/// <summary>
/// Get the SQL string to drop this Constraint in the database.
/// </summary>
/// <param name="dialect">The <see cref="Dialect.Dialect"/> to use for SQL rules.</param>
/// <param name="defaultCatalog"></param>
/// <param name="defaultSchema"></param>
/// <returns>
/// A string that contains the SQL to drop this Constraint.
/// </returns>
public override string SqlDropString(Dialect.Dialect dialect, string defaultCatalog, string defaultSchema)
{
string ifExists = dialect.GetIfExistsDropConstraint(Table, Name);
string drop = string.Format("alter table {0}{1}", Table.GetQualifiedName(dialect, defaultCatalog, defaultSchema), dialect.GetDropPrimaryKeyConstraintString(Name));
string end = dialect.GetIfExistsDropConstraintEnd(Table, Name);
return(ifExists + Environment.NewLine + drop + Environment.NewLine + end);
}
public static string BuildSqlDropIndexString(Dialect.Dialect dialect, Table table, string name, string defaultCatalog, string defaultSchema)
{
string ifExists = dialect.GetIfExistsDropConstraint(table, name);
string drop = string.Format("drop index {0}", StringHelper.Qualify(table.GetQualifiedName(dialect, defaultCatalog, defaultSchema), name));
string end = dialect.GetIfExistsDropConstraintEnd(table, name);
return(ifExists + Environment.NewLine + drop + Environment.NewLine + end);
}
public static string BuildSqlDropIndexString(Dialect.Dialect dialect, Table table, string name, string defaultCatalog, string defaultSchema)
{
var catalog = table.GetQuotedCatalog(dialect, defaultCatalog);
var schema = table.GetQuotedSchema(dialect, defaultSchema);
var tableName = table.GetQuotedName(dialect);
return(new StringBuilder()
.AppendLine(dialect.GetIfExistsDropConstraint(catalog, schema, tableName, name))
.Append("drop index ")
.AppendLine(StringHelper.Qualify(table.GetQualifiedName(dialect, defaultCatalog, defaultSchema), name))
.Append(dialect.GetIfExistsDropConstraintEnd(catalog, schema, tableName, name))
.ToString());
}
/// <summary>
/// Get the SQL string to drop this Constraint in the database.
/// </summary>
/// <param name="dialect">The <see cref="Dialect.Dialect"/> to use for SQL rules.</param>
/// <param name="defaultCatalog"></param>
/// <param name="defaultSchema"></param>
/// <returns>
/// A string that contains the SQL to drop this Constraint.
/// </returns>
public override string SqlDropString(Dialect.Dialect dialect, string defaultCatalog, string defaultSchema)
{
var catalog = Table.GetQuotedCatalog(dialect, defaultCatalog);
var schema = Table.GetQuotedSchema(dialect, defaultSchema);
var tableName = Table.GetQuotedName(dialect);
return(new StringBuilder()
.AppendLine(dialect.GetIfExistsDropConstraint(catalog, schema, tableName, Name))
.Append("alter table ")
.Append(Table.GetQualifiedName(dialect, defaultCatalog, defaultSchema))
.AppendLine(dialect.GetDropPrimaryKeyConstraintString(Name))
.Append(dialect.GetIfExistsDropConstraintEnd(catalog, schema, tableName, Name))
.ToString());
}
/// <summary>
/// Generates the SQL string to drop this Constraint in the database.
/// </summary>
/// <param name="dialect">The <see cref="Dialect.Dialect"/> to use for SQL rules.</param>
/// <param name="defaultSchema"></param>
/// <param name="defaultCatalog"></param>
/// <returns>
/// A string that contains the SQL to drop this Constraint.
/// </returns>
public virtual string SqlDropString(Dialect.Dialect dialect, string defaultCatalog, string defaultSchema)
{
if (IsGenerated(dialect))
{
string ifExists = dialect.GetIfExistsDropConstraint(Table, Name);
string drop =
string.Format("alter table {0} drop constraint {1}", Table.GetQualifiedName(dialect, defaultCatalog, defaultSchema), Name);
string end = dialect.GetIfExistsDropConstraintEnd(Table, Name);
return(ifExists + System.Environment.NewLine + drop + System.Environment.NewLine + end);
}
else
{
return(null);
}
}
/// <summary>
/// Generates the SQL string to drop this Constraint in the database.
/// </summary>
/// <param name="dialect">The <see cref="Dialect.Dialect"/> to use for SQL rules.</param>
/// <param name="defaultSchema"></param>
/// <param name="defaultCatalog"></param>
/// <returns>
/// A string that contains the SQL to drop this Constraint.
/// </returns>
public virtual string SqlDropString(Dialect.Dialect dialect, string defaultCatalog, string defaultSchema)
{
if (!IsGenerated(dialect))
{
return(null);
}
var catalog = Table.GetQuotedCatalog(dialect, defaultCatalog);
var schema = Table.GetQuotedSchema(dialect, defaultSchema);
var tableName = Table.GetQuotedName(dialect);
return(new StringBuilder()
.AppendLine(dialect.GetIfExistsDropConstraint(catalog, schema, tableName, Name))
.Append("alter table ")
.Append(Table.GetQualifiedName(dialect, defaultCatalog, defaultSchema))
.Append(" drop constraint ")
.AppendLine(Name)
.Append(dialect.GetIfExistsDropConstraintEnd(catalog, schema, tableName, Name))
.ToString());
}
