diff options
Diffstat (limited to 'sqlglot/dialects/oracle.py')
| -rw-r--r-- | sqlglot/dialects/oracle.py | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/sqlglot/dialects/oracle.py b/sqlglot/dialects/oracle.py index 91e30b2..8041ff0 100644 --- a/sqlglot/dialects/oracle.py +++ b/sqlglot/dialects/oracle.py @@ -10,6 +10,32 @@ def _limit_sql(self, expression): class Oracle(Dialect): + # https://docs.oracle.com/database/121/SQLRF/sql_elements004.htm#SQLRF00212 + # https://docs.python.org/3/library/datetime.html#strftime-and-strptime-format-codes + time_mapping = { + "AM": "%p", # Meridian indicator with or without periods + "A.M.": "%p", # Meridian indicator with or without periods + "PM": "%p", # Meridian indicator with or without periods + "P.M.": "%p", # Meridian indicator with or without periods + "D": "%u", # Day of week (1-7) + "DAY": "%A", # name of day + "DD": "%d", # day of month (1-31) + "DDD": "%j", # day of year (1-366) + "DY": "%a", # abbreviated name of day + "HH": "%I", # Hour of day (1-12) + "HH12": "%I", # alias for HH + "HH24": "%H", # Hour of day (0-23) + "IW": "%V", # Calendar week of year (1-52 or 1-53), as defined by the ISO 8601 standard + "MI": "%M", # Minute (0-59) + "MM": "%m", # Month (01-12; January = 01) + "MON": "%b", # Abbreviated name of month + "MONTH": "%B", # Name of month + "SS": "%S", # Second (0-59) + "WW": "%W", # Week of year (1-53) + "YY": "%y", # 15 + "YYYY": "%Y", # 2015 + } + class Generator(Generator): TYPE_MAPPING = { **Generator.TYPE_MAPPING, @@ -30,6 +56,9 @@ class Oracle(Dialect): **transforms.UNALIAS_GROUP, exp.ILike: no_ilike_sql, exp.Limit: _limit_sql, + exp.StrToTime: lambda self, e: f"TO_TIMESTAMP({self.sql(e, 'this')}, {self.format_time(e)})", + exp.TimeToStr: lambda self, e: f"TO_CHAR({self.sql(e, 'this')}, {self.format_time(e)})", + exp.UnixToTime: lambda self, e: f"TO_DATE('1970-01-01','YYYY-MM-DD') + ({self.sql(e, 'this')} / 86400)", } def query_modifiers(self, expression, *sqls): |