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d, t, and ts for date and time literals DBMSs differ in the syntax they use for date, time, and timestamp literals. The JDBC API supports ISO standard format for the syntax of these literals, using an escape clause that the driver must translate to the DBMS representation. For example, a date is specified in a JDBC SQL statement with the following syntax:
{d 'yyyy-mm-dd'}
In this syntax, yyyy is the year, mm is the month, and dd is the day. The driver will replace the escape clause with the equivalent DBMS-specific representation. For example, the driver might replace {d 1999-02-28} with '28-FEB-99' if that is the appropriate format for the underlying database. There are analogous escape clauses for TIME and TIMESTAMP:
{t 'hh:mm:ss'}
{ts 'yyyy-mm-dd hh:mm:ss.f . . .'}
The fractional seconds (.f . . .) portion of the TIMESTAMP can be omitted.