -2514,12 +2514,12 @@ SELECT ts_lexize('public.simple_dict','The');
|
||||
<screen>
|
||||
ALTER TEXT SEARCH DICTIONARY public.simple_dict ( Accept = false );
|
||||
|
||||
SELECT ts_lexize('public.simple_dict','YeS');
|
||||
SELECT ts_lexize('public.simple_dict', 'YeS');
|
||||
ts_lexize
|
||||
-----------
|
||||
|
||||
|
||||
SELECT ts_lexize('public.simple_dict','The');
|
||||
SELECT ts_lexize('public.simple_dict', 'The');
|
||||
ts_lexize
|
||||
-----------
|
||||
{}
|
||||
@ -2633,7 +2633,7 @@ indices index*
|
||||
Then we will get these results:
|
||||
<screen>
|
||||
mydb=# CREATE TEXT SEARCH DICTIONARY syn (template=synonym, synonyms='synonym_sample');
|
||||
mydb=# SELECT ts_lexize('syn','indices');
|
||||
mydb=# SELECT ts_lexize('syn', 'indices');
|
||||
ts_lexize
|
||||
-----------
|
||||
{index}
|
||||
@ -2641,13 +2641,13 @@ mydb=# SELECT ts_lexize('syn','indices');
|
||||
|
||||
mydb=# CREATE TEXT SEARCH CONFIGURATION tst (copy=simple);
|
||||
mydb=# ALTER TEXT SEARCH CONFIGURATION tst ALTER MAPPING FOR asciiword WITH syn;
|
||||
mydb=# SELECT to_tsvector('tst','indices');
|
||||
mydb=# SELECT to_tsvector('tst', 'indices');
|
||||
to_tsvector
|
||||
-------------
|
||||
'index':1
|
||||
(1 row)
|
||||
|
||||
mydb=# SELECT to_tsquery('tst','indices');
|
||||
mydb=# SELECT to_tsquery('tst', 'indices');
|
||||
to_tsquery
|
||||
------------
|
||||
'index':*
|
||||
@ -2659,7 +2659,7 @@ mydb=# SELECT 'indexes are very useful'::tsvector;
|
||||
'are' 'indexes' 'useful' 'very'
|
||||
(1 row)
|
||||
|
||||
mydb=# SELECT 'indexes are very useful'::tsvector @@ to_tsquery('tst','indices');
|
||||
mydb=# SELECT 'indexes are very useful'::tsvector @@ to_tsquery('tst', 'indices');
|
||||
?column?
|
||||
----------
|
||||
t
|
||||
@ -3354,7 +3354,7 @@ ts_debug(<optional> <replaceable class="parameter">config</replaceable> <type>re
|
||||
Here is a simple example:
|
||||
|
||||
<screen>
|
||||
SELECT * FROM ts_debug('english','a fat cat sat on a mat - it ate a fat rats');
|
||||
SELECT * FROM ts_debug('english', 'a fat cat sat on a mat - it ate a fat rats');
|
||||
alias | description | token | dictionaries | dictionary | lexemes
|
||||
-----------+-----------------+-------+----------------+--------------+---------
|
||||
asciiword | Word, all ASCII | a | {english_stem} | english_stem | {}
|
||||
@ -3405,7 +3405,7 @@ ALTER TEXT SEARCH CONFIGURATION public.english
|
||||
</programlisting>
|
||||
|
||||
<screen>
|
||||
SELECT * FROM ts_debug('public.english','The Brightest supernovaes');
|
||||
SELECT * FROM ts_debug('public.english', 'The Brightest supernovaes');
|
||||
alias | description | token | dictionaries | dictionary | lexemes
|
||||
-----------+-----------------+-------------+-------------------------------+----------------+-------------
|
||||
asciiword | Word, all ASCII | The | {english_ispell,english_stem} | english_ispell | {}
|
||||
@ -3444,7 +3444,7 @@ SELECT * FROM ts_debug('public.english','The Brightest supernovaes');
|
||||
|
||||
<screen>
|
||||
SELECT alias, token, dictionary, lexemes
|
||||
FROM ts_debug('public.english','The Brightest supernovaes');
|
||||
FROM ts_debug('public.english', 'The Brightest supernovaes');
|
||||
alias | token | dictionary | lexemes
|
||||
-----------+-------------+----------------+-------------
|
||||
asciiword | The | english_ispell | {}
|
||||
@ -3592,7 +3592,7 @@ SELECT ts_lexize('english_stem', 'a');
|
||||
where this can be confusing:
|
||||
|
||||
<screen>
|
||||
SELECT ts_lexize('thesaurus_astro','supernovae stars') is null;
|
||||
SELECT ts_lexize('thesaurus_astro', 'supernovae stars') is null;
|
||||
?column?
|
||||
----------
|
||||
t
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user