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/* toDateTime or toString or other functions which should call the toMinute() function will all meet this bug. tests below will verify the toDateTime and toString. */
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SELECT ' Check the bug causing situation: the special Australia/Lord_Howe time zone. toDateTime and toString functions are all tested at once ' ;
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SELECT toUnixTimestamp ( x ) as tt , ( toDateTime ( ' 2019-04-07 01:00:00 ' , ' Australia/Lord_Howe ' ) + INTERVAL number * 600 SECOND ) AS x , toString ( x ) as xx FROM numbers ( 20 ) ;
/* The Batch Part. Test period is whole 4 days */
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SELECT ' 4 days test in batch comparing with manually computation result for Asia/Istanbul whose timezone epoc is of whole hour: ' ;
SELECT toUnixTimestamp ( x ) as tt , ( toDateTime ( ' 1981-04-01 00:00:00 ' , ' Asia/Istanbul ' ) + INTERVAL number * 600 SECOND ) AS x , timezoneOffset ( x ) as res , ( toDateTime ( toString ( x ) , ' UTC ' ) - x ) AS calc FROM numbers ( 576 ) where res ! = calc ;
SELECT toUnixTimestamp ( x ) as tt , ( toDateTime ( ' 1981-09-30 00:00:00 ' , ' Asia/Istanbul ' ) + INTERVAL number * 600 SECOND ) AS x , timezoneOffset ( x ) as res , ( toDateTime ( toString ( x ) , ' UTC ' ) - x ) AS calc FROM numbers ( 576 ) where res ! = calc ;
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SELECT ' 4 days test in batch comparing with manually computation result for Asia/Tehran whose timezone epoc is of half hour: ' ;
SELECT toUnixTimestamp ( x ) as tt , ( toDateTime ( ' 2020-03-21 00:00:00 ' , ' Asia/Tehran ' ) + INTERVAL number * 600 SECOND ) AS x , timezoneOffset ( x ) as res , ( toDateTime ( toString ( x ) , ' UTC ' ) - x ) AS calc FROM numbers ( 576 ) where res ! = calc ;
SELECT toUnixTimestamp ( x ) as tt , ( toDateTime ( ' 2020-09-20 00:00:00 ' , ' Asia/Tehran ' ) + INTERVAL number * 600 SECOND ) AS x , timezoneOffset ( x ) as res , ( toDateTime ( toString ( x ) , ' UTC ' ) - x ) AS calc FROM numbers ( 576 ) where res ! = calc ;
SELECT ' 4 days test in batch comparing with manually computation result for Australia/Lord_Howe whose timezone epoc is of half hour and also its DST offset is half hour: ' ;
SELECT toUnixTimestamp ( x ) as tt , ( toDateTime ( ' 2020-10-04 01:40:00 ' , ' Australia/Lord_Howe ' ) + INTERVAL number * 600 SECOND ) AS x , timezoneOffset ( x ) as res , ( toDateTime ( toString ( x ) , ' UTC ' ) - x ) AS calc FROM numbers ( 576 ) where res ! = calc ;
SELECT toUnixTimestamp ( x ) as tt , ( toDateTime ( ' 2019-04-07 01:00:00 ' , ' Australia/Lord_Howe ' ) + INTERVAL number * 600 SECOND ) AS x , timezoneOffset ( x ) as res , ( toDateTime ( toString ( x ) , ' UTC ' ) - x ) AS calc FROM numbers ( 576 ) where res ! = calc ;
