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'
19 Φεβ 2015 · When you want to update multiple columns at once, you list all of the columns to be updated first, followed by all of the values to use (in the same order that the columns are listed). For example:
18 Ιουν 2011 · UPDATE sample_table2 a SET R1_TOT_AVAIL = (select count(b.plan) from sample_table1 b where b.plan = a.plan and b.brand = a.brand and trim(b.reason) = 'nonbillable' group by b.plan, b.brand) R1_TOT_DURATION = (select sum(b.duration) from sample_table1 b where b.plan = a.plan and b.brand = a.brand and trim(b.reason) = 'nonbillable' group by b ...
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 ...
For example: update nashvillehousing a set propertyaddress = ( select nvl2(a.propertyaddress, b.propertyaddress,b.propertyaddress) from nashvillehousing b where a.parcelid = b.parcelid and a.uniqueid_ != b.uniqueid_ ) where a.propertyaddress is null
Contrary to widespread misunderstanding (including on SO), Oracle allows updates through joins. However, there are some (pretty logical) requirements. We illustrate what doesn't work and what does through a simple example. Another way to achieve the same is the MERGE statement.
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;
