Пока мы готовим серию постов про сортировку, предлагаем поразмять мозги над одной из задачек.
Перед вами план запроса, который создаёт таблицу с архивными данными продаж старше двух последних недель. На основании этого плана нужно понять, как ускорить запрос, не меняя при этом его текст.
Версия Oracle: 12.2.0.1 Структура индекса из 4 операции: SALE_DT, COSTUMER_ID, RETAILER_ID.
Predicate Information (identified by operation id): ---------------------------------------------------
4 - access("S"."SALE_DT"<=TRUNC(SYSDATE@!)-14)
Пишите в комментариях свои вопросы, идеи, предложения 👇🏻
Пока мы готовим серию постов про сортировку, предлагаем поразмять мозги над одной из задачек.
Перед вами план запроса, который создаёт таблицу с архивными данными продаж старше двух последних недель. На основании этого плана нужно понять, как ускорить запрос, не меняя при этом его текст.
Версия Oracle: 12.2.0.1 Структура индекса из 4 операции: SALE_DT, COSTUMER_ID, RETAILER_ID.
Predicate Information (identified by operation id): ---------------------------------------------------
4 - access("S"."SALE_DT"<=TRUNC(SYSDATE@!)-14)
Пишите в комментариях свои вопросы, идеи, предложения 👇🏻
That strategy is the acquisition of a value-priced company by a growth company. Using the growth company's higher-priced stock for the acquisition can produce outsized revenue and earnings growth. Even better is the use of cash, particularly in a growth period when financial aggressiveness is accepted and even positively viewed.he key public rationale behind this strategy is synergy - the 1+1=3 view. In many cases, synergy does occur and is valuable. However, in other cases, particularly as the strategy gains popularity, it doesn't. Joining two different organizations, workforces and cultures is a challenge. Simply putting two separate organizations together necessarily creates disruptions and conflicts that can undermine both operations.
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.
