Answers for "sql select count *"

SQL
18

sql count

/*COUNT(column_name) will return the number of rows from the column 
that are not NULL*/
SELECT COUNT(column_name)
FROM table_name;

/*COUNT(*) will return the number of rows from the table*/
SELECT COUNT(*)
FROM table_name;
Posted by: Guest on August-09-2020
5

sql count(*)

SELECT COUNT(column_name)
FROM table_name
WHERE condition;
Posted by: Guest on February-05-2021

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