Presto ilike4/19/2023 Looking forward to playing them for a long time.”īrian Allen, USA: “WOW!I purchased over thirty different sets of bass strings. I can't find anything negative to say about them. The tension was just right (in between gut and steel). Reggie Johnson, USA/Switzerland: “After trying the Presto Jazzicato strings, I was really impressed with the way they played in all situations. (colour code = colour of yarn winding at the ends of the string diameters/string thicknesses in mm, tolerance +/- 0.02 mm) Presto strings are available for orchestra tuning (GDAE) in three gauges: Due to their steel rope core, Presto Nylonwound-strings also work well with magnetic pickups. If strings of thinner gauges were used before, some setup work may be necessary at the saddle and bridge string notches. For bowing, we recommend to roughen the bowing area with fine sandpaper, and to apply rosin directly on the strings. Presto Nylonwound-strings are ideally suited for pizzicato and slapping techniques. The thicker gauges and the smooth polyamid-surface lead to a very pleasant playing feel under your fingers. Compared to other steel strings, Presto Nylonwound-strings are of very low tension. Finally, they are wound in a white-translucent polyamid monofil, and polished to a flat, smooth surface. Presto Nylonwound-strings have a core of braided steel rope, wrapped with silk and metal wires. They are an excellent choice for jazz, rockabilly or bluegrass bass players, searching for this particular “old school” double bass sound. Presto Nylonwound-strings have a dark and mellow, but big tone with a strong sustain. Gauges: Medium, Light and Ultralight Sizes: 3/4, 4/4 Unlike gut strings, Presto Nylonwound-strings strings stay in tune under temperature and humidity changes. When it comes to Case Sensitive Search Configuration you are now an eXpErT.Presto Nylonwound strings for double bass were designed to combine the unique sound of natural gut strings with the convinient properties of steel rope core strings. The regular expression syntax (?i) means matches are case insensitive. This query has matched any upper/lower case combination in the table, mimicking case insensitivity.Įxample: select * from state where regexp_like(name, '(?i)california') To manage case sensitivity in Presto, and mimic collation, we rewrite the query to force case insensitivity explicitly by using:Įxample: select * from state where lower(name)='california' And there is no configuration parameter that controls this. This is described in MySQL’s documentation.īut how do you change Presto to be case- insensitive? Presto does not support collation, because it is not a database and doesn’t store data. Or you can use ALTER to change the collation of a database, table or individual column. You can set the collation at the database creation or table creation level as a part of the CREATE statement. With a RDBMS like MySQL you can configure the collation setting to control if you want case sensitivity or not. Presto has essentially made this data source (MySQL) case sensitive, even though it is exactly the same database in both the above examples, with default configurations used. Now we only get a match with ‘Iowa’, and not with ‘iowa’. Presto:demo> select * from state where name='Iowa' Using Presto to access the same MySQL data source things behave differently, and arguably, in a more expected way: presto:demo> select * from state where name='iowa' This may be acceptable, but in some use cases it could lead to unexpected results. Even though the MySQL column contains the capitalized string ‘Iowa’ it still matched the query’s restriction of ‘iowa’. We’re accessing a MySQL database directly: mysql> select * from state where name='iowa' Here’s an example of why we might need to take steps for case sensitive search configuration. How do we configure things so they behave in the way we want? Some are case insensitive by default, some are not. But not all databases and query engines behave in the same way. When dealing with character data, case sensitivity can be important when searching for specific matches or patterns. Case Sensitive Search Configuration with Presto
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