Getting Approximate Count in Microsoft SQL Server
Sometimes performance is more important than exact accuracy. Learn how to get an approximate count in SQL Server with better performance.
2019-02-26
5,395 reads
Sometimes performance is more important than exact accuracy. Learn how to get an approximate count in SQL Server with better performance.
2019-02-26
5,395 reads
2018-02-09
1,047 reads
2018-02-02
1,099 reads
2018-01-26
1,096 reads
2018-01-19
1,158 reads
2015-02-02
2,350 reads
2015-01-23
2,609 reads
2015-01-22
2,412 reads
2015-01-21
2,560 reads
2015-01-14
2,539 reads
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Let’s consider the following script that can be executed without any error on both SQL Sever and PostgreSQL. We define the table t1 in which we insert three records:
create table t1 (id int primary key, city varchar(50)); insert into t1 values (1, 'Rome'), (2, 'New York'), (3, NULL);If we execute the following query, how will the records be sorted in both environments?
select city from t1 order by city;See possible answers