30th September 2021: PostgreSQL 14 Released!
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37.42. routine_routine_usage

The view routine_routine_usage is meant to identify all functions or procedures that are used by another (or the same) function or procedure, either in the body or in parameter default expressions. Currently, only functions used in parameter default expressions are tracked. An entry is included here only if the used function is owned by a currently enabled role. (There is no such restriction on the using function.)

Note that the entries for both functions in the view refer to the specific name of the routine, even though the column names are used in a way that is inconsistent with other information schema views about routines. This is per SQL standard, although it is arguably a misdesign. See Section 37.45 for more information about specific names.

Table 37.40. routine_routine_usage Columns

Column Type

Description

specific_catalog sql_identifier

Name of the database containing the using function (always the current database)

specific_schema sql_identifier

Name of the schema containing the using function

specific_name sql_identifier

The specific name of the using function.

routine_catalog sql_identifier

Name of the database that contains the function that is used by the first function (always the current database)

routine_schema sql_identifier

Name of the schema that contains the function that is used by the first function

routine_name sql_identifier

The specific name of the function that is used by the first function.


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