SYSTEM CATALOG · System catalog

pg_ts_dict

PostgreSQL documentation ↗Source definition ↗

The pg_ts_dict catalog contains entries defining text search dictionaries. A dictionary depends on a text search template, which specifies all the implementation functions needed; the dictionary itself provides values for the user-settable parameters supported by the template. This division of labor allows dictionaries to be created by unprivileged users. The parameters are specified by a text string dictinitoption, whose format and meaning vary depending on the template. PostgreSQL's text search features are described at length in Chapter 12.

First seen PG 9.0Last seen PG 19Columns 6

9.0 9.1 9.2 9.3 9.4 9.5 9.6 10 11 12 13 14 15 16 17 18 19^β3

Checked column by column against a PostgreSQL 18.6 instance · Raw measurement record ↗

Columns PostgreSQL 18

pg_ts_dict

COLUMN	TYPE	DESCRIPTION
`oid`	`oid`NOT NULL	Row identifier
`dictname`	`name`NOT NULL	Text search dictionary name
`dictnamespace`	`oid`NOT NULL	The OID of the namespace that contains this dictionaryReferences:`pg_namespace.oid`
`dictowner`	`oid`NOT NULL	Owner of the dictionaryReferences:`pg_authid.oid`
`dicttemplate`	`oid`NOT NULL	The OID of the text search template for this dictionaryReferences:`pg_ts_template.oid`
`dictinitoption`	`text`	Initialization option string for the template

Columns marked "implicit" are not included in SELECT *; some early statistics views are completed from same-version source, and the extra provenance is shown in the column description.

Common system columns 6

System attributes PostgreSQL provides, normally not expanded by SELECT *. Kept separately so they are not mixed in with ordinary columns.

Columns	Type	attnum
`tableoid`	`oid`	-6
`cmax`	`cid`	-5
`xmax`	`xid`	-4
`cmin`	`cid`	-3
`xmin`	`xid`	-2
`ctid`	`tid`	-1

Column evolution matrix

Hover a cell for the column type

PresentAdded / type or attribute changeRemoved

COLUMN	9.0	9.1	9.2	9.3	9.4	9.5	9.6	10	11	12	13	14	15	16	17	18	19
`oid`
`dictname`
`dictnamespace`
`dictowner`
`dicttemplate`
`dictinitoption`

9.0 is the coverage baseline; a column already present in the baseline is not marked as added. The matrix aligns columns by name, so a rename appears as the old column removed and a new column added.

Evolution timeline

Changes between adjacent majors

PostgreSQL 12 ← 11

~ oid: implicit → ordinary1 column description updates

PostgreSQL 9.3 ← 9.2

1 column description updates

Compare any two versions

FROMTOInclude description updates

Pick two versions to see added, removed, and retyped columns. The interactive comparison needs JavaScript; the evolution timeline reads fine without it.