Kexi/Plugins/Queries/SQL Constants

Common

Common notes:

{whitespace} means any non-empty combination of tabulators and spaces; new line character (\n) is not supported

Grammar - two versions:

#Syyyy-mm-dd#

#mm/dd/Syyyy#

Notes:

Both formats are not dependent on regional settings on the OS, they are always interpreted the same way
One or two digits are required for month and day, e.g. #2018-4-15# and #2018-04-1# are both valid dates
Years encoding is based on extended ISO 8601:
- At least four digits are required for year, e.g. #18-4-15# is invalid date
- If there are more than four digits, "+" prefix is required, e.g. #+123456-12-15#
- year >= 0001 means year of Anno Domini, limit is std::numeric_limits<int>::max()
- by convention 1 BC is labelled +0000 (unlike in QDate where 0 is invalid year)
- by convention 2 BC is labelled -0001, 3 BC is labelled -0002, etc. (unlike in QDate where 1 means 1 BC), limit is std::numeric_limits<quint64>::min()
MSA's format such as #24 Dec 2014# is not supported.
Detailed grammar of VBA for reference: https://msdn.microsoft.com/en-us/library/dn528865.aspx

Grammar - two versions:

#hh:nn:ss# 
#hh:nn:ss.mmm#

#hh:nn:ss{whitespace}AM# 
#hh:nn:ss{whitespace}PM# 
#hh:nn:ss.mmm{whitespace}AM# 
#hh:nn:ss.mmm{whitespace}PM#

#hh:nn#
#hh:nn.mmm#

#hh:nn{whitespace}AM#
#hh:nn{whitespace}PM#
#hh:nn.mmm{whitespace}AM#
#hh:nn.mmm{whitespace}PM#

Notes:

".mmm" stands for milliseconds: 1-3 digits, skip for zero milliseconds
At least one digit is required; e.g. both #05:59:01# and #5:59:1# are time literals that have the same value
{whitespace} before the AM or PM suffix is optional
AM/PM suffixes are case insensitive

Grammar:

#{date}{whitespace}{time}#

Where {date} is defined as for Date literals and {time} is defined as for Time literals.

Notes:

All notes regarding date and time format also apply to data and time parts of the value