本文整理汇总了C#中DatabaseSchemaReader.SqlGen.DdlGeneratorFactory.DropColumn方法的典型用法代码示例。如果您正苦于以下问题：C# DdlGeneratorFactory.DropColumn方法的具体用法？C# DdlGeneratorFactory.DropColumn怎么用？C# DdlGeneratorFactory.DropColumn使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类DatabaseSchemaReader.SqlGen.DdlGeneratorFactory的用法示例。
在下文中一共展示了DdlGeneratorFactory.DropColumn方法的6个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: TestMySqlWithSchema
public void TestMySqlWithSchema()
{
//arrange
var migration = new DdlGeneratorFactory(SqlType.MySql).MigrationGenerator();
var table = MigrationCommon.CreateTestTable("Orders");
table.SchemaOwner = "dbo";
var column = MigrationCommon.CreateNewColumn();
//act
var sql = migration.DropColumn(table, column);
//assert
Assert.IsTrue(sql.StartsWith("ALTER TABLE `dbo`.`Orders` DROP COLUMN `COUNTRY`", StringComparison.OrdinalIgnoreCase), "names should be quoted correctly");
}示例2: TestOracleNoSchema
public void TestOracleNoSchema()
{
//arrange
var migration = new DdlGeneratorFactory(SqlType.Oracle).MigrationGenerator();
var table = MigrationCommon.CreateTestTable("Orders");
table.SchemaOwner = "dbo";
var column = MigrationCommon.CreateNewColumn();
//act
migration.IncludeSchema = false;
var sql = migration.DropColumn(table, column);
//assert
Assert.IsTrue(sql.StartsWith("ALTER TABLE \"Orders\" DROP COLUMN \"COUNTRY\"", StringComparison.OrdinalIgnoreCase), "names should be quoted correctly");
}示例3: TestSqlServerDropColumnWithDefault
public void TestSqlServerDropColumnWithDefault()
{
//arrange
var migration = new DdlGeneratorFactory(SqlType.SqlServer).MigrationGenerator();
var table = MigrationCommon.CreateTestTable("Orders");
table.SchemaOwner = "dbo";
var column = table.FindColumn("NAME");
column.Length = 40;
column.DefaultValue = "'?'";
//add a default constraint
var df = new DatabaseConstraint { ConstraintType = ConstraintType.Default, Name = "DF_Orders_Name" };
df.Columns.Add("NAME");
table.AddConstraint(df);
//act
var sql = migration.DropColumn(table, column);
//assert
//ALTER TABLE [dbo].[Orders] DROP CONSTRAINT [DF_Orders_Name];
//ALTER TABLE [dbo].[Orders] DROP COLUMN [NAME];
Assert.IsTrue(sql.Contains("DROP CONSTRAINT [DF_Orders_Name]"), "drop constraint");
}示例4: TestSqLite
public void TestSqLite()
{
//arrange
var migration = new DdlGeneratorFactory(SqlType.SQLite).MigrationGenerator();
var table = MigrationCommon.CreateTestTable("Orders");
table.SchemaOwner = "dbo";
var column = MigrationCommon.CreateNewColumn();
//act
var sql = migration.DropColumn(table, column);
//assert
Assert.IsTrue(sql.StartsWith("--", StringComparison.OrdinalIgnoreCase), "Not available in SQLite");
}示例5: TestMigration
public void TestMigration()
{
//arrange
DbProviderFactory factory = null;
try
{
factory = DbProviderFactories.GetFactory(ProviderName);
}
catch (ArgumentException)
{
Assert.Inconclusive("Unable to find System.Data.SqlServerCe.4.0 Data Provider. It may not be installed.");
}
if (!File.Exists(FilePath))
{
Assert.Inconclusive("SqlServerCe4 test requires database file " + FilePath);
}
const string connectionString = "Data Source=\"" + FilePath + "\"";
ProviderChecker.Check(ProviderName, connectionString);
var tableName = MigrationCommon.FindFreeTableName(ProviderName, connectionString);
var migration = new DdlGeneratorFactory(SqlType.SqlServerCe).MigrationGenerator();
var table = MigrationCommon.CreateTestTable(tableName);
var newColumn = MigrationCommon.CreateNewColumn();
