Jaa

SHOW VIEWS

  • Artikkeli

Applies to: check marked yes Databricks SQL check marked yes Databricks Runtime

Returns all the views for an optionally specified schema. Additionally, the output of this statement may be filtered by an optional matching pattern. If no schema is specified then the views are returned from the current schema. While using Databricks Runtime, if the specified schema is the global temporary view schema, Databricks Runtime lists global temporary views. Note that the command also lists local temporary views regardless of a given schema.

Syntax

SHOW VIEWS [ { FROM | IN } schema_name ] [ [ LIKE ] regex_pattern ]

Parameters

  • schema_name

    The schema name from which views are listed.

  • regex_pattern

    The regular expression pattern that is used to filter out unwanted views.

    • Except for * and | character, the pattern works like a regular expression.
    • * alone matches 0 or more characters and | is used to separate multiple different regular expressions, any of which can match.
    • The leading and trailing blanks are trimmed in the input pattern before processing. The pattern match is case-insensitive.

Examples

-- Create views in different schemas, also create global/local temp views.
> CREATE VIEW sam AS SELECT id, salary FROM employee WHERE name = 'sam';
> CREATE VIEW sam1 AS SELECT id, salary FROM employee WHERE name = 'sam1';
> CREATE VIEW suj AS SELECT id, salary FROM employee WHERE name = 'suj';
> USE SCHEMA usersc;
> CREATE VIEW user1 AS SELECT id, salary FROM default.employee WHERE name = 'user1';
> CREATE VIEW user2 AS SELECT id, salary FROM default.employee WHERE name = 'user2';
> USE SCHEMA default;
> CREATE TEMP VIEW temp1 AS SELECT 1 AS col1;
> CREATE TEMP VIEW temp2 AS SELECT 1 AS col1;

-- List all views in default schema
> SHOW VIEWS;
  namespace     viewName     isTemporary
 ------------- ------------ --------------
  default       sam          false
  default       sam1         false
  default       suj          false
                temp2        true

-- List all views from usersc schema
> SHOW VIEWS FROM usersc;
  namespace     viewName     isTemporary
 ------------- ------------ --------------
  usersc        user1        false
  usersc        user2        false
                temp2        true

-- List all views from default schema matching the pattern `sam*`
> SHOW VIEWS FROM default LIKE 'sam*';
  namespace   viewName     isTemporary
 ----------- ------------ --------------
  default     sam          false
  default     sam1         false

-- List all views from the current schema matching the pattern `sam|suj｜temp*`
> SHOW VIEWS LIKE 'sam|suj|temp*';
  namespace     viewName     isTemporary
 ------------- ------------ --------------
  default       sam          false
  default       suj          false
                temp2        true