Semantic search

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Condition

Printout selection

Options

Parameters [+]

limit:

The maximum number of results to return

offset:

The offset of the first result

link:

Show values as links

headers:

Display the headers/property names

mainlabel:

The label to give to the main page name

intro:

The text to display before the query results, if there are any

outro:

The text to display after the query results, if there are any

searchlabel:

Text for continuing the search

default:

The text to display if there are no query results

class:

An additional CSS class to set for the table

transpose:

Display table headers vertically and results horizontally

sep:

The separator between results

Sort options

Delete

Add sorting condition

ResultCodeDebugExtra

To embed this query inline into a wiki page use the code below.

{{#ask: [[Category:Companies:CompanyContact]] [[Companies:postcode::SE1 8NW]]
 |?Companies:town
 |?Companies:county
 |?Has coordinates
 |format=table
 |limit=50
 |offset=1
 |sort=
 |order=asc
 |mainlabel=
}}

Results 2 – 16 previous 50 20 50 100 250 500 next 50

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Query log

{
    "query_string": "[[Category:Companies:CompanyContact]] [[Companies:postcode::SE1 8NW]]",
    "query_source": "SMWSQLStore",
    "query_time": "0.0072",
    "from_cache": false
}

SQLStore debug output

ASK Query

[[Category:Companies:CompanyContact]] [[Companies:postcode::SE1 8NW]]

SQL Query

SELECT DISTINCT
t0.smw_id AS id,
  t0.smw_title AS t,
  t0.smw_namespace AS ns,
  t0.smw_iw AS iw,
  t0.smw_subobject AS so,
  t0.smw_sortkey AS sortkey, t0.smw_sort
FROM
`smw_object_ids` AS t0
INNER JOIN
(`smw_fpt_inst` AS t2
INNER JOIN
`smw_di_wikipage` AS t4 ON t2.s_id=t4.s_id) ON t0.smw_id=t2.s_id
WHERE
(t2.o_id='518'
   AND (t4.p_id='523' AND t4.o_id='154730')
  )
  AND t0.smw_iw!=':smw'
  AND t0.smw_iw!=':smw-delete'
  AND t0.smw_iw!=':smw-redi'
ORDER BY
t0.smw_sort ASC
LIMIT
55
OFFSET
1

SQL Explain

ID	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t4	ref	s_id,o_id,p_id,s_id_2,s_id_3,o_id_2,o_id_3	o_id	5	const	16	Using where; Using temporary; Using filesort
1	SIMPLE	t2	ref	s_id,o_id,s_id_2,o_id_2	s_id	4	callto_wikidb.t4.s_id	1	Using where
1	SIMPLE	t0	eq_ref	PRIMARY,smw_id,smw_iw,smw_iw_2	PRIMARY	4	callto_wikidb.t4.s_id	1	Using where

Auxilliary Tables

No auxilliary tables used.

Query Metrics

Query-Size:3
Query-Depth:1

Errors and Warnings

None

	Companies:town	Has coordinates
01212301650	LONDON	52° 28' 47.34" N, 1° 54' 6.74" W
01223321195	LONDON	52° 11' 52.29" N, 0° 7' 45.10" E
01244311855	LONDON	53° 11' 23.60" N, 2° 53' 16.69" W
01618271890	LONDON	53° 28' 57.63" N, 2° 14' 42.85" W
01622882300	LONDON	51° 18' 5.21" N, 0° 29' 38.13" E
01865790744	LONDON	51° 45' 14.37" N, 1° 15' 48.01" W
01985212020	LONDON	51° 12' 50.73" N, 2° 11' 40.61" W
02070934445	LONDON	51° 30' 38.31" N, 0° 5' 48.51" W
02073245200	LONDON	51° 31' 25.64" N, 0° 5' 4.56" W
02074293333	LONDON	51° 30' 38.31" N, 0° 5' 48.51" W
02075353100	LONDON	51° 30' 23.83" N, 0° 6' 14.75" W
02076297411	LONDON	51° 30' 23.83" N, 0° 6' 14.75" W
02077356660	LONDON	51° 29' 34.50" N, 0° 7' 16.58" W
02086363000	LONDON	51° 30' 23.83" N, 0° 6' 14.75" W
02087635959	LONDON	51° 20' 14.76" N, 0° 6' 55.26" W