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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Spiking bond yields driving sharp losses in tech stocks
A spike in interest rates since the start of the year has accelerated a rotation out of high-growth technology stocks and into value stocks poised to benefit from a reopening of the economy. The Nasdaq has fallen more than 10% over the past month as the Dow has soared to record highs, with a spike in the 10-year US Treasury yield acting as the main catalyst. It recently surged to a cycle high of more than 1.60% after starting the year below 1%. But according to Jim Paulsen, the Leuthold Group's chief investment strategist, rising interest rates do not represent a long-term threat to the stock market. Paulsen expects the 10-year yield to cross 2% by the end of the year.
A spike in interest rates and its impact on the stock market depends on the economic backdrop, according to Paulsen. Rising interest rates amid a strengthening economy "may prove no challenge at all for stocks," Paulsen said.
