| From: | Kevin Grittner <kgrittn(at)ymail(dot)com> |
|---|---|
| To: | Florian Weimer <fweimer(at)redhat(dot)com>, Craig Ringer <craig(at)2ndquadrant(dot)com>, David Johnston <polobo(at)yahoo(dot)com>, "pgsql-general(at)postgresql(dot)org" <pgsql-general(at)postgresql(dot)org>, Merlin Göttlinger <megoettlinger(at)gmail(dot)com> |
| Subject: | Re: Re: PostgreSQL specific datatypes very confusing for beginners who use wrappers around JDBC |
| Date: | 2014-01-29 23:41:10 |
| Message-ID: | 1391038870.36107.YahooMailNeo@web122301.mail.ne1.yahoo.com |
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| Lists: | pgsql-general |
Florian Weimer <fweimer(at)redhat(dot)com> wrote:
> Can you use other JDBC drivers (except SQLite) to insert
> Java Strings into NUMERIC columns and Java ints into text
> columns?
The JDBC specification can be downloaded from here:
http://download.oracle.com/otndocs/jcp/jdbc-4_1-mrel-spec/index.html
Check out appendix B. According to the charts there, any of these
Java types (from table B-5):
String
java.math.BigDecimal
Boolean
Byte
Short
Integer
Long
Float
Double
should be assignable using setObject and setNull to these JDBC
target types:
TINYINT
SMALLINT
INTEGER
BIGINT
REAL
FLOAT
DOUBLE
DECIMAL
NUMERIC BIT
BOOLEAN
CHAR
VARCHAR
LONGVARCHAR
In addition (from the same table) String should be assignable to:
BINARY
VARBINARY
LONGVARBINARY
DATE
TIME
TIMESTAMP
So, it's at least partly a question of whether we want to conform
to the JDBC specification.
--
Kevin Grittner
EDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company
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