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php Programming Glossary: first_valueMerge a table and a change log into a view in PostgreSQL http://stackoverflow.com/questions/10109564/merge-a-table-and-a-change-log-into-a-view-in-postgresql values SELECT DISTINCT ON 1 2 c.unique_id a.attname AS col first_value c.value OVER PARTITION BY c.unique_id a.attname ORDER BY c.updated_at.. crosstab x SELECT DISTINCT ON 1 2 unique_id column_name first_value value OVER PARTITION BY unique_id column_name ORDER BY updated_at.. crosstab x SELECT DISTINCT ON 1 2 unique_id column_name first_value value OVER PARTITION BY unique_id column_name ORDER BY updated_at..
Get first key in a (possibly) associative array? http://stackoverflow.com/questions/1028668/get-first-key-in-a-possibly-associative-array the key to get the first value reset actually returns it first_value reset array There is one special case to watch out for though..
PHP - Mutidimensional array diff http://stackoverflow.com/questions/6026431/php-mutidimensional-array-diff foreach a1 as key first if isset a2 key foreach first as first_value foreach second as second_value if first_value second_value.. first as first_value foreach second as second_value if first_value second_value true true break if isset true r key first_value.. second_value true true break if isset true r key first_value unset true else r key first return r share improve..
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