var unqiueConstraint = MigrationCommon.CreateUniqueConstraint(newColumn);
var fk = MigrationCommon.CreateForeignKey(table);
var index = MigrationCommon.CreateUniqueIndex(newColumn, tableName);
var createTable = migration.AddTable(table);
var addColumn = migration.AddColumn(table, newColumn);
var addUniqueConstraint = migration.AddConstraint(table, unqiueConstraint);
var addForeignKey = migration.AddConstraint(table, fk);
var addUniqueIndex = migration.AddIndex(table, index);
var dropUniqueIndex = migration.DropIndex(table, index);
var dropForeignKey = migration.DropConstraint(table, fk);
var dropUniqueConstraint = migration.DropConstraint(table, unqiueConstraint);
var dropColumn = migration.DropColumn(table, newColumn);
var dropTable = migration.DropTable(table);
using (new TransactionScope())
{
using (var con = factory.CreateConnection())
{
con.ConnectionString = connectionString;
using (var cmd = con.CreateCommand())
{
con.Open();
Execute(cmd, createTable);
Execute(cmd, addColumn);
Execute(cmd, addUniqueConstraint);
Execute(cmd, addForeignKey);
Execute(cmd, dropForeignKey);
Execute(cmd, dropUniqueConstraint);
Execute(cmd, addUniqueIndex);
Execute(cmd, dropUniqueIndex);
Execute(cmd, dropColumn);
Execute(cmd, dropTable);
}
}
}
}示例6: TestMigration
public void TestMigration()
{
//arrange
var tableName = MigrationCommon.FindFreeTableName(ProviderName, _connectionString);
var migration = new DdlGeneratorFactory(SqlType.SqlServer).MigrationGenerator();
var table = MigrationCommon.CreateTestTable(tableName);
var newColumn = MigrationCommon.CreateNewColumn();
//this creates a nullable column with no default. Normally we automatically create a default.
//ensure it is nullable, as we don't want to create a default which we can't delete
newColumn.Nullable = true;
var unqiueConstraint = MigrationCommon.CreateUniqueConstraint(newColumn);
var fk = MigrationCommon.CreateForeignKey(table);
var index = MigrationCommon.CreateUniqueIndex(newColumn, tableName);
var createTable = migration.AddTable(table);
var addColumn = migration.AddColumn(table, newColumn);
var addUniqueConstraint = migration.AddConstraint(table, unqiueConstraint);
var addForeignKey = migration.AddConstraint(table, fk);
var addUniqueIndex = migration.AddIndex(table, index);
var dropUniqueIndex = migration.DropIndex(table, index);
var dropForeignKey = migration.DropConstraint(table, fk);
var dropUniqueConstraint = migration.DropConstraint(table, unqiueConstraint);
var dropColumn = migration.DropColumn(table, newColumn);
var dropTable = migration.DropTable(table);
var statements = ScriptTools.SplitScript(createTable);
//we need to strip out the "GO" parts from these scripts
using (new TransactionScope())
{
using (var con = _factory.CreateConnection())
{
con.ConnectionString = _connectionString;
using (var cmd = con.CreateCommand())
{
con.Open();
foreach (var statement in statements)
{
//ignore the drop table bit, which has no useful commands
if (statement.Contains(Environment.NewLine + "-- DROP TABLE")) continue;
Console.WriteLine("Executing " + statement);
cmd.CommandText = statement;
cmd.ExecuteNonQuery();
}
Execute(cmd, addColumn);
Execute(cmd, addUniqueConstraint);
Execute(cmd, addForeignKey);
Execute(cmd, dropForeignKey);
Execute(cmd, dropUniqueConstraint);
Execute(cmd, addUniqueIndex);
Execute(cmd, dropUniqueIndex);
Execute(cmd, dropColumn);
Execute(cmd, dropTable);
}
}
}
}