What is the difference between Count status and count (*)?

What is the difference between COUNT 1 and COUNT (*)?

The difference is simple: COUNT(*) counts the number of rows produced by the query, whereas COUNT(1) counts the number of 1 values. Note that when you include a literal such as a number or a string in a query, this literal is "appended" or attached to every row that is produced by the FROM clause.

What is meant by COUNT (*)?

count(*) means it will count all records i.e each and every cell BUT. count(1) means it will add one pseudo column with value 1 and returns count of all records.

What is the difference between COUNT state and COUNT (*) With respect to SQL?

The COUNT (*) function counts the number of rows produced by the query, whereas COUNT (1) counts the number of 1 value.

What is the difference between COUNT 0 and COUNT *?

COUNT(*) will count the number of rows, while COUNT(expression) will count non-null values in expression and COUNT(column) will count all non-null values in column. Since both 0 and 1 are non-null values, COUNT(0)=COUNT(1) and they both will be equivalent to the number of rows COUNT(*) .