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

0 vote38 views1 answer
Show all sequences postgres
SQL
16 votes43 views3 answers
Get count of duplicate records
SQL
3 votes29 views3 answers
Into in sql
SQL
0 vote28 views2 answers
Sql last updated
SQL
0 vote44 views1 answer
Permission denied postgres \copy csv command line
SQL
1 vote28 views1 answer
Sql get missing id
SQL
0 vote27 views2 answers
Return the number of records in a single table mysql
SQL
26 votes29 views2 answers
What is the sql statement that finds duplicate usernames
SQL
5 votes34 views1 answer
Mysql count newlines in field
SQL
7 votes38 views1 answer
Oracle reset sequence
SQL