PostgreSQL as a Schemaless Database.
PostgreSQL as a Schemaless Database.
PostgreSQL as a Schemaless Database.
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CREATE OR REPLACE FUNCTION<br />
get_json_key(structure JSON, key TEXT) RETURNS TEXT<br />
AS $get_json_key$<br />
var js_object = structure;<br />
if (typeof ej != 'object')<br />
return NULL;<br />
return JSON.stringify(js_object[key]);<br />
$get_json_key$<br />
IMMUTABLE STRICT LANGUAGE plv8;