厌氧
发表于 2025-3-21 20:01:48
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Insubordinate
发表于 2025-3-21 23:53:41
Chapter 4: Querying from Multiple Tables,It is the rare database that has all its data in a single table. Data tends to be spread over multiple tables in ways that optimize storage and ensure consistency and integrity. Part of your job when writing a query is to deploy and link together T-SQL operations that can operate across tables in order to generate needed business results.
Mri485
发表于 2025-3-22 03:01:38
Chapter 5: Aggregations and Grouping,Aggregate functions are used to perform a calculation on one or more values, and the result is a single value. If your query has any columns with nonwindowed aggregate functions, then a . clause is required for the query.
性满足
发表于 2025-3-22 07:46:52
Chapter 8: Inserting, Updating, Deleting,In this chapter, I will cover how to modify data using the Transact-SQL ., ., ., . statements. I’ll review the basics of each statement and cover specific techniques such as inserting data returned from a stored procedure and outputting the affected rows of a data modification.
开花期女
发表于 2025-3-22 10:13:05
Chapter 9: Working with Strings,This next set of recipes demonstrates SQL Server’s many string functions. String functions provide a multitude of options for your Transact-SQL programming, allowing for string cleanup, conversion between ASCII and regular characters, pattern searches, removal of trailing blanks, and much more.
GUEER
发表于 2025-3-22 16:57:29
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违抗
发表于 2025-3-22 19:59:12
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土产
发表于 2025-3-22 21:18:11
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antenna
发表于 2025-3-23 02:26:02
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不连贯
发表于 2025-3-23 08:42:30
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