T-SQL Data Types (Quick Overview)
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This document discusses data types in databases. It describes numeric, character, temporal, and miscellaneous data types. It also covers precision, scale, length, custom data types, special column types like identity and timestamp columns. The document explains CAST and CONVERT functions that explicitly convert data between types and provides syntax examples. It demonstrates converting date/time values to different formats and casting between different data types.
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Syllabus
Chapter-1
Introduction to objective, scope and outcome the subject
Chapter 2
Introduction: Scope and Specialization of Civil Engineering, Role of civil Engineer in Society, Impact of infrastructural development on economy of country.
Chapter 3
Surveying: Object Principles & Types of Surveying; Site Plans, Plans & Maps; Scales & Unit of different Measurements.
Linear Measurements: Instruments used. Linear Measurement by Tape, Ranging out Survey Lines and overcoming Obstructions; Measurements on sloping ground; Tape corrections, conventional symbols. Angular Measurements: Instruments used; Introduction to Compass Surveying, Bearings and Longitude & Latitude of a Line, Introduction to total station.
Levelling: Instrument used Object of levelling, Methods of levelling in brief, and Contour maps.
Chapter 4
Buildings: Selection of site for Buildings, Layout of Building Plan, Types of buildings, Plinth area, carpet area, floor space index, Introduction to building byelaws, concept of sun light & ventilation. Components of Buildings & their functions, Basic concept of R.C.C., Introduction to types of foundation
Chapter 5
Transportation: Introduction to Transportation Engineering; Traffic and Road Safety: Types and Characteristics of Various Modes of Transportation; Various Road Traffic Signs, Causes of Accidents and Road Safety Measures.
Chapter 6
Environmental Engineering: Environmental Pollution, Environmental Acts and Regulations, Functional Concepts of Ecology, Basics of Species, Biodiversity, Ecosystem, Hydrological Cycle; Chemical Cycles: Carbon, Nitrogen & Phosphorus; Energy Flow in Ecosystems.
Water Pollution: Water Quality standards, Introduction to Treatment & Disposal of Waste Water. Reuse and Saving of Water, Rain Water Harvesting. Solid Waste Management: Classification of Solid Waste, Collection, Transportation and Disposal of Solid. Recycling of Solid Waste: Energy Recovery, Sanitary Landfill, On-Site Sanitation. Air & Noise Pollution: Primary and Secondary air pollutants, Harmful effects of Air Pollution, Control of Air Pollution. . Noise Pollution Harmful Effects of noise pollution, control of noise pollution, Global warming & Climate Change, Ozone depletion, Greenhouse effect
Text Books:
1. Palancharmy, Basic Civil Engineering, McGraw Hill publishers.
2. Satheesh Gopi, Basic Civil Engineering, Pearson Publishers.
3. Ketki Rangwala Dalal, Essentials of Civil Engineering, Charotar Publishing House.
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- 1. DATA TYPES VERSION 1.0 By Naji El Kotob
- 2. Data Type? Indicates the type of data the field will contain.
- 3. Data Types Numeric data types Character data types Temporal (date and/or time) data types Miscellaneous data types
- 4. Precision, Scale, and Length Precision is the number of digits in a number. Scale is the number of digits to the right of the decimal point in a number. For example, the number 123.45 has a precision of 5 and a scale of 2.
- 5. Custom Data Type (Alias) CREATE TYPE dbo.ProjectCode FROM char(6) NOT NULL
- 6. Special Column Types Computed columns Identity columns An Identity column is often used for primary key values UniqueIdentifier columns Virtual columns that are not physically stored in the table Guaranteed to be universally unique TimeStamp columns Guaranteed to be unique within a database
- 7. Converts an expression of one data type to another.
- 8. Source: MSDN
- 9. CAST and CONVERT Explicitly converts an expression of one data type to another.
- 10. CAST and CONVERT: Syntax CAST ( expression AS data_type ) CONVERT ( data_type [ ( length ) ] , expression [ , style ] )
- 11. CAST and CONVERT: DEMO
- 12. PRINT 'Date/time in format MON DD YYYY HH:MI AM (OR PM): ' + CONVERT(CHAR(19),GETDATE()) PRINT '6) Date/time in format DD MON YYYY HH:MM:SS:MMM(24H): ' + CONVERT(CHAR(24),GETDATE(),113)
- 13. DECLARE @d DATETIME SET @d = '2008-02-09 10:31 PM' -- Length 19 SELECT REPLACE(CONVERT(CHAR(16),@d,120),'-','/')
- 14. DECLARE @d DATETIME SET @d = '2008-02-09 10:31 PM' SELECT DATENAME(DAY,@d)
- 15. DECLARE @id char(4) SET @id = '123' SET @id = CAST(@id AS int) + 1 SELECT @id
- 16. SELECT CAST(10.6496 AS int)
- 17. SELECT CAST(15.279769 AS money)
- 18. References Data Types http://technet.microsoft.com/enus/library/ms187752.aspx Cast and Convert http://msdn.microsoft.com/enus/library/ms187928.aspx