SELECT EXTRACT(EPOCH FROM TIMESTAMP WITH TIME ZONE '2001-02-16 20:38:40-08'); Result: 982384720 SELECT EXTRACT(EPOCH FROM INTERVAL '5 days 3 hours'); Result: 442800 Here is how you can convert an epoch value back to a time stamp: SELECT TIMESTAMP WITH TIME ZONE 'epoch' + 982384720...
SELECT EXTRACT(EPOCH FROM TIMESTAMP WITH TIME ZONE '2001-02-16 20:38:40-08'); Result: 982384720 SELECT EXTRACT(EPOCH FROM INTERVAL '5 days 3 hours'); Result: 442800 1. Here is how you can convert an epoch value back to a time stamp: SELECT TIMESTAMP WITH TIME ZONE 'epoch' + 9823...
least (end_at, start_at::date + '22:00'::time) - greatest(start_at, start_at::date + '14:00'::time)) / 3600 second_shift, extract ('epoch' from least (end_at, start_at::date + 1 + '06:00'::time) - greatest(start_at, start_at::date + '22:00'::time)) / 3600 t...
Convert DB2 timestamp to SQL Server datetime. convert epoch timestamp to datetime field when importing using ssis into sql server... how? Convert from DT_WSTR to DT_DBDATE Convert mm/dd/yyyy format to yyyymmdd in SSIS expressions Convert Multiple Tab Files Excel to CSV file Convert SSIS Da...
If the timestamp is displayed in Unix Epoch time, you can convert it to a user-friendly format: kubectl logs-n<NAMESPACE><CLUSTER>-<N>|\jq-r'select(.logger=="postgres") | [(.ts|strflocaltime("%Y-%m-%dT%H:%M:%S %Z")), .record.message] | @csv' ...
PostgreSQL has lots of nice date time functions to perform these great feats. Lets say someone handed us a unix timestamp of the form 1195374767. We can convert it to a real date time simply by doing this:SELECT TIMESTAMP 'epoch' + 1195374767 * INTERVAL '1 second'. ...
SELECT cp_simpleupdate(1, 'set to this'); --Here is a simple example to simulate the MySQL 5.0 function CREATE OR REPLACE FUNCTION from_unixtime(unixts integer) RETURNS timestamp without time zone AS $BODY$SELECT CAST('epoch' As timestamp) + ($1 * INTERVAL '1 second') $BODY$ ...
sc_from_julian: Converts a Julian date to epoch timestamp. sc_to_days: Calculates the number of days since '2020-01-01 12:00:00 UTC'. sc_right_ascension: Calculates the right ascension for a given longitude and latitude. sc_declination: Calculates the declination for a given longitude an...
Cast timestamp fields to::textin PostgreSQL and then convert them usingas.POSIXct()manually in R useRPostgreSQL()instead ... but its slower. I'll dig in to your code a little later and see if I can find it on the R side, but if its in C, I'm pretty useless to help. ...
并不是说满max_wal_size才会产生检查点,而是看CheckPointSegments(ConvertToXSegs(max_wal_size_mb, wal_segment_size)/(1.0 + CheckPointCompletionTarget))参数,因为做检查点也需要消费一些wal日志,XLogWrite时通过XLogCheckpointNeeded检查是否需要触发检查点。3.min_wal_size:只要WAL日志的磁盘用量保持在这个设置之下...