Schema:

ACCOUNT_USAGE

TABLE_CONSTRAINTS view¶

This Account Usage view displays a row for each referential integrity constraint defined for the tables in the account.

For more information about referential integrity constraints, see Constraints.

See also:

REFERENTIAL_CONSTRAINTS view

Columns¶

Column Name

Data Type

Description

CONSTRAINT_ID

NUMBER

Internal/system-generated identifier for the constraint.

CONSTRAINT_NAME

TEXT

Name of the constraint.

CONSTRAINT_SCHEMA_ID

NUMBER

Internal/system-generated identifier for the schema of the constraint.

CONSTRAINT_SCHEMA

TEXT

Schema that the constraint belongs to.

CONSTRAINT_CATALOG_ID

NUMBER

Internal/system-generated identifier for the database of the constraint.

CONSTRAINT_CATALOG

TEXT

Database that the constraint belongs to.

TABLE_ID

NUMBER

Internal/system-generated identifier for the table that the constraint belongs to.

TABLE_NAME

TEXT

Name of the current table.

TABLE_SCHEMA_ID

NUMBER

Internal/system-generated identifier for the schema of the current table.

TABLE_SCHEMA

TEXT

Name of the schema for the current table.

TABLE_CATALOG_ID

NUMBER

Internal/system-generated identifier for the database of the current table.

TABLE_CATALOG

TEXT

Name of the database for the current table.

CONSTRAINT_TYPE

TEXT

Type of the constraint (PRIMARY KEY, UNIQUE KEY, or FOREIGN KEY).

IS_DEFERRABLE

TEXT

Whether evaluation of the constraint can be deferred; by default, always N.

INITIALLY_DEFERRED

TEXT

Whether evaluation of the constraint is deferrable and initially deferred; by default, always Y.

ENFORCED

TEXT

Whether the constraint is enforced; by default, always N.

COMMENT

TEXT

Comment for the constraint.

CREATED

TIMESTAMP_LTZ

Date and time when the constraint was created.

LAST_ALTERED

TIMESTAMP_LTZ

Date and time the object was last altered. See Usage Notes.

DELETED

TIMESTAMP_LTZ

Date and time when the constraint was dropped.

RELY

TEXT

Whether a constraint in NOVALIDATE mode is taken into account during query rewrite. For details, see Constraint properties.

Usage notes¶

  • Latency for the view may be up to 120 minutes (2 hours).

  • The view only displays objects for which the current role for the session has been granted access privileges.

  • The view does not recognize the MANAGE GRANTS privilege and consequently may show less information compared to a SHOW command executed by a user who holds the MANAGE GRANTS privilege.

  • The LAST_ALTERED column is updated when the following operations are performed on an object:

    • DDL operations.

    • DML operations (for tables only). This column is updated even when no rows are affected by the DML statement.

    • Background maintenance operations on metadata performed by Snowflake.