ElviraD


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row changes per hour by TagID

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row changes per hour by TagID

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I have a large table being written too every second with equipment (PLC) information....

Indexing strategy very long text strings

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Question of the Day

Logical Operators

I have this table and data:

CREATE TABLE ProdList
(ProductID INT NOT NULL
, ProductName VARCHAR(100)
, ProductCategory VARCHAR(40)
, ProductSize VARCHAR(4)
, ProductColor VARCHAR(20)
)
GO
INSERT dbo.ProdList
  (ProductID, ProductName, ProductCategory, ProductSize, ProductColor)
VALUES
  (1, 'Dirt Bike', 'Bike', '26', 'Blue'),
  (2, 'Mtn Bike', 'Bike', '26', 'Red'),
  (3, 'Dirt Bike', 'Bike', '24', 'Blue'),
  (4, 'Downhill', 'Ski', '180', 'White'),
  (5, 'Telemark', 'Ski', '175', 'Blue'),
  (6, 'Snowboard', 'Ski', '182', 'Various'),
  (7, 'Goggles', 'Ski', 'L', 'Clear')
How many rows are returned from this code:
SELECT productid, pl.ProductName
 FROM dbo.ProdList AS pl
 WHERE pl.ProductCategory = 'Bike'
 OR pl.ProductCategory = 'Ski'
 AND pl.ProductColor = 'Red'

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