Reserved names
This page documents the preview (v2.21) version. Preview includes features under active development and is for development and testing only. For production, use the stable (v2024.1) version.
YSQL reserves the following names for internal usage. Exception will be raised when these names are used even when they are double-quoted.
| Names | Description |
|---|---|
oid |
System column |
tableoid |
System column |
xmin |
System column |
cmin |
System column |
xmax |
System column |
cmax |
System column |
ctid |
System column |
ybctid |
Virtual column |
Prefixed with pg_ |
System database objects |
Prefixed with yb_ |
System database objects |