28.3.19 The INFORMATION SCHEMA JSON_DUALITY_VIEW_COLUMNS Table

The JSON_DUALITY_VIEW_COLUMNS table shows information about all columns referenced by any JSON duality view which is accessible by the current user. There is one row per table reference.

The JSON_DUALITY_VIEW_COLUMNS table has the following columns:

• TABLE_CATALOG

  View catalog; this is always def.

• TABLE_SCHEMA

  View schema.

• TABLE_NAME

  View name.

• REFERENCED_TABLE_CATALOG

  Table catalog; always def.

• REFERENCED_TABLE_SCHEMA

  Table schema.

• REFERENCED_TABLE_NAME

  Table name.

• IS_ROOT_TABLE

  1 if this is the root table, otherwise 0.

• REFERENCED_TABLE_ID

  Unique table ID within this view.

• REFERENCED_TABLE_COLUMN_NAME

  Column name.

• JSON_KEY_NAME

  JSON key name.

• ALLOW_INSERT

  1 if inserts are allowed, otherwise 0.

• ALLOW_UPDATE

  1 if updates are allowed, otherwise 0.

• ALLOW_DELETE

  1 if deletes are allowed, otherwise 0.

• READ_ONLY

  1 if insert, update, or delete are not allowed, otherwise 0. (In other words, this is 1 only when ALLOW_INSERT, ALLOW_UPDATE, and ALLOW_DELETE are all 0.)

The JSON_DUALITY_VIEW_COLUMNS table was added in MySQL 9.4.0.