prompt 中一些特殊的转义字符串
OptionDescription
/cA counter that increments for each statement you issue
/DThe full current date
/dThe default database
/hThe server host
/lThe current delimiter (new in 5.1.12)
/mMinutes of the current time
/nA newline character
/OThe current month in three-letter format (Jan, Feb, …)
/oThe current month in numeric format
/Pam/pm
/pThe current TCP/IP port or socket file
/RThe current time, in 24-hour military time (0–23)
/rThe current time, standard 12-hour time (1–12)
/SSemicolon
/sSeconds of the current time
/tA tab character
/U
Your full user_name@host_name account name
/uYour user name
/vThe server version
/wThe current day of the week in three-letter format (Mon, Tue, …)
/YThe current year, four digits
/yThe current year, two digits
/_A space
/ A space (a space follows the backslash)
/'Single quote
/"Double quote
//A literal “/” backslash character
/x
x, for any “x” not listed above
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