SQL Check for Non-Empty Strings

1 year ago

Noah Thompson

1 minute

In SQL, you can use the following method to represent non-empty strings:

Use the <> or != operators to represent conditions where a string is not empty, for example:

SELECT * FROM tablename WHERE columnname != '';

“Use IS NOT NULL to represent a condition where something is not empty, for example:”

SELECT * FROM tablename WHERE columnname IS NOT NULL;

You can use the LENGTH or CHAR_LENGTH function to determine if the string length is greater than zero, for example:

SELECT * FROM tablename WHERE LENGTH(columnname) > 0;