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35 lines
816 B
35 lines
816 B
using System.Text;
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namespace Connected.Data.Schema.Sql
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{
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internal class DefaultAdd : ColumnTransaction
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{
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public DefaultAdd(ISchemaColumn column, string tableName) : base(column)
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{
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TableName = tableName;
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}
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private string TableName { get; }
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protected override async Task OnExecute()
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{
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await Context.Execute(CommandText);
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}
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private string CommandText
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{
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get
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{
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var text = new StringBuilder();
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var defValue = SchemaExtensions.ParseDefaultValue(Column.DefaultValue);
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text.AppendLine($"ALTER TABLE {Escape(Context.Schema.SchemaName(), TableName)}");
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text.AppendLine($"ADD CONSTRAINT {Context.GenerateConstraintName(Context.Schema.SchemaName(), TableName, ConstraintNameType.Default)} DEFAULT {defValue} FOR {Column.Name}");
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return text.ToString();
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}
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}
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}
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}
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