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podoc:number_of_location_references_sql_function

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podoc:number_of_location_references_sql_function [2007/04/12 16:25] Luudpodoc:number_of_location_references_sql_function [2007/04/23 14:31] (current) Luud
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-===== Database Sequence Description of "number_of_location_references" =====+===== Database Function Description of "number_of_location_references" =====
  
 === Name === === Name ===
Line 6: Line 6:
  
 === Description === === Description ===
 +
 +Counts the number of references to a particular location.
 +
 +Tentative (is this correct?): this represents the number of photos in the database captured at the specified location.
  
 === Purpose === === Purpose ===
 +
 +To retrieve the number of references to a particular location.
  
 === Schema === === Schema ===
  
-  create function number_of_location_references(integer) returns bigint +<code sql> 
-  as 'select count(photo.identifier) +create function number_of_location_references(integer) returns bigint 
-        from photo, location +as 'select count(photo.identifier) 
-       where photo.location=location.identifier +      from photo, location 
-         and location.identifier = $1' language 'sql';+     where photo.location=location.identifier 
 +       and location.identifier = $1' language 'sql'; 
 +</code>
  
 === Related tables === === Related tables ===
  
-=== Related indexes === +  * [[location sql table|location]] 
- +  * [[photo sql table|photo]]
-=== Related functions === +
- +
-=== Related views ===+
  
 === History === === History ===
Line 39: Line 44:
 = Version 2.5 = = Version 2.5 =
  
-  create function number_of_location_references(integer) returns bigint +<code sql> 
-  as 'select count(photo.identifier) +create function number_of_location_references(integer) returns bigint 
-        from photo, location +as 'select count(photo.identifier) 
-       where photo.location=location.identifier +      from photo, location 
-         and location.identifier = $1' language 'sql';+     where photo.location=location.identifier 
 +       and location.identifier = $1' language 'sql'; 
 +</code>
  
podoc/number_of_location_references_sql_function.1176395104.txt.gz · Last modified: 2007/04/12 16:25 by Luud