Hi,
PostgreSQL 9.3 document in "Table 8-9" of "8.5. Date / Time Types", storage
size of the interval data type has 12 bytes.
However, the definition of "datatype/timestamp.h", size of the interval
data type was 16 bytes.
In addition, interval data type was 16 bytes even dump the results of the
table file.
"day" field to the interval data type is added in PostgreSQL 8.1, but do
not not been reflected in the document PostgreSQL at that time?
Regards.
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nuko yokohama