How to write not equal to 0 in sql

In SQL, to determine whether a value is not equal to 0, you can use the inequality operator !=, and the syntax is: expression != 0. For example, to find all records that are not equal to 0, you can use SELECT * FROM table_name WHERE column_name != 0;

##Judgment is not equal to 0 in SQL

!=). Its syntax is as follows:

<code>expression != 0</code>

expression represents the value to be compared.

<code class="sql">SELECT * FROM table_name WHERE column_name != 0;</code>

Other notes:

In a certain In some SQL databases (such as MySQL), the inequality operator can also be written as
• <>. The
• != operator has higher precedence than the = operator. Therefore, there is no need to use parentheses when using != in an expression.
If you want to find records that are equal to or not equal to 0, you can use the
• OR operator. For example:

<code class="sql">SELECT * FROM table_name WHERE column_name = 0 OR column_name != 0;</code>

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