HiRDB database has equivalents Extract function with YEAR, MONTH, DAY, HOUR, MINUTE, SECOND. SQLWays changes it.

Oracle:

select extract (YEAR from c1),
extract (MONTH from c1),
extract (DAY from c1),
extract (HOUR from c1) ,
extract (MINUTE from c1),
extract (SECOND from c1) from t;

HiRDB:

select YEAR(c1) ,
MONTH(c1),
DAY(c1),
HOUR(c1) ,
MINUTE(c1) ,
SECOND(c1) from t;

HiRDB hasn't equivalents for Extract function with TIMEZONE_HOUR, TIMEZONE_MINUTE, TIMEZONE_REGION, TIMEZONE_ABBR. SQLWays leaves it as is and adds message /* SQLWays: Could not convert 'extract' */.

Oracle:

select extract (TIMEZONE_HOUR from c1) from t; 

HiRDB:

select extract(TIMEZONE_HOUR from c1) from t;
/* Сould not convert 'extract ' */