How to format the if statement in sql

IF statements are used in SQL to control code execution based on conditions. The formatting rules are as follows: Each keyword occupies one line. Conditional brackets. Code blocks are indented. Statements end with a semicolon. For example: IF (age ≥ 18) THEN Grant access level 1; ELSE Deny access level 1; END IF;

IF in SQL Statement layout

In SQL, the IF statement is used to control code execution based on a certain condition. The basic syntax is as follows:

<code class="sql">IF (condition) THEN
  -- 条件为真的代码块
ELSE
  -- 条件为假的代码块
END IF;</code>

Typesetting rules:

• Each keyword (IF, THEN, ELSE, END IF) should occupy a separate line.
• Conditions should be placed in parentheses.
• Code blocks with true and false conditions should be indented.
• Each statement in a code block should end with a semicolon.

Example:

<code class="sql">IF (age >= 18) THEN
  -- 成年人的代码块
  GRANT access_level1;
ELSE
  -- 未成年的代码块
  DENY access_level1;
END IF;</code>

Note:

• There is no ELSEIF statement in SQL. To handle multiple conditions, you can use nested IF statements.
• The condition can be any valid SQL expression, such as a comparison operator, logical operator, or function call.
• A code block can contain multiple statements.
• Make sure the conditions are accurate to avoid unexpected results.

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