Length Function
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The Length function in SQL is used to get the length of a string. This function is called differently for the different databases:
- MySQL: LENGTH( )
- Oracle: LENGTH( )
- SQL Server: LEN( )
The syntax for the Length function is as follows:
Length(str): Find the length of the string str.
Let's take a look at some examples. Assume we have the following table:
Table Geography
| region_name | store_name |
| East | Boston |
| East | New York |
| West | Los Angeles |
| West | San Diego |
Example 1:
SELECT Length(store_name)
FROM Geography
WHERE store_name = 'Los Angeles';
Result:
11
Example 2:
SELECT region_name, Length(region_name)
FROM Geography;
Result:
| region_name | Length(region_name) |
| East | 4 |
| East | 4 |
| West | 4 |
| West | 4 |