32.34. `sql_languages`

The table sql_languages contains one row for each SQL language binding that is supported by PostgreSQL. PostgreSQL supports direct SQL and embedded SQL in C; that is all you will learn from this table.

Table 32-32. sql_languages Columns

Name	Data Type	Description
`sql_language_source`	`character_data`	The name of the source of the language definition; always `ISO 9075`, that is, the SQL standard
`sql_language_year`	`character_data`	The year the standard referenced in `sql_language_source` was approved; currently `2003`
`sql_language_conformance`	`character_data`	The standard conformance level for the language binding. For ISO 9075:2003 this is always `CORE`.
`sql_language_integrity`	`character_data`	Always null (This value is relevant to an earlier version of the SQL standard.)
`sql_language_implementation`	`character_data`	Always null
`sql_language_binding_style`	`character_data`	The language binding style, either `DIRECT` or `EMBEDDED`
`sql_language_programming_language`	`character_data`	The programming language, if the binding style is `EMBEDDED`, else null. PostgreSQL only supports the language C.