mysql
Introduction
First Chapter
日期函数
排序中有null字段希望null值置为最后
字符串函数
控制语句
外键约束
Insert
Show语句
函数
cast
convert
总：取得前一次MYSQL操作影响的记录行数
总：联合主键
总: last_insert_id()
3.1 Connecting to and Disconnecting from the Server
3.2 Entering Queries
3.3 Creating and Using a Database
3.3.1 Creating and Selecting a Database
3.3.2 Creating a Table
3.3.3 Loading Data into a Table
3.3.4 Retrieving Information from a Table
3.3.4.1 Selecting All Data
3.3.4.2 Selecting Particular Rows
3.3.4.3 Selecting Particular Columns
3.3.4.4 Sorting Rows
3.3.4.5 Date Calculations
3.3.4.6 Working with NULL Values
3.3.4.7 Pattern Matching
3.3.4.8 Counting Rows
3.3.4.9 Using More Than one Table
3.4 Getting Information About Databases and Tables
3.5 Using mysql in Batch Model
3.6 Examples of Common Queries
3.6.1 The Maximum Value for a Column
3.6.2 The Row Holding the Maximum of a Certain Column
3.6.3 Maximum of Column per Group
3.6.4 The Rows Holding the Group-wise Maximum of a Certain Column
3.6.5 Using User-Defined Variables
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