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We created this handy cheat sheet for SQL date and time functions across some of our most popular databases: PostgreSQL, MySQL, Redshift, Snowflake, and BigQuery.
1 cze 2021 · DATEPART(part, date) function. Try out the interactive Standard SQL Functions course at LearnSQL.com, and check out our other SQL courses. TIME ZONES. In the SQL Standard, the date type can't have an associated time zone, but the time and timestamp types can.
DATE_ADD(date,INTERVAL expr unit), DATE_SUB(date,INTERVAL expr unit) These functions perform date arithmetic. date is a DATETIME or DATE value specifying the starting date. expr is an expression specifying the interval value to be added or subtracted from the
1 cze 2021 · DATE AND TIME. There are 3 main time-related types: date, time, and timestamp. Time is expressed using a 24-hour clock, and it can be as vague as just hour and minutes (e.g., 15:30 – 3:30 p.m.) or as precise as microseconds and time zone (as shown below): 2021-12-31
Create a Function CREATE FUNCTION name (@variable datatype(length)) RETURNS datatype(length) AS BEGIN DECLARE @return datatype(length) SELECT @return = CASE @variable WHEN ’a’ THEN ’return a’ WHEN ’b’ THEN ’return b’ ELSE ’return c’ RETURN @return END
1 cze 2021 · DATE AND TIME. There are 3 main time-related types: date, time, and timestamp. Time is expressed using a 24-hour clock, and it can be as vague as just hour and minutes (e.g., 15:30 – 3:30 p.m.) or as precise as microseconds and time zone (as shown below): 20 21-12-31 14:39:53.662522-05
SQL Working with Dates. Look at the following table: Orders Table. Now we want to select the records with an OrderDate of "2008-11-11" from the table above. We use the following SELECT statement: SELECT * FROM Orders WHERE OrderDate= '2008-11-11' The result-set will look like this:
