Αποτελέσματα Αναζήτησης
15 Μαρ 2010 · UPDATE (SELECT T.FIELD A, S.FIELD B FROM TABLE_T T INNER JOIN TABLE_S S ON T.ID = S.ID) SET B = A; A and B are alias fields, you do not need to point the table.
21 Σεπ 2017 · You can get this by adding the gather_plan_statistics hint to your query. Then calling DBMS_Xplan.display_cursor. Like so: set serveroutput off update /*+ gather_plan_statistics */t set x = x + 1; select * from table (dbms_xplan.display_cursor (null, null, 'ALLSTATS LAST')); SQL_ID g4ya70274azsu, child number 0 ...
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 ...
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 ...
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;
To execute a join of three or more tables, Oracle first joins two of the tables based on the join conditions comparing their columns and then joins the result to another table based on join conditions containing columns of the joined tables and the new table.
21 Νοε 2016 · In ORACLE A simple way for update joined table is based on the use the the joined select as a table . UPDATE ( SELECT TBL_TEST2.NAME AS OLD_VALUE FROM TBL_TEST2 INNER JOIN TBL_TEST1 ON TBL_TEST2.DISTRICT = TBL_TEST1.DISTRICT WHERE TBL_TEST2.DISTRICT = '1' ) T SET T.OLD_VALUE = 'DONE' ;
