To select everything from a table, use * (asterisk operator) Select * from employee; After writing the query, click on the execute button to check for errors Once the query is executed, the table appears Select Distinct in SQL A column often contains many duplicate values, and sometimes the...
Adding multiple rows to a datatable Adding multiple worksheet to Excel using Openxml Adding new columns dynamically Adding results of SQL query to an iEnumerable string adding scrollbar to dropdownlist Adding values inside the datatable to a Dictionary in VB.net Adjust printing to fit sizes (A4 ...
In order to useUNIONto merge the results of two separate queries correctly, both queries should return results in the same format. Some discrepancies will result in database engine errors, while others will give results that don’t match the intention of the query. Consider the two following e...
For example, to create a query for a parameter that provides all category values, you might use a Transact-SQL statement similar to the following: Copy SELECT DISTINCT <column name> FROM The SELECT DISTINCT command removes duplicate values from the result set so that you get each unique ...
MS SQL Server Oracle MySQL SQLite Operators: DISTINCT COUNT Table of Contents Problem Example Solution Discussion Problem You’d like to count how many different non-NULL values there are in a given column. Example Our database has a table namedcustomerwith data in the following columns:id,first...
Watch this Video on TechNet, to watch, share, and download the video in multiple formats. Watch this video Related help topics: Data Profiling Task Profiling Data with the Data Profiling Task and Viewer Video Summary Learn how to use this powerful new task in SQL Server 2008 to become famili...
SELECT SQL_NO_CACHE sd.filter_group_id, fgd.name AS group_name, pf.filter_id AS filter_id, fd.name, COUNT(DISTINCT p2c.product_id) AS total FROM oc_product_to_category p2c LEFT JOIN oc_product_filter pf5 ON pf5.product_id = p2c.product_id ...
1) Generate an array of appropriate length, and the elements in the array do not need to have actual meaning; 2) Use the UDTF function posexplode to generate an index subscript for each element in the array; 3) Take out the index subscript of each element. The above three steps can be...
Afternoon, I'm wondering how to select data using distinct on 2 fields. I've only seen distinct(one.field) but not on two fields. How could I do that...
so how to do that please query working without any problem and give me result i need but I need to use group by instead of distinct on last statement executed in exec@sql and if there are advice about indexes can help me to enhance performance is preferable ...