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How to write not equal to a certain condition in sql

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Release: 2024-04-28 10:42:13
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The <> operator is used in SQL to indicate that it is not equal to a certain condition. The example is as follows: SELECT * FROM table_name WHERE column_name <> 'value';

How to write not equal to a certain condition in sql

How to express not equal to a certain condition in SQL

In SQL, use the <> operator to express not equal to a certain condition conditions. <> Operator indicates that two expressions are not equal.

Example:

<code class="sql">SELECT * FROM table_name WHERE column_name <> 'value';</code>
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This query will select all columns from the table_name table that satisfy the column_name column not equal to value The row of the condition.

Other operators:

In addition to the <> operator, there are other operators that can be used to compare values. These include:

  • ##=: equal to
  • !=: not equal to
  • <: less than
  • >: greater than
  • <=: less than or equal to
  • >= : Greater than or equal to

Examples using these operators:

<code class="sql">SELECT * FROM table_name WHERE column_name = 'value';
SELECT * FROM table_name WHERE column_name != 'value';
SELECT * FROM table_name WHERE column_name < 10;
SELECT * FROM table_name WHERE column_name > 10;
SELECT * FROM table_name WHERE column_name <= 10;
SELECT * FROM table_name WHERE column_name >= 10;</code>
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