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

0 vote266 views1 answer
Sql quary stuf
SQL
0 vote231 views2 answers
Mysql multiply
SQL
0 vote278 views1 answer
Sql create and grant user access to database
SQL
0 vote234 views1 answer
Sql create table with references not primary key
SQL
0 vote258 views1 answer
Mysql disable triggers
SQL
1 vote237 views1 answer
Caused by: java.lang.IllegalStateException: Cannot load driver class: com.mysql.jdbc.Driver
SQL
0 vote233 views1 answer
Unique index in mysql
SQL
-1 vote247 views1 answer
Default username and password for oracle 11g
SQL
0 vote229 views1 answer
We are intrested to work with your organization
SQL
3 votes249 views3 answers
Mysql declare variable
SQL