Вчерашний запрос, "заморозивший" миграцию на три часа:
SELECT entity_id, MAX(start_date), MAX(end_date) FROM ( SELECT entity_id, MAX(start_date) start_date, NULL AS end_date FROM audit_log WHERE attr = 'reviewed' AND newValue = 'true' GROUP BY entity_id UNION ALL SELECT entity_id, NULL AS start_date, MAX(end_date) end_date FROM audit_log WHERE attr = 'overriden' AND newValue = 'true' GROUP BY entity_id ) a GROUP BY entity_id;
можно было бы написать сильно оптимальнее вот так:
SELECT entity_id, MAX(if(attr = 'reviewed', NULL, start_date)) AS start_date, MAX(if(attr = 'reviewed', end_date, NULL)) end_date FROM audit_log WHERE (attr = 'reviewed' OR attr='overriden') AND newValue = 'true' GROUP BY entity_id;
При сильно похожих WHERE в таких конструкциях, удобнее схлопнуть UNION и "на лету" подставлять в SELECT нужное значение через if.
Вчерашний запрос, "заморозивший" миграцию на три часа:
SELECT entity_id, MAX(start_date), MAX(end_date) FROM ( SELECT entity_id, MAX(start_date) start_date, NULL AS end_date FROM audit_log WHERE attr = 'reviewed' AND newValue = 'true' GROUP BY entity_id UNION ALL SELECT entity_id, NULL AS start_date, MAX(end_date) end_date FROM audit_log WHERE attr = 'overriden' AND newValue = 'true' GROUP BY entity_id ) a GROUP BY entity_id;
можно было бы написать сильно оптимальнее вот так:
SELECT entity_id, MAX(if(attr = 'reviewed', NULL, start_date)) AS start_date, MAX(if(attr = 'reviewed', end_date, NULL)) end_date FROM audit_log WHERE (attr = 'reviewed' OR attr='overriden') AND newValue = 'true' GROUP BY entity_id;
При сильно похожих WHERE в таких конструкциях, удобнее схлопнуть UNION и "на лету" подставлять в SELECT нужное значение через if.
BY Developer's mind
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That growth environment will include rising inflation and interest rates. Those upward shifts naturally accompany healthy growth periods as the demand for resources, products and services rise. Importantly, the Federal Reserve has laid out the rationale for not interfering with that natural growth transition.It's not exactly a fad, but there is a widespread willingness to pay up for a growth story. Classic fundamental analysis takes a back seat. Even negative earnings are ignored. In fact, positive earnings seem to be a limiting measure, producing the question, "Is that all you've got?" The preference is a vision of untold riches when the exciting story plays out as expected.
The lead from Wall Street offers little clarity as the major averages opened lower on Friday and then bounced back and forth across the unchanged line, finally finishing mixed and little changed.The Dow added 33.18 points or 0.10 percent to finish at 34,798.00, while the NASDAQ eased 4.54 points or 0.03 percent to close at 15,047.70 and the S&P 500 rose 6.50 points or 0.15 percent to end at 4,455.48. For the week, the Dow rose 0.6 percent, the NASDAQ added 0.1 percent and the S&P gained 0.5 percent.The lackluster performance on Wall Street came on uncertainty about the outlook for the markets following recent volatility.
