sql inner join sprcific columns
SELECT
t1.* -- All columns from table1
,
t2.columnName -- Just that column from table2
,
t3.columnName -- And just that column from table3
FROM
table1 AS t1
INNER JOIN table2 as t2
ON t1.id = t2.table1_id
INNER JOIN table3 AS t3
ON t1.id = t3.table1_idinsert to first table if field A equals field B from a second table using sql
UPDATE Table_1 SET Field_X = (SELECT Field_Y FROM Table_2 WHERE Table_1.Field_A=Table_2.Field_B LIMIT 1)Copyright © 2021 Codeinu
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