public override string[] GenerateSql(EvolutionHistoryBuilder genesAffected, IGraphVisitor graph)
{
string createTable;
string head = $"CREATE TABLE [{DatabaseName}].[{SchemaName}].[{TableName}]";
var optimizableGenes = _definitions
.SelectMany(m => graph.PullPrerequisitesForward(m, this, CanOptimize))
.ToImmutableList();
if (optimizableGenes.Any())
{
var definitions = optimizableGenes
.OfType <TableDefinitionGene>()
.Where(d => !d.Dropped)
.Select(d => d.GenerateDefinitionSql());
createTable = $"{head}({string.Join(",", definitions)})";
optimizableGenes = optimizableGenes.AddRange(optimizableGenes
.OfType <CreateColumnGene>()
.SelectMany(d => d.Modifications));
}
else
{
createTable = head;
}
string[] sql =
{
createTable
};
genesAffected.AppendAll(optimizableGenes);
return(sql);
}
public override string[] GenerateRollbackSql(EvolutionHistoryBuilder genesAffected, IGraphVisitor graph)
{
string[] sql =
{
$"DROP TABLE [{DatabaseName}].[{SchemaName}].[{TableName}]"
};
genesAffected.AppendAll(_definitions);
return(sql);
}
public override string[] GenerateSql(EvolutionHistoryBuilder genesAffected, IGraphVisitor graph)
{
var optimizableGenes = _modifications
.SelectMany(m => graph.PullPrerequisitesForward(m, this, CanOptimize))
.ToImmutableList();
if (optimizableGenes.Any())
{
genesAffected.AppendAll(optimizableGenes);
if (optimizableGenes.OfType <DropColumnGene>().Any())
{
return(new string[0]);
}
}
return(CreateColumnSql());
}
