If I have a table Application_user with 100 columns, what is the performance difference between two queries: Query 1: select * from Application_user; Query 2: select a.col1.a.col2,a.col3........ from Application_user a; Performance difference between two queries. And reason behind it
I've just started working in an Oracle database after years of using MySQL and I'm a little confused about the grouping differences. As a starting point, let's say I have this project table: id name created 1 Created on September…
Using oracle plsql, please tell me how to use JSON_TABLE, bfilename and "bulk collect" in order to read data from a json file. The json file contains 2 lists of strings: { "included_errors": [ "include1", "include2" ], "excluded_errors": [ "exclude1",…
With this query: with tbl as ( select 1 ord, 'A' name from dual union all select 2 ord, 'A' name from dual union all select 3 ord, 'A' name from dual union all select 4 ord, 'B' name from…
I have one JSON file and I´m trying to insert in database. Inserts are not working, not sure if I am looping correctly json I´ve done a very easy example: This is the table: CREATE TABLE TEST ( remote_claimid VARCHAR2(20)…
I have a Table which contains data like id, country, city,capacity. Capacity is a JSON array field which has values like [{'totalCapacity':100.0},{'totalCapacity':90.0},{'totalCapacity':80.0},{'totalCapacity':80.0}] against a row in table, so row in table looks like id country city capacity 1 usa new-york…
I added a JavaScript function to capture the ROWID of the rows that are selected in the GRID and passed it to a page item. var gridView = apex.region("emp").call("getCurrentView"), selectedRecords = gridView.getSelectedRecords(), idValues = ""; for (var i = 0;…
I have a DataTable column which has values like 01-04-2023 00:00:00. I want only 04-2023 from that column and update in new DataTable. How can I split that in DataTable? Dt has that column with name DATA_WITH_MONTH_YEAR. update Below is…
I'm trying to build a docker image to access an oracle database at runtime, I'm having the following error message: DPI-1047: Cannot locate a 64-bit Oracle Client library: "/oracle/instantclient/libclntsh.so: cannot open shared object file: No such file or directory". Inside…
lets say i have a table like that id name address Doc 1 {1:mark,2:john} {1:Home,2:Work,3:Club} {NI:299,Pass:A159} 2 {1:Max,2:Mo} {1:Home} {NI:300011} what i want is to write a qurey to select a value from cell based on the key for example…