as the tile, it's a database? or what is it? can i use "select" command to query the data of template0? how should i explain the template0? -- View this message in context: http://www.nabble.com/template0%28or-template1%29-is--a-database--tp14906094p14906094.html Sent from the PostgreSQL - general mailing list archive at Nabble.com. ---------------------------(end of broadcast)--------------------------- TIP 9: In versions below 8.0, the planner will ignore your desire to choose an index scan if your joining column's datatypes do not match