ClickHouse/docs/en/sql-reference/statements/show.md
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Co-authored-by: romanzhukov <romanzhukov@yandex-team.ru>
Co-authored-by: alexey-milovidov <milovidov@yandex-team.ru>
2020-10-26 13:29:30 +03:00

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---
toc_priority: 37
toc_title: SHOW
---
# SHOW Statements {#show-queries}
## SHOW CREATE TABLE {#show-create-table}
``` sql
SHOW CREATE [TEMPORARY] [TABLE|DICTIONARY] [db.]table [INTO OUTFILE filename] [FORMAT format]
```
Returns a single `String`-type statement column, which contains a single value the `CREATE` query used for creating the specified object.
## SHOW DATABASES {#show-databases}
Prints a list of all databases.
```sql
SHOW DATABASES [LIKE | ILIKE | NOT LIKE '<pattern>'] [LIMIT <N>] [INTO OUTFILE filename] [FORMAT format]
```
This statement is identical to the query:
```sql
SELECT name FROM system.databases [WHERE name LIKE | ILIKE | NOT LIKE '<pattern>'] [LIMIT <N>] [INTO OUTFILE filename] [FORMAT format]
```
### Examples {#examples}
Getting database names, containing the symbols sequence 'de' in their names:
``` sql
SHOW DATABASES LIKE '%de%'
```
Result:
``` text
┌─name────┐
│ default │
└─────────┘
```
Getting database names, containing symbols sequence 'de' in their names, in the case insensitive manner:
``` sql
SHOW DATABASES ILIKE '%DE%'
```
Result:
``` text
┌─name────┐
│ default │
└─────────┘
```
Getting database names, not containing the symbols sequence 'de' in their names:
``` sql
SHOW DATABASES NOT LIKE '%de%'
```
Result:
``` text
┌─name───────────────────────────┐
│ _temporary_and_external_tables │
│ system │
│ test │
│ tutorial │
└────────────────────────────────┘
```
Getting the first two rows from database names:
``` sql
SHOW DATABASES LIMIT 2
```
Result:
``` text
┌─name───────────────────────────┐
│ _temporary_and_external_tables │
│ default │
└────────────────────────────────┘
```
### See Also {#see-also}
- [CREATE DATABASE](https://clickhouse.tech/docs/en/sql-reference/statements/create/database/#query-language-create-database)
## SHOW PROCESSLIST {#show-processlist}
``` sql
SHOW PROCESSLIST [INTO OUTFILE filename] [FORMAT format]
```
Outputs the content of the [system.processes](../../operations/system-tables/processes.md#system_tables-processes) table, that contains a list of queries that is being processed at the moment, excepting `SHOW PROCESSLIST` queries.
The `SELECT * FROM system.processes` query returns data about all the current queries.
Tip (execute in the console):
``` bash
$ watch -n1 "clickhouse-client --query='SHOW PROCESSLIST'"
```
## SHOW TABLES {#show-tables}
Displays a list of tables.
```sql
SHOW [TEMPORARY] TABLES [{FROM | IN} <db>] [LIKE | ILIKE | NOT LIKE '<pattern>'] [LIMIT <N>] [INTO OUTFILE <filename>] [FORMAT <format>]
```
If the `FROM` clause is not specified, the query returns the list of tables from the current database.
This statement is identical to the query:
```sql
SELECT name FROM system.tables [WHERE name LIKE | ILIKE | NOT LIKE '<pattern>'] [LIMIT <N>] [INTO OUTFILE <filename>] [FORMAT <format>]
```
### Examples {#examples}
Getting table names, containing the symbols sequence 'user' in their names:
``` sql
SHOW TABLES FROM system LIKE '%user%'
```
Result:
``` text
┌─name─────────────┐
│ user_directories │
│ users │
└──────────────────┘
```
Getting table names, containing sequence 'user' in their names, in the case insensitive manner:
``` sql
SHOW TABLES FROM system ILIKE '%USER%'
```
Result:
``` text
┌─name─────────────┐
│ user_directories │
│ users │
└──────────────────┘
```
Getting table names, not containing the symbol sequence 's' in their names:
``` sql
SHOW TABLES FROM system NOT LIKE '%s%'
```
Result:
``` text
┌─name─────────┐
│ metric_log │
│ metric_log_0 │
│ metric_log_1 │
└──────────────┘
```
Getting the first two rows from table names:
``` sql
SHOW TABLES FROM system LIMIT 2
```
Result:
``` text
┌─name───────────────────────────┐
│ aggregate_function_combinators │
│ asynchronous_metric_log │
└────────────────────────────────┘
```
### See Also {#see-also}
- [Create Tables](https://clickhouse.tech/docs/en/getting-started/tutorial/#create-tables)
- [SHOW CREATE TABLE](https://clickhouse.tech/docs/en/sql-reference/statements/show/#show-create-table)
## SHOW DICTIONARIES {#show-dictionaries}
Displays a list of [external dictionaries](../../sql-reference/dictionaries/external-dictionaries/external-dicts.md).
