How to get tables with/without Index and Non Clustered Index on Database?

How to get all the Tables with or without Non-Clustered Indexes in Sql Server?

Below to get all the Tables without any Non-Clustered indexes:

--List all the Tables with NO Non-Clustered Indexes SELECT Name 'Tables without any Non-Clustered Indexes' FROM SYS.tables WHERE OBJECTPROPERTY(OBJECT_ID,'TableHasNonclustIndex') = 0         AND Type = 'U'

We can write a query like below to get all the Tables with Non-Clustered indexes:

--List all the Tables that have Non-Clustered Indexes SELECT Name 'Tables with Non-Clustered Indexes' FROM SYS.tables WHERE OBJECTPROPERTY(OBJECT_ID,'TableHasNonclustIndex') = 1         AND Type = 'U'

Let us understand this with example:

CREATE DATABASE SqlHintsDemoDB GO USE SqlHintsDemoDB GO /*Let us create Customers table with Clustered and Non-Clustered Indexes.*/ CREATE TABLE dbo.Customers (     CustomerId int IDENTITY (1, 1)              PRIMARY KEY CLUSTERED NOT NULL,     FirstName Varchar(50),     LastName Varchar(50)) GO CREATE NONCLUSTERED INDEX IX_Customers     ON dbo.Customers(FirstName,LastName) GO /*Let us create Orders Table with Clustered indexe only.*/ CREATE TABLE dbo.Orders (     OrderId int IDENTITY (1, 1)           PRIMARY KEY CLUSTERED NOT NULL,     CustomerId int NOT NULL ,     CreationDT DATETIME NOT NULL) GO /*Let us create OrderItems Table without any indexes.*/ CREATE TABLE dbo.OrderItems (     OrderItemId int IDENTITY (1, 1),     OrderId int NOT NULL,     Qty int NOT NUll) GO

Now let us run the queries to get the list of all Tables with or without Non-Clustered indexes and verify the result:

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How to find all the tables with no indexes at all in Sql Server?

We can write a query like below to get all the Tables in the Database that don’t have any indexes:

SELECT Name 'Tables without any Indexes' FROM SYS.tables WHERE OBJECTPROPERTY(OBJECT_ID,'TableHasIndex')=0

Let us understand this with an example:

CREATE DATABASE SqlHintsDemoDB GO USE SqlHintsDemoDB GO /*Let us create Customers table with Clustered and Non-Clustered Indexes.*/ CREATE TABLE dbo.Customers (     CustomerId int IDENTITY (1, 1)              PRIMARY KEY CLUSTERED NOT NULL ,     FirstName Varchar(50),     LastName Varchar(50)) GO CREATE NONCLUSTERED INDEX IX_Customers     ON dbo.Customers(FirstName,LastName) GO   /*Let us create Orders Table without any indexes.*/ CREATE TABLE dbo.Orders (     OrderId int IDENTITY (1, 1) NOT NULL ,     CustomerId int NOT NULL ,     CreationDT DATETIME NOT NULL) GO

Now let us run the query to get the list of all the tables with no indexes at all and verify the result: