This driver implements inherited function from JDatabase class and add some other useful function to be able to use Joomla! on PostgreSQL database.
There is also a class that inherits from JDatabaseQuery to be able to create query object using PostgreSQL dialect.

PostgreSQL's added functions:

• dropTable, drops given table
• getRandom, ge a random number
• getStringPositionSQL, returns string's position inside another string
• releaseTransactionSavepoint, release given savepoint during transaction
• renameTable, rename given table
• showTables, lists all table in database

Overridden functions:

• connected
• escape
• explain
• fetchArray
• fetchAssoc
• fetchObject
• freeResult
• getAffectedRows
• getAlterDbCharacterSet
• getCollation
• getCreateDbQuery
• getNumRows
• getQuery
• getTableColumns
• getTableCreate
• getTableKeys
• getTableList
• getVersion
• hasUTF
• insertid
• query
• queryBatch
• replacePrefix
• select
• setUTF
• transactionCommit
• transactionRollback
• transactionSavepoint
• transactionStart

PostgreSQL database query added functions:

• limit, a possible replace for limit in setQuery
• offset, a possible replace for limit in setQuery
• forShare, lock table/row during SELECT
• forUpdate, lock table/row during SELECT
• noWait, no wait a locked table
• returning, an INSERT INTO optional clause to returns last insert id