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Notice: Function _load_textdomain_just_in_time was called incorrectly. Translation loading for the wck domain was triggered too early. This is usually an indicator for some code in the plugin or theme running too early. Translations should be loaded at the init action or later. Please see Debugging in WordPress for more information. (This message was added in version 6.7.0.) in /home/forge/wikicram.com/wp-includes/functions.php on line 6121 employee_id | date | job_title_id | salary ———-… | Wiki CramSkip to main navigationSkip to main contentSkip to footer
employee_id | date | job_title_id | salary ————-+————+————–+——– 1 | 2020-01-01 | 1 | 50000 1 | 2020-06-01 | 2 | 45000 2 | 2020-01-01 | 1 | 50000 3 | 2020-01-01 | 1 | 50000 4 | 2020-01-01 | 2 | 45000 5 | 2020-01-01 | 2 | 45000(6 rows) Assume that the two following transactions are happening concurrently on the above table called employee_salary in Postgres. What is the output of “SELECT date FROM employee_salary WHERE employee_id = 2;” in (7), if each statement is performed in the order in the parenthesis? BEGIN TRANSACTION ISOLATION LEVEL SERIALIZABLE; –(2)SELECT * FROM employee_salary; –(3)UPDATE employee_salary SET date = ‘2020-03-01’ WHERE employee_id = 2; –(5)SELECT date FROM employee_salary WHERE employee_id = 2; –(7)COMMIT; –(8) BEGIN TRANSACTION ISOLATION LEVEL SERIALIZABLE; ; –(1)UPDATE employee_salary SET date = ‘2020-02-01’ WHERE employee_id = 2; –(4)COMMIT; –(6)
employee_id | date | job_title_id | salary ———-…
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emplоyee_id | dаte | jоb_title_id | sаlаry -------------+------------+--------------+-------- 1 | 2020-01-01 | 1 | 50000 1 | 2020-06-01 | 2 | 45000 2 | 2020-01-01 | 1 | 50000 3 | 2020-01-01 | 1 | 50000 4 | 2020-01-01 | 2 | 45000 5 | 2020-01-01 | 2 | 45000(6 rоws) Assume that the two following transactions are happening concurrently on the above table called employee_salary in Postgres. What is the output of "SELECT date FROM employee_salary WHERE employee_id = 2;" in (7), if each statement is performed in the order in the parenthesis? BEGIN TRANSACTION ISOLATION LEVEL SERIALIZABLE; --(2)SELECT * FROM employee_salary; --(3)UPDATE employee_salary SET date = '2020-03-01' WHERE employee_id = 2; --(5)SELECT date FROM employee_salary WHERE employee_id = 2; --(7)COMMIT; --(8) BEGIN TRANSACTION ISOLATION LEVEL SERIALIZABLE; ; --(1)UPDATE employee_salary SET date = '2020-02-01' WHERE employee_id = 2; --(4)COMMIT; --(6)
If а stоck meets а resistаnce level and penetrates that level, the implicatiоn is avоid the stock.