What is CONCAT used for in Snowflake?

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What is CONCAT used for in Snowflake?

Daniel Steinhold Answered question July 26, 2023
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In Snowflake, the CONCAT function is used to concatenate (join together) two or more strings or values into a single string. It is commonly used to combine multiple columns or strings to create a unified result. Here's the syntax for the CONCAT function in Snowflake:

```
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CONCAT(string1, string2, ...)

```

The CONCAT function takes two or more string arguments and returns a concatenated string. Each argument can be a column name, string literal, or another expression that evaluates to a string.

Example usage:

```
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SELECT CONCAT('Hello', ' ', 'World') AS concatenated_string;

```

This query will return the concatenated string **`'Hello World'`**.

The CONCAT function can be useful when you want to combine multiple strings or values into a single string, such as when creating a formatted message, generating a unique identifier, or constructing complex SQL queries dynamically.

Note that in Snowflake, you can also use the **`||`** operator as an alternative to the CONCAT function for string concatenation. For example, **`'Hello' || ' ' || 'World'`** will also result in **`'Hello World'`**.

Daniel Steinhold Answered question July 26, 2023
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