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Mikuana/wide-to-tall.sql

Created October 17, 2016 20:15
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wide-to-tall.sql
SELECT
dept_id AS dept_id
, 1 AS hours_id
, hours1 AS hours
FROM
hours_table t
WHERE
hours1 IS NOT NULL
UNION ALL
SELECT
dept_id AS dept_id
, 2 AS hours_id
, hours2 AS hours
FROM
hours_table t
WHERE
hours2 IS NOT NULL
/* ... repeat a whole bunch */
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