sql query inner join 3 tables
# no need to use parentheses - works fine
SELECT * FROM names A
INNER JOIN address B ON A.personID = B.personID
INNER JOIN emailAddress C ON A.personID = C.personID
INNER JOIN phoneNumbers D ON A.personID = D.personID;sql query inner join 3 tables
# no need to use parentheses - works fine
SELECT * FROM names A
INNER JOIN address B ON A.personID = B.personID
INNER JOIN emailAddress C ON A.personID = C.personID
INNER JOIN phoneNumbers D ON A.personID = D.personID;merge clause with inner join
MERGE table1
USING (SELECT table3.keycolumn,
table2.DataColumn1,
table2.DataColumn2
FROM table2
INNER JOIN table3
ON table2.anotherKey = table3.anotherKey
WHERE table2.anotherKey = 'A1') tmpTable
ON
table1.keyColumn = tmpTable.keyColumn
WHEN MATCHED THEN
UPDATE
SET table1.DataColumn1 = tmpTable.DataColumn1
,table1.DataColumn2 = tmpTable.DataColumn2;Copyright © 2021 Codeinu
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