Αποτελέσματα Αναζήτησης
15 Μαρ 2010 · You can do this: UPDATE table1 SET table1.value = (SELECT table2.CODE. FROM table2 . WHERE table1.value = table2.DESC) WHERE table1.UPDATETYPE='blah'
27 Δεκ 2023 · Before diving into complex examples, let's understand the basic syntax of an update with a join operation in Oracle: sql UPDATE table1 SET table1.target_column = (SELECT table2.source_column FROM table2 WHERE table1.join_column = table2.join_column) WHERE EXISTS (SELECT 1 FROM table2 WHERE table1.join_column = table2.join_column); In the above ...
24 Μαΐ 2017 · Usually, when you need to join multiple tables in an UPDATE, MERGE is the solution. merge into address a1 using ( select p.address_fk, ta2.tempaddress1 from premise p join account ac on (ac.id = p.account_fk) join tempaddresstable ta2 on (ac.ext_ref = ta2.tempextref) ) ta1 on (a1.id = ta1.address_fk) when matched then update set a1.address1 ...
19 Φεβ 2015 · For example: UPDATE CONTACT C SET (C.PHONE, C.FAX) = ( SELECT P.PHONE, P.FAX FROM PERSON P WHERE P.PERSON_ID = C.PERSON_ID ) WHERE C.CURRENT_YEAR_ID = ( SELECT CURRENT_YEAR_ID FROM CURRENT_YEAR WHERE DEFAULT_YEAR = 1 ); (You'll have to check my logic, because I'm not entirely clear on your relationships.)
Script Name SQL join types examples; ... Area SQL General; Contributor Chris Saxon (Oracle) Created Tuesday October 19, 2021; Statement 1. create table left_t ( join_column number, left_c2 varchar2(10), left_c3 integer ) ... Band join - rows matching range criteria. select lt.join_column left_join_c, left_c2, left_c3, rt.join_column right_join ...
23 Φεβ 2012 · In Oracle you can update a join if the tables are "key-preserved", ie: UPDATE (SELECT a.val_a, b.val_b. FROM table a. JOIN table b ON a.b_pk = b.b_pk) SET val_a = val_b. Assuming that b_pk is the primary key of b, here the join is updateable because for each row of A there is at most one row from B, therefore the update is deterministic.
5 Φεβ 2014 · You could join to the 2 tables separately (and GROUP BY) and then join them together: WITH dates (dat) AS ( SELECT TO_DATE('02.05.2014','dd.mm.yyyy') + ROWNUM - 1 AS dat FROM all_objects WHERE ROWNUM <= TO_DATE('02.05.2014','dd.mm.yyyy') - TO_DATE('02.05.2014','dd.mm.yyyy') + 1 ) , ret (dat, return_amount) AS ( SELECT d.dat, COALESCE(SUM(r ...
