meditation
发表于 2025-3-26 22:05:35
Manipulating Data,es employees, and the payroll department writes checks. Automated processes periodically load new data into reporting databases, such as data warehouses, and into production systems. Users and processes also update existing rows or delete rows from tables.
兽群
发表于 2025-3-27 05:04:01
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pantomime
发表于 2025-3-27 06:11:44
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空中
发表于 2025-3-27 09:44:40
Getting Started, Structured Query Language (SQL) for SQL Server. T-SQL is the language that is most often used to extract or modify data stored in an SQL Server database, regardless of which application or tool you use. SQL Server 2014 T-SQL is based on standards created by the American National Standards Institute
Intruder
发表于 2025-3-27 17:30:35
Using Built-In Functions and Expressions,ow the data is displayed, filtered, or ordered. To create expressions in T-SQL, you use functions and operators along with literal values and columns. The reasons for using expressions in T-SQL code are many. For example, you may want to display only the year of a column of the . data type on a repo
歌唱队
发表于 2025-3-27 20:07:36
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enhance
发表于 2025-3-27 22:02:33
Building on Subqueries, Common Table Expressions, and Unions,other ways to combine tables in a query. . and . (CTE) allow you to isolate the logic of complex queries. . allow you to combine the results of two independent queries into one result set. The first thing you will learn in this chapter is how to substitute a query for a hard-coded . list.
愤世嫉俗者
发表于 2025-3-28 04:13:27
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小卷发
发表于 2025-3-28 07:31:30
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Proclaim
发表于 2025-3-28 11:23:59
Advanced , Clauses,, however, there is still more to learn. This chapter will discuss using the comparison operator . and matching against a partial value or a pattern, full-text search, and . clauses with more than two predicates and the . function.