Mysql count table rows

Count of tables in database mysql

SELECT count(*) 
FROM INFORMATION_SCHEMA.TABLES
WHERE TABLE_SCHEMA = 'database_name'

Mysql get all tables row count

# get row count of all tables in all database in this server
select table_name, table_schema,table_rows from information_schema.tables;

# get row count of all tables in testdb database
select table_name, table_schema,table_rows from information_schema.tables where table_schema='testdb';

Mysql count table rows

select table_name, sum(table_rows) as sum 
from information_schema.tables
where table_schema = '[DB NAME]'
group by table_name 
order by sum desc;

Mysql select count if contains

SELECT sum( case when `tags_Column` CONTAINS 'tag2' then 1 else 0 end ) as tag2,
       sum( case when `tags_Column` CONTAINS 'tag3' then 1 else 0 end ) as tag3,
       .....
       sum( case when `tags_Column` CONTAINS 'tag256' then 1 else 0 end ) as tag256,
       sum( case when `tags_Column` CONTAINS `tag2` OR 
                      `tags_Column` CONTAINS 'tag3`
            then 0 else 1 end ) as doesnt_contains_tags_2_3
FROM `TableContainsTags`

-1

Source: stackoverflow.com

Similar codes

0 vote145 views1 answer
Sql common columns
SQL
3 votes137 views1 answer
Postgres count distinct
SQL
61 votes337 views6 answers
Mysql add column
SQL
4 votes145 views5 answers
Primary key
SQL
0 vote151 views2 answers
How to get the date from datetime in mysql
SQL
0 vote128 views1 answer
Show specific events on mysql
SQL
0 vote140 views1 answer
Sql query for select from specific columns in a table
SQL
2 votes131 views1 answer
Oracle calculated column
SQL
0 vote142 views1 answer
Postgress append string in select
SQL
0 vote98 views1 answer
Big query add table rows to another table
SQL