What is the best way to escape non-format characters in Oracle's to_char?

问题

I am trying to print a date in a select statement, but I need to add a letter to the output:

to_char(date_updated, 'YYYY-MM-DDTHH:mm:ss')

Oracle does not like the T. I just want the T to be output like the colons and the dashes. Can I escape it with a backslash or something?

回答1:

You just need double-quotes around it:

to_char(date_updated, 'YYYY-MM-DD"T"HH:mm:ss')

来源：https://stackoverflow.com/questions/588430/what-is-the-best-way-to-escape-non-format-characters-in-oracles-to-char