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'
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.
19 Φεβ 2015 · UPDATE CONTACT SET PHONE = p.PHONE, FAX = p.FAX. FROM PERSON p. INNER JOIN CONTACT on CONTACT.PERSON_ID = p.PERSON_ID. WHERE CONTACT.CURRENT_YEAR_ID = (. SELECT CURRENT_YEAR_ID FROM CURRENT_YEAR WHERE DEFAULT_YEAR = 1. ) However select brings back the records : SELECT * FROM PERSON p.
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 ...
This Oracle tutorial explains how to use the Oracle UPDATE statement with syntax, examples, and practice exercises. The Oracle UPDATE statement is used to update existing records in a table in an Oracle database. There are 2 syntaxes for an update query in Oracle.
5 Απρ 2023 · Now we update the data in T1 using a join to the T2 table. We want to update the T1.CODE and T1.DESCRIPTION values, using the values from T2.CODE and T2.DESCRIPTION using a join in the ID value. update t1 a set a.code = b.code, a.description = b.description from t2 b where a.id = b.id and b.id <= 5;
20 Μαΐ 2023 · Oracle Update with Join is a query command which is responsible for performing the cross-table update. Basically, with this update query statement, we will implement the INNER JOIN and LEFT JOIN clauses.
