SQL Server BasicsWhat is SQL Server database?What is RDBMS?What is Normalization?Why we use Denormalization?What_is_SQL?What is PL/SQL?Difference between SQL and PL/SQLDatabase TableOne to One RelationshipOne to Many RelationshipMany to Many RelationshipMany to One RelationshipString Data TypesNumber Data TypesDate Data TypesOther Data TypesCreate DatabaseDrop DatabaseCreating and Managing Users in SQL ServerCreate TableAlter TableDrop TableConstraints in SQL serverPrimary KeyForeign KeyUnique KeyCandidate KeyComposite KeyDifference between primary key and candidate keyPrimary key and foreign key relationshipSurrogate KeyCascading Referential Integrity ConstraintsSelf Referential Integrity ConstraintsInsert into statementInsert multiple recordsUpdate statementDelete statementTruncate statementDifference between Delete and TruncateAlias in SQL ServerSelect statementSelect DistinctSelect TopSelect IntoNull Functions(ISNULL(),NULLIF(),COALESCE())Sub QueryIdentity ColumnSequence objectDifference between sequence and identity columnSQL Server ClausesWHERE ClauseOrder By ClauseTop N ClauseGroup By ClauseHaving ClauseDifference between Where and HavingSQL Server OperatorsArithmetic OperatorsComparison OperatorsLogical OperatorsBitwise OperatorsAny OperatorsAll OperatorsUnion OperatorsUnion All OperatorsDifference between Union and Union AllIntersect OperatorExcept OperatorDifference between Except and IntersectJoinsInner JoinLeft JoinRight JoinFull JoinSelf JoinCross JoinViewsWhat are views?Create views using SSMSIndexed ViewsComplex ViewsCheck Option in ViewCheck Encryption in ViewSchema Binding Option in ViewRead-only ViewsUpdatable ViewsAdvantages and disadvantages of viewsCreate multiple views on one tableCan we implement index on views?Can we Perform Insert, update, delete operation on views?Stored Procedure and FunctionsWhat are Stored Procedures?Why we use stored procedures?Passing parameters to Stored procedureUser-Defined FunctionsDifference between UDF and Stored procedurePre-Defined Functions@@Indentity and Scope_IndentityNULLIF, ISNULL and COALESCE
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SQL - Comparison Operators

Here are the comparison operators in SQL Server:

Equal to (=): Checks if two values are equal.

Example:


SELECT * FROM Customers WHERE City = 'New York';

Not equal to (<> or !=): Checks if two values are not equal.

Example:


SELECT * FROM Customers WHERE City <> 'London';

Greater than (>): Checks if the left operand is greater than the right operand.

Example:


SELECT * FROM Orders WHERE OrderAmount > 1000;

Less than (<): Checks if the left operand is less than the right operand.

Example:


SELECT * FROM Products WHERE UnitPrice < 10.00;

Greater than or equal to (>=): Checks if the left operand is greater than or equal to the right operand.

Example:


SELECT * FROM Employees WHERE Age >= 30;

Less than or equal to (<=): Checks if the left operand is less than or equal to the right operand.

Example:


SELECT * FROM Customers WHERE RegistrationDate <= '2022-01-01';

These comparison operators are commonly used in SELECT statements, WHERE clauses, JOIN conditions, and other SQL operations to compare values and conditions to filter and retrieve data based on specific criteria.

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