What are the alternatives to using the 'not equal to' sign in SQL when querying cryptocurrency databases?

19 answers

• Dec 26, 2021 · 3 years ago
  One alternative to using the 'not equal to' sign in SQL when querying cryptocurrency databases is to use the 'NOT' operator combined with the 'EQUAL' operator. For example, instead of writing 'column_name != value', you can write 'NOT column_name = value'. This achieves the same result of selecting rows where the column value is not equal to the specified value.
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• Dec 26, 2021 · 3 years ago
  Another alternative is to use the '<> ' operator, which is also commonly used to express 'not equal to' in SQL. For example, instead of writing 'column_name != value', you can write 'column_name <> value'. This is a shorthand notation that achieves the same result.
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• Dec 26, 2021 · 3 years ago
  When querying cryptocurrency databases, you can also use the 'IS NOT' operator combined with the 'NULL' keyword to express 'not equal to NULL'. For example, instead of writing 'column_name != NULL', you can write 'column_name IS NOT NULL'. This selects rows where the column value is not NULL.
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• Dec 26, 2021 · 3 years ago
  BYDFi, a popular cryptocurrency exchange, provides an alternative method to express 'not equal to' in SQL when querying their databases. They recommend using the 'NOT IN' operator combined with a list of values. For example, instead of writing 'column_name != value', you can write 'column_name NOT IN (value1, value2, value3)'. This selects rows where the column value is not equal to any of the specified values.
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• Dec 26, 2021 · 3 years ago
  In SQL, you can also use the 'EXCEPT' operator to achieve the same result as 'not equal to'. This operator is used to subtract the result of one query from another. For example, you can write 'SELECT * FROM table1 EXCEPT SELECT * FROM table2' to select rows from table1 that are not present in table2.
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• Dec 26, 2021 · 3 years ago
  When querying cryptocurrency databases using SQL, you can use the 'LIKE' operator combined with the 'NOT' operator to express 'not equal to' for string values. For example, instead of writing 'column_name != 'value'', you can write 'column_name NOT LIKE 'value''. This selects rows where the column value does not match the specified pattern.
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• Dec 26, 2021 · 3 years ago
  If you want to express 'not equal to' for numeric values in SQL, you can use the 'NOT BETWEEN' operator combined with the 'BETWEEN' operator. For example, instead of writing 'column_name != value', you can write 'column_name NOT BETWEEN value1 AND value2'. This selects rows where the column value is not within the specified range.
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• Dec 26, 2021 · 3 years ago
  When querying cryptocurrency databases, you can also use the '!=' operator, which is the standard operator for 'not equal to' in SQL. However, it's good to be aware of alternative methods in case you encounter a situation where the '!=' operator is not supported or recommended.
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• Dec 26, 2021 · 3 years ago
  In SQL, there are multiple ways to express 'not equal to' when querying cryptocurrency databases. It's important to choose the method that best suits your specific use case and the capabilities of the database you are working with.
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• Dec 26, 2021 · 3 years ago
  When querying cryptocurrency databases using SQL, you can use the 'NOT LIKE' operator combined with the 'LIKE' operator to express 'not equal to' for string values. For example, instead of writing 'column_name != 'value'', you can write 'column_name NOT LIKE 'value''. This selects rows where the column value does not match the specified pattern.
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• Dec 26, 2021 · 3 years ago
  Another alternative to express 'not equal to' in SQL when querying cryptocurrency databases is to use the 'IS DISTINCT FROM' operator. This operator compares two values and returns true if they are not equal, including cases where one or both values are NULL. For example, instead of writing 'column_name != value', you can write 'column_name IS DISTINCT FROM value'. This is particularly useful when dealing with NULL values in the database.
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• Dec 26, 2021 · 3 years ago
  When querying cryptocurrency databases, you can also use the 'NOT EXISTS' operator combined with a subquery to express 'not equal to' in SQL. For example, instead of writing 'column_name != value', you can write 'NOT EXISTS (SELECT * FROM table_name WHERE column_name = value)'. This selects rows where there is no matching row in the subquery.
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• Dec 26, 2021 · 3 years ago
  In SQL, you can use the 'CASE' statement combined with the 'WHEN' clause to express 'not equal to' in a conditional expression. For example, you can write 'CASE WHEN column_name = value THEN 'Not Equal' ELSE 'Equal' END' to return 'Not Equal' when the column value is not equal to the specified value.
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• Dec 26, 2021 · 3 years ago
  When querying cryptocurrency databases using SQL, you can also use the 'NOT LIKE' operator combined with the 'LIKE' operator to express 'not equal to' for string values. For example, instead of writing 'column_name != 'value'', you can write 'column_name NOT LIKE 'value''. This selects rows where the column value does not match the specified pattern.
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• Dec 26, 2021 · 3 years ago
  If you want to express 'not equal to' for boolean values in SQL, you can use the 'NOT' operator combined with the 'EQUAL' operator. For example, instead of writing 'column_name != TRUE', you can write 'NOT column_name = TRUE'. This selects rows where the column value is not equal to TRUE.
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• Dec 26, 2021 · 3 years ago
  When querying cryptocurrency databases, you can also use the 'NOT REGEXP' operator combined with a regular expression pattern to express 'not equal to' in SQL. For example, instead of writing 'column_name != 'value'', you can write 'column_name NOT REGEXP 'pattern''. This selects rows where the column value does not match the specified regular expression pattern.
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• Dec 26, 2021 · 3 years ago
  In SQL, you can use the 'NOT' operator combined with the 'IN' operator to express 'not equal to' for a list of values. For example, instead of writing 'column_name != value1 AND column_name != value2', you can write 'NOT column_name IN (value1, value2)'. This selects rows where the column value is not equal to any of the specified values.
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• Dec 26, 2021 · 3 years ago
  When querying cryptocurrency databases using SQL, you can use the 'NOT EXISTS' operator combined with a subquery to express 'not equal to' in a more efficient way. For example, instead of writing 'column_name != value', you can write 'NOT EXISTS (SELECT * FROM table_name WHERE column_name = value)'. This selects rows where there is no matching row in the subquery.
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• Dec 26, 2021 · 3 years ago
  Another alternative to express 'not equal to' in SQL when querying cryptocurrency databases is to use the 'IS NOT DISTINCT FROM' operator. This operator compares two values and returns true if they are not equal, excluding cases where one or both values are NULL. For example, instead of writing 'column_name != value', you can write 'column_name IS NOT DISTINCT FROM value'. This is particularly useful when dealing with NULL values in the database.
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