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Ryan Hartigan
3,425 PointsWhy do we put the date range within parenthesis when we don't put numbers within parenthesis? Is this unique to MySQL?
It feels like you would not want these ranges within parentheses because they are functioning like numbers, and I recall seeing a Postgres script that forced dates into strings when they were placed with parentheses (correct me if I'm wrong). Is this something that is only used with MySQL and is there a reason why we place them for dates here?
Ryan Hartigan
3,425 PointsSteven Parker Maybe it was an answer that I submitted in parenthesis and it was marked correct
3 Answers
Steven Parker
231,261 PointsParentheses by themselves don't define a string. But when used for grouping, such as when placed around a string, they don't cause an error even if they are not needed.
Steven Parker
231,261 PointsI'm sure I don't know the syntax for every database engine that exists, but it's certainly not standard SQL for parentheses to define a string.
But show your exact code and and tell us what database you are using if you need a more accurate answer.
Ryan Hartigan
3,425 PointsSteven Parker but why would my answer still be correct if I had turned the date into a string by adding parenthesis around it?
Ryan Hartigan
3,425 PointsSteven Parker is this only with SQLite that parenthesis don't define a string?
Steven Parker
231,261 PointsSteven Parker
231,261 PointsWhere do you see parentheses used? I didn't see any in the video examples or the teacher's notes.