Fear No SQL
In my previous article I provided a few PL/SQL options for returning a collection of keys from a JSON document. They are simple to use and work well enough for most JSON sources I’ve encountered. SQL> select * from json_keys(json(‘{“a”:”test 1″, “b”: “test 2”, “c” : “test 3”}’)); COLUMN_VALUE ——————————————————————————– a b c Iudith Mentzel…
For all the great new functionality introduced in a new database release, sometimes it’s the simple and small things that generate the most buzz. The 23c introduction of Boolean data types in SQL may be one of the biggest. For many years in prior releases the argument against a Boolean SQL type is that it…
If you have a column of values, Oracle provides functions to find each of these values: AVG() for the mean (average), MEDIAN() for the median, and STATS_MODE for the mode. STATS_MODE came in 10g. Before that the mode is also possible but requires extra steps for counting and sorting. For example, given the values 1,…
The trimming functions in Oracle frequently are used by many developers; but not all know the full set of options available and how they compare to each other. Sometimes I need to remind myself so this post is as much for me as for others. I hope you find it helpful. The LTRIM and RTRIM…
Recently I was asked how to bind an R variable to a SQL statement executed with ROracle. In this case it wasn’t a simple “select * from table where x = :b1 and y = :b2.” You can do those quite easily with a data.frame with only one row in it using dbGetQuery(connection, sqlstatement, data.frame)…