sql - Find missing value in table from given set

Sql - Find missing value in table from given set

To find missing values in a table from a given set, you can use a query with a LEFT JOIN or NOT IN clause to compare the values in the table with the values in the given set. Here's how you can do it:

Using LEFT JOIN

SELECT given_value FROM ( SELECT 'value1' AS given_value UNION ALL SELECT 'value2' AS given_value UNION ALL SELECT 'value3' AS given_value -- Add more values as needed ) AS given_values LEFT JOIN your_table ON given_values.given_value = your_table.column_name WHERE your_table.column_name IS NULL;

Replace 'value1', 'value2', 'value3', etc., with the values from your given set, and your_table with the name of your table and column_name with the column you want to check against.

Using NOT IN

SELECT given_value FROM ( SELECT 'value1' AS given_value UNION ALL SELECT 'value2' AS given_value UNION ALL SELECT 'value3' AS given_value -- Add more values as needed ) AS given_values WHERE given_values.given_value NOT IN (SELECT column_name FROM your_table);

Replace 'value1', 'value2', 'value3', etc., with the values from your given set, and your_table with the name of your table and column_name with the column you want to check against.

Example

Let's say you have a table products with a column product_name, and you want to find the missing product names from a given set.

SELECT given_value FROM ( SELECT 'iPhone' AS given_value UNION ALL SELECT 'Samsung' AS given_value UNION ALL SELECT 'Google Pixel' AS given_value ) AS given_values LEFT JOIN products ON given_values.given_value = products.product_name WHERE products.product_name IS NULL;

This query will return the product names from the given set ('iPhone', 'Samsung', 'Google Pixel') that are not present in the products table.

Examples

  1. SQL find missing values from given set

    • Query to identify values from a specific set that are missing from a table column in SQL.
    SELECT value FROM ( SELECT unnest(array['value1', 'value2', 'value3', ...]) AS value ) AS set_values WHERE value NOT IN ( SELECT DISTINCT column_name FROM your_table );

  2. Find missing values in SQL table from given list

    • SQL query to locate values from a predefined list that do not exist in a table column.
    SELECT value FROM ( SELECT unnest(array['value1', 'value2', 'value3', ...]) AS value ) AS set_values WHERE NOT EXISTS ( SELECT 1 FROM your_table WHERE column_name = set_values.value );

  3. SQL find missing values from set in table

    • Query to find values from a specified set that are absent in a table column in SQL.
    SELECT value FROM ( SELECT unnest(array['value1', 'value2', 'value3', ...]) AS value ) AS set_values WHERE value NOT IN ( SELECT DISTINCT column_name FROM your_table );

  4. SQL check missing values from given set

    • SQL script to check for missing values from a predefined set within a table column.
    SELECT value FROM ( SELECT unnest(array['value1', 'value2', 'value3', ...]) AS value ) AS set_values WHERE NOT EXISTS ( SELECT 1 FROM your_table WHERE column_name = set_values.value );

  5. Find missing values in SQL table from set

    • Query to identify values from a set that are not present in a specific column of a SQL table.
    SELECT value FROM ( SELECT unnest(array['value1', 'value2', 'value3', ...]) AS value ) AS set_values WHERE NOT EXISTS ( SELECT 1 FROM your_table WHERE column_name = set_values.value );

  6. SQL find missing values from predefined set

    • SQL query to find values from a predefined set that are missing from a table column.
    SELECT value FROM ( SELECT unnest(array['value1', 'value2', 'value3', ...]) AS value ) AS set_values WHERE value NOT IN ( SELECT DISTINCT column_name FROM your_table );

  7. Check missing values in SQL table from given set

    • SQL script to check for missing values from a given set within a table column.
    SELECT value FROM ( SELECT unnest(array['value1', 'value2', 'value3', ...]) AS value ) AS set_values WHERE NOT EXISTS ( SELECT 1 FROM your_table WHERE column_name = set_values.value );

  8. SQL find absent values from set in table

    • Query to find values from a set that do not exist in a specific table column in SQL.
    SELECT value FROM ( SELECT unnest(array['value1', 'value2', 'value3', ...]) AS value ) AS set_values WHERE value NOT IN ( SELECT DISTINCT column_name FROM your_table );

  9. Find missing values in SQL table from provided set

    • SQL query to find values from a provided set that are missing from a table column.
    SELECT value FROM ( SELECT unnest(array['value1', 'value2', 'value3', ...]) AS value ) AS set_values WHERE NOT EXISTS ( SELECT 1 FROM your_table WHERE column_name = set_values.value );

  10. SQL check for missing values in table from set

    • SQL script to check for the absence of values from a specified set within a table column.
    SELECT value FROM ( SELECT unnest(array['value1', 'value2', 'value3', ...]) AS value ) AS set_values WHERE NOT EXISTS ( SELECT 1 FROM your_table WHERE column_name = set_values.value );

More Tags

onscroll python-dataclasses nsmutablearray infinite-loop fuzzy-logic powerquery visible human-interface request-promise aws-sdk-nodejs

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