How declare variable in MySQL procedure?

To declare a variable inside a stored procedure, you use the DECLARE statement as follows:

  1. DECLARE variable_name datatype(size) [DEFAULT default_value];
  2. DECLARE totalSale DEC(10,2) DEFAULT 0.0;
  3. DECLARE x, y INT DEFAULT 0;
  4. SET variable_name = value;
  5. DECLARE total INT DEFAULT 0; SET total = 10;

How can use CASE statement in stored procedure in SQL Server?

CASE statement in SQL procedures

  1. Simple case statement: used to enter into some logic based on a literal value.
  2. Searched case statement: used to enter into some logic based on the value of an expression.

Can we use CASE statement in MySQL?

Answer: MySQL provides a CASE Statement that can be used to retrieve data against a column value based on conditions mentioned as a part of the WHEN blocks of the CASE statement. MySQL CASE can also be used for conditional table updates.

What is CASE statement in MySQL?

The MySQL CASE Statement The CASE statement goes through conditions and returns a value when the first condition is met (like an if-then-else statement). So, once a condition is true, it will stop reading and return the result. If no conditions are true, it returns the value in the ELSE clause.

How do you assign a value to a variable in MySQL?

There are two ways to assign a value to a user-defined variable. You can use either := or = as the assignment operator in the SET statement. For example, the statement assigns number 100 to the variable @counter. The second way to assign a value to a variable is to use the SELECT statement.

How do I print a variable value in MySQL?

“mysql print variable” Code Answer

  1. declare myvar INT default 0;
  2. SET myvar = 5;
  3. SELECT concat(‘myvar is ‘, myvar);

Can we use CASE statement in stored procedure?

Case statements can be used in Select and Where clauses and even an Order By clause. A Case expression is mostly used in SQL stored procedures or as a formula for a particular column, which optimizes the SQL statements.

What is case in stored procedure in SQL?

A CASE statement in SQL Server is like a conditional statement. The CASE statement evaluates the set of conditions and returns one result when a condition is satisfied.

How do I write a multiple CASE statement in MySQL?

Syntax 1: CASE WHEN in MySQL with Multiple Conditions In this syntax, CASE matches ‘value’ with “value1”, “value2”, etc., and returns the corresponding statement. If ‘value’ is not equal to any values CASE returns the statement in ELSE clause if ELSE clause is specified.

Why case is used in MySQL?

Definition and Usage. The CASE statement goes through conditions and return a value when the first condition is met (like an IF-THEN-ELSE statement). So, once a condition is true, it will stop reading and return the result. If no conditions are true, it will return the value in the ELSE clause.

What is the case function?

CASE is a complex function that has two forms; the simple-when form and the searched-when form. In either form CASE returns a result, the value of which controls the path of subsequent processing.