``` sql
SHOW DICTIONARIES [FROM <db>] [LIKE '<pattern>'] [LIMIT <N>] [INTO OUTFILE <filename>] [FORMAT <format>]
```
If the `FROM` clause is not specified, the query returns the list of dictionaries from the current database.
You can get the same results as the `SHOW DICTIONARIES` query in the following way:
``` sql
SELECT name FROM system.dictionaries WHERE database = <db> [AND name LIKE <pattern>] [LIMIT <N>] [INTO OUTFILE <filename>] [FORMAT <format>]
```
**Example**
The following query selects the first two rows from the list of tables in the `system` database, whose names contain `reg`.
``` sql
SHOW DICTIONARIES FROM db LIKE '%reg%' LIMIT 2
```
``` text
┌─name─────────┐
│ regions │
│ region_names │
└──────────────┘
```
## SHOW GRANTS {#show-grants-statement}
Shows privileges for a user.
### Syntax {#show-grants-syntax}
``` sql
SHOW GRANTS [FOR user]
```
If user is not specified, the query returns privileges for the current user.
## SHOW CREATE USER {#show-create-user-statement}
Shows parameters that were used at a [user creation](../../sql-reference/statements/create/user.md).
`SHOW CREATE USER` doesnt output user passwords.
### Syntax {#show-create-user-syntax}
``` sql
SHOW CREATE USER [name | CURRENT_USER]
```
## SHOW CREATE ROLE {#show-create-role-statement}
Shows parameters that were used at a [role creation](../../sql-reference/statements/create/role.md).
### Syntax {#show-create-role-syntax}
``` sql
SHOW CREATE ROLE name
```
## SHOW CREATE ROW POLICY {#show-create-row-policy-statement}
Shows parameters that were used at a [row policy creation](../../sql-reference/statements/create/row-policy.md).
### Syntax {#show-create-row-policy-syntax}
``` sql
SHOW CREATE [ROW] POLICY name ON [database.]table
```
## SHOW CREATE QUOTA {#show-create-quota-statement}
Shows parameters that were used at a [quota creation](../../sql-reference/statements/create/quota.md).
### Syntax {#show-create-quota-syntax}
``` sql
SHOW CREATE QUOTA [name | CURRENT]
```
## SHOW CREATE SETTINGS PROFILE {#show-create-settings-profile-statement}
Shows parameters that were used at a [settings profile creation](../../sql-reference/statements/create/settings-profile.md).
### Syntax {#show-create-settings-profile-syntax}
``` sql
SHOW CREATE [SETTINGS] PROFILE name
```
## SHOW USERS {#show-users-statement}
Returns a list of [user account](../../operations/access-rights.md#user-account-management) names. To view user accounts parameters, see the system table [system.users](../../operations/system-tables/users.md#system_tables-users).
### Syntax {#show-users-syntax}
``` sql
SHOW USERS
```
## SHOW ROLES {#show-roles-statement}
Returns a list of [roles](../../operations/access-rights.md#role-management). To view another parameters, see system tables [system.roles](../../operations/system-tables/roles.md#system_tables-roles) and [system.role-grants](../../operations/system-tables/role-grants.md#system_tables-role_grants).
### Syntax {#show-roles-syntax}
``` sql
SHOW [CURRENT|ENABLED] ROLES
```
## SHOW PROFILES {#show-profiles-statement}
Returns a list of [setting profiles](../../operations/access-rights.md#settings-profiles-management). To view user accounts parameters, see the system table [settings_profiles](../../operations/system-tables/settings_profiles.md#system_tables-settings_profiles).
### Syntax {#show-profiles-syntax}
``` sql
SHOW [SETTINGS] PROFILES
```
## SHOW POLICIES {#show-policies-statement}
Returns a list of [row policies](../../operations/access-rights.md#row-policy-management) for the specified table. To view user accounts parameters, see the system table [system.row_policies](../../operations/system-tables/row_policies.md#system_tables-row_policies).
### Syntax {#show-policies-syntax}
``` sql
SHOW [ROW] POLICIES [ON [db.]table]
```
## SHOW QUOTAS {#show-quotas-statement}
Returns a list of [quotas](../../operations/access-rights.md#quotas-management). To view quotas parameters, see the system table [system.quotas](../../operations/system-tables/quotas.md#system_tables-quotas).
### Syntax {#show-quotas-syntax}
``` sql
SHOW QUOTAS
```
## SHOW QUOTA {#show-quota-statement}
Returns a [quota](../../operations/quotas.md) consumption for all users or for current user. To view another parameters, see system tables [system.quotas_usage](../../operations/system-tables/quotas_usage.md#system_tables-quotas_usage) and [system.quota_usage](../../operations/system-tables/quota_usage.md#system_tables-quota_usage).
### Syntax {#show-quota-syntax}
``` sql
SHOW [CURRENT] QUOTA
```
[Original article](https://clickhouse.tech/docs/en/query_language/show/) <!--hide-->