Oct 26, 2010 · Oracle recommends that you use the FROM clause OUTER JOIN syntax rather than the Oracle join operator. Outer join queries that use the Oracle join operator (+) are subject to the …

Aug 17, 2012 · I don't know oracle good enough, but I think there is an Query Compilation Cache like in SQL Server 2008 R2. If a query is compiled as new query, the database optimiser calculates a new …

insert into user1.customer (name,surname) values ('michael','jackson'); The result will be "ORA-00942: table or view does not exist" even though user2 does have insert and select privileges on …

May 18, 2012 · I would like to know if there are any differences in between the two not equal operators <> and != in Oracle. Are there cases where they can give different results or different performance?

The question is about to use a variable in a script means to me it will be used in SQL*Plus. The problem is you missed the quotes and Oracle can not parse the value to number.

I'm looking for a good way to perform multi-row inserts into an Oracle 9 database. The following works in MySQL but doesn't seem to be supported in Oracle. INSERT INTO TMP_DIM_EXCH_RT …

Jan 29, 2014 · According to Oracle's documentation linked to in the answer, "To write a query that performs an outer join of tables A and B and returns all rows from A (a left outer join), use the LEFT …

In Oracle you can create functions (standalone or in a package) and use them in a select statement.

Jun 29, 2015 · What is the string concatenation operator in Oracle SQL? Are there any "interesting" features I should be careful of? (This seems obvious, but I couldn't find a previous question asking it).

For each row returned by a query, the ROWNUM pseudocolumn returns a number indicating the order in which Oracle selects the row from a table or set of joined rows.