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 32-28. 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 1999
sql_language_comformance
character_data
The standard conformance level for the language binding. For ISO 9075:1999 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.
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