Sql count(*)

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;

To count number of rows in SQL table

SELECT count(*)
FROM information_schema.columns
WHERE table_name = 'Your_table_nale';

Sql count(*)

SELECT COUNT(column_name)
FROM table_name
WHERE condition;

Similar codes

1 vote280 views1 answer
Not exists mysql
SQL
0 vote313 views1 answer
Mysql listing get a particu particular user firsdt
SQL
12 votes280 views1 answer
Env var for setting password for root user mysql docker hub
SQL
0 vote286 views2 answers
Android sqlite tutorial for beginners
SQL
3 votes296 views2 answers
Monthname sql
SQL
0 vote322 views1 answer
GROUP BY postgres
SQL
0 vote298 views1 answer
Mysql select field if condition
SQL
7 votes301 views2 answers
Html to react converter
SQL
0 vote323 views1 answer
Sql quary intervewi question
SQL
4 votes353 views4 answers
Remove duplicate old value in mysql
SQL