Максим Кита Старший разработчик ClickHouse C++ zero-cost abstractions на примере хеш-таблиц в ClickHouse Введение в хеш-таблицы Содержание 01 Основные вопросы дизайна 02 Бенчмарки 03 C++ дизайн

PRECISION NOT NULL, b DOUBLE PRECISION NOT NULL, c DOUBLE PRECISION NOT NULL, CONSTRAINT chk_a_not_zero CHECK (a <> 0) ) В зависимости от значений коэффициентов a, b и c, каждое value out of range.'; WHEN SQLSTATE '22012' DO EXCEPTION E_CUSTOM_EXCEPTION 'Division by zero.'; WHEN SQLSTATE '23000' DO EXCEPTION E_CUSTOM_EXCEPTION 'Integrity constraint not revoked Привилегии не отозваны 1007 Privilege not granted Привилегии не выданы 1008 Implicit zero-bit padding Неявное обрезание нулевого бита 1100 Statement reset to unprepared Оператор сброшен в

diagrams are also supported. 20.1 Information Engineering Relations Type Symbol Zero or One |o-- Exactly One ||-- Zero or Many }o-- One or Many }|-- Examples: @startuml Entity01 }|..|| Entity02 Entity03

diagrams are also supported. 19.1 Information Engineering Relations Type Symbol Zero or One |o-- Exactly One ||-- Zero or Many }o-- One or Many }|-- Examples: @startuml Entity01 }|..|| Entity02 Entity03

diagrams are also supported. 20.1 Information Engineering Relations Type Symbol Zero or One |o-- Exactly One ||-- Zero or Many }o-- One or Many }|-- Examples: @startuml Entity01 }|..|| Entity02 Entity03

diagrams are also supported. 20.1 Information Engineering Relations Type Symbol Zero or One |o-- Exactly One ||-- Zero or Many }o-- One or Many }|-- Examples: @startuml Entity01 }|..|| Entity02 Entity03