SCHEMA_ID (Transact-SQL)

THIS TOPIC APPLIES TO: yesSQL Server (starting with 2008)yesAzure SQL DatabaseyesAzure SQL Data Warehouse yesParallel Data Warehouse

Returns the schema ID associated with a schema name.

Topic link icon Transact-SQL Syntax Conventions

Syntax

-- Syntax for SQL Server, Azure SQL Database, Azure SQL Data Warehouse, Parallel Data Warehouse  

SCHEMA_ID ( [ schema_name ] )   

Arguments

Term Definition
schema_name Is the name of the schema. schema_name is a sysname. If schema_name is not specified, SCHEMA_ID will return the ID of the default schema of the caller.

Return Types

int

NULL will be returned if schema_name is not a valid schema.

Remarks

SCHEMA_ID will return IDs of system schemas and user-defined schemas. SCHEMA_ID can be called in a select list, in a WHERE clause, and anywhere an expression is allowed.

Examples

A. Returning the default schema ID of a caller

SELECT SCHEMA_ID();  
GO  

B. Returning the schema ID of a named schema

USE AdventureWorks2012;  
GO  
SELECT SCHEMA_ID('HumanResources');  
GO   

Examples: Azure SQL Data Warehouse and Parallel Data Warehouse

C. Returning the default schema ID of a caller

SELECT SCHEMA_ID();  

D. Returning the schema ID of a named schema

SELECT SCHEMA_ID('dbo');  

See Also

Metadata Functions (Transact-SQL)
SCHEMA_NAME (Transact-SQL)
sys.schemas (Transact-SQL)