“Compter Mysql” Réponses codées

MySql Count Words

SELECT description, LENGTH(TRIM(description)) - LENGTH(REPLACE(TRIM(description), ' ', '')) + 1 FROM test.city
Friendly Hawk

Sélectionnez Count dans la table MySQL

SELECT COUNT(*) FROM count_demos;
Giamblers

Compter Mysql

//returns the total number of values
SELECT COUNT(name) FROM employee;    
Splendid Salmon

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;
Copperfield

MySQL Sélectionner le nombre si contient

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`
Friendly Hawk

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