SQL query INSERT SELECT COUNT 从一个表逐行到另一个表

Question

I have trouble finding the correct SQL Query. As you can see in the picture, I have two Tables ('Table_1' with column 'VEHICULES') and ('Table_2' with column 'IMMATRICULATION' and 'NOMBRE'). In the Table_2 I want to insert in the column ('Nombre') the counted values from the Table_1 of VEHICULE (CarA, CarB and CarC) in the same row of these values as in the picture.

I tried the below query but it is added a value instead of placing it in the same row of CarA, CarB....

INSERT INTO Table_2 (NOMBRE)
    VALUES ((SELECT COUNT(*) FROM Table_1 WHERE VEHICULES = 'CarA'),
            (SELECT COUNT(*) FROM Table_1 WHERE VEHICULES = 'CarB'),
            (SELECT COUNT(*) FROM Table_1 WHERE VEHICULES = 'CarC')
           );

Answer 1

First generate the select query that returns the values you want inserted into the new table, then add INSERT INTO in the beginning. The group by clause is also what you're missing.

Here is an example

INSERT INTO Table_2 (Name, Cnt)
select VEHICULES, count(*)
from Table_1
group by VEHICULES

Answer 2

You seem to want update , not insert :

update table_2 t2 join
       (select vehicules, count(*) as cnt
        from table_1
        group by vehicules
       ) t1
       on t2.immatriculation = t1.vehicules
    set nombre = t1.cnt;

Answer 3

You need update obviously, rather than insert , and if you're using MSSQL Server ( which's suggested by the error text you got ), then use such a statement:

WITH t AS
(
 SELECT vehicules, COUNT(*) AS cnt
   FROM table_1
  GROUP BY vehicules 
)
UPDATE table_2
   SET nombre = cnt
  FROM t
 WHERE immatriculation = vehicules

Demo