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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 30-28. 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 2003 |
| sql_language_comformance | 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. |
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