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15 wrz 2008 · If you need to write just one condition, then iif() is sufficient, however if you want to write multiple iif() conditions within one statement then you will have to use `case' statement as demonstrated in above responses. Here is an example for your reference.
28 maj 2024 · We can use either a CASE statement or an IIF() function to implement IF-THEN logic in SQL. In this tutorial, we’ll explore how to implement IF-THEN logic in SQL across various dialects such as SQL Server, MySQL, and PostgreSQL.
SELECT CASE WHEN ColB = 'March' THEN (Select ColA FROM tablename WHERE ColB = 'January') END FROM tablename Or can be done without a CASE would be SELECT (SELECT colA FROM tablename WHERE colB = 'January') FROM tablename WHERE colB = 'March'
12 wrz 2022 · The keyword IF is followed by an argument or group of arguments combined with AND or OR keywords. An argument is a logical comparison that evaluates to either true or false. Some examples of an argument might be "@NumberValue < 1", "@TextValue ='Hello' " ,or "BooleanFunction ()".
30 paź 2023 · It can be combined with other functions to mimic an SQL if statement in select, enabling you to specify various outcomes and choose among them based on a specified condition or index, thus making it possible to render results based on conditional logic directly within a SELECT statement.
3 wrz 2024 · Syntax. IF boolean_expression { sql_statement | statement_block } [ ELSE { sql_statement | statement_block } ] Arguments. boolean_expression. An expression that returns TRUE or FALSE. If the Boolean expression contains a SELECT statement, the SELECT statement must be enclosed in parentheses. { sql_statement | statement_block }
21 lip 2023 · The IIF function in SQL Server is a handy tool that simplifies conditional queries. It provides a concise way to express IF-THEN-ELSE logic in a single function call instead of writing separate statements.
