Miscellaneous

Can you use if statements in SQL?

Can you use if statements in SQL?

IF statements can be used to conditionally enter into some logic based on the status of a condition being satisfied. The IF statement is logically equivalent to a CASE statements with a searched-case-statement-when clause.

What is the syntax to in stored procedure?

The stored procedure syntax has the following parameters: Schema_name: It is the name of your database or schema. By default, a procedure is associated with the current database, but we can also create it into another database by specifying the DB name.

What is the conditional syntax in SQL?

A condition specifies a combination of one or more expressions and logical (Boolean) operators and returns a value of TRUE , FALSE , or unknown. Conditions have several forms.

How do I write an if statement in MySQL?

The MySQL IF() function is used for validating a condition. The IF() function returns a value if the condition is TRUE and another value if the condition is FALSE. The MySQL IF() function can return values that can be either numeric or strings depending upon the context in which the function is used.

How do you write multiple conditions in a case statement in SQL?

Here are 3 different ways to apply a case statement using SQL:

  1. (1) For a single condition: CASE WHEN condition_1 THEN result_1 ELSE result_2 END AS new_field_name.
  2. (2) For multiple conditions using AND: CASE WHEN condition_1 AND condition_2 THEN result_1 ELSE result_2 END AS new_field_name.

What is the syntax of stored procedure in SQL?

SQL Stored Procedures for SQL Server A stored procedure is a prepared SQL code that you can save, so the code can be reused over and over again. So if you have an SQL query that you write over and over again, save it as a stored procedure, and then just call it to execute it.

What is a syntax of create procedure?

Syntax. The syntax to create a procedure in Oracle is: CREATE [OR REPLACE] PROCEDURE procedure_name [ (parameter [,parameter]) ] IS [declaration_section] BEGIN executable_section [EXCEPTION exception_section] END [procedure_name];

How do you write and or condition in SQL?

SQL AND, OR and NOT Operators

  1. AND Syntax. SELECT column1, column2, FROM table_name. WHERE condition1 AND condition2 AND condition3 …;
  2. OR Syntax. SELECT column1, column2, FROM table_name. WHERE condition1 OR condition2 OR condition3 …;
  3. NOT Syntax. SELECT column1, column2, FROM table_name. WHERE NOT condition;

What are the conditional statements in DBMS?

Conditional selection statements, which run different statements for different data values. The conditional selection statements are IF and CASE . Loop statements, which run the same statements with a series of different data values. The loop statements are the basic LOOP , FOR LOOP , and WHILE LOOP .

How do you write if and else in SQL?

DECLARE @age INT; SET @age = 60; IF @age < 18 PRINT ‘underage’; ELSE BEGIN IF @age < 50 PRINT ‘You are below 50’; ELSE PRINT ‘Senior’; END; In this example, the code will print underage if the value of @age is below 18. If not, the ELSE part will be executed.

Can we use if statement in select query in MySQL?

It is quite possible to use MySQL IF() function within SELECT statement by providing the name of the column along with a condition as the first argument of IF() function. To understand it, consider the following data from table ‘Students’.

Can I use if else in MySQL query?

In MySQL, the IF-THEN-ELSE statement is used to execute code when a condition is TRUE, or execute different code if the condition evaluates to FALSE.

Which of the following is the syntax for CASE statement?

Which of the following is correct syntax for CASE statement? Explanation: The CASE statement is started with the keyword CASE followed by any identifier or expression and the IS.

Which syntax is used to view the stored procedure?

To view the definition of a procedure in Query Editor In the query window, enter the following statement that uses the sp_helptext system stored procedure. Change the database name and stored procedure name to reference the database and stored procedure that you want.

How to know if a stored procedure was executed correctly?

The Oracle docs just say “LAST_CALL_ET NUMBER The last call”. November 15, 2002 – 8:19 pm UTC. If a session is currently ACTIVE, this is the number of seconds the statement it is executing has been ACTIVE. If a session is currently INACTIVE, this is how long its been inactive.

How to use if else in stored procedure?

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    • How to execute a stored procedure?

    Execute a stored procedure. Connect to the Database Engine. From the Standard bar,select New Query.

  • Set or clear a procedure for executing automatically. Startup procedures must be in the master database and cannot contain INPUT or OUTPUT parameters.
  • Stop a procedure from executing automatically. Connect to the Database Engine.

    • How do I execute stored procedure?

    – Result must be an entity type. This means that a stored procedure must return all the columns of the corresponding table of an entity. – Result cannot contain related data. – Insert, Update and Delete procedures cannot be mapped with the entity, so the SaveChanges method cannot call stored procedures for CUD operations.