Titlebook: Beginning T-SQL; A Step-by-Step Appro Kathi Kellenberger,Lee Everest Book 2021Latest edition Kathi Kellenberger, Lee Everest 2021 T-SQL.Tra

短暫

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BOAST

Obverse

高興一回

接觸

Building on Subqueries, Common Table Expressions, and Unions,other ways to combine tables in a query. . and . (CTEs) 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.

BUCK

Grouping and Summarizing Data,tions. Chapters 5 and 6 taught you how to write queries with multiple tables so that the data makes sense in applications and reports. Now it’s time to learn about a special type of query, ., used to group and summarize data. You may find that writing aggregate queries is more challenging than the o

Hamper

小蟲

Advanced WHERE 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, . clauses with more than two predicates, and the . function.

仇恨

Interregnum

Managing Transactions,g data: transactions. A . is a unit of work in SQL Server. Most of the time, a transaction is one statement that inserts, updates, or deletes data. It is possible, however, to define an explicit transaction that includes one or more statements. You can also include . statements in a transaction. A t