Kexi/Plugins/Queries/SQL Constants

Date constants

(since 3.1.1, Bug #393094)

Grammar - two versions:

• ISO format (KEXI default, recommended)

#Syyyy-mm-dd#

• US format (for compatibility, based on MSA default [1])

#mm/dd/Syyyy#

• S means "-" or "+" or "", see below

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

Time constants

(since 3.1.1, Bug #393094)

Grammar - two versions:

• Full, 24h mode

#hh:nn:ss# 

• Full, 12h mode

#hh:nn:ss AM# 
#hh:nn:ss PM# 

• Short, 24h mode

#hh:nn#

• Short, 12h mode

#hh:nn AM#
#hh:nn PM#

Notes:

• At least one digit is required; e.g. both #05:59:01# and #5:59:1# are time literals that have the same value
• space before the AM or PM suffix is optional, if present exactly one is required
• AM/PM suffixes are case insensitive

Date/Time constants

(since 3.1.1, Bug #393094)

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