c# - 正则表达式 - 订购多行 SQL 字符串

Question

给定一个字符串，例如:

CREATE TABLE [dbo].[Table1] (
    [Id] [int] NOT NULL,
    [Title] [nvarchar](255) NULL
)

ALTER TABLE [dbo].[Table1] ADD
    CONSTRAINT [PK_Table1] PRIMARY KEY CLUSTERED ([Id])

INSERT INTO [dbo].[Table1] ([Id], [Title]) VALUES ('Home', NULL)

CREATE TABLE [dbo].[Table2] (
    [Id] [int] NOT NULL,
    [Title] [nvarchar](255) NULL
)

...

我将如何对语句进行排序，以便 CREATE TABLE 位位于顶部。我猜我将不得不使用正则表达式，但我不确定我从那里去哪里。

非常感谢您的帮助。谢谢

Answer 1

享受 LINQ 带来的乐趣。

var sql = @"CREATE TABLE [dbo].[Table1] (
            [Id] [int] NOT NULL,
            [Title] [nvarchar](255) NULL
        )

        ALTER TABLE [dbo].[Table1] ADD
            CONSTRAINT [PK_Table1] PRIMARY KEY CLUSTERED ([Id])

        INSERT INTO [dbo].[Table1] ([Id], [Title]) VALUES ('Home', NULL)

        CREATE TABLE [dbo].[Table2] (
            [Id] [int] NOT NULL,
            [Title] [nvarchar](255) NULL
        )
        ";
var statementOrder = new[] { "CREATE", "ALTER", "INSERT" };
var statements = from statement in Regex.Split(sql, "\n\r")
              let trimStatement = statement.Trim()
              let statementType = trimStatement.Substring(0, trimStatement.IndexOf(' '))
              orderby Array.IndexOf(statementOrder, statementType)
              select trimStatement;
var newSql = String.Join("\n\r", statements.ToArray());