private void ProcessHint(OptimizerHint Hint, SelectStatement SelStatement)
{
switch (Hint.HintKind)
{
case OptimizerHintKind.OrderGroup:
case OptimizerHintKind.MergeJoin:
case OptimizerHintKind.HashJoin:
case OptimizerHintKind.LoopJoin:
case OptimizerHintKind.ConcatUnion:
case OptimizerHintKind.HashUnion:
case OptimizerHintKind.MergeUnion:
case OptimizerHintKind.KeepUnion:
_smells.SendFeedBack(4, SelStatement);
break;
}
}
private void ProcessHint(OptimizerHint Hint, SelectStatement SelStatement)
{
switch (Hint.HintKind)
{
case OptimizerHintKind.OrderGroup:
case OptimizerHintKind.MergeJoin:
case OptimizerHintKind.HashJoin:
case OptimizerHintKind.LoopJoin:
case OptimizerHintKind.ConcatUnion:
case OptimizerHintKind.HashUnion:
case OptimizerHintKind.MergeUnion:
case OptimizerHintKind.KeepUnion:
_smells.SendFeedBack(4, SelStatement);
break;
}
}
public override void Visit(OptimizerHint node) { this.action(node); }
public override void ExplicitVisit(OptimizerHint fragment)
{
_fragments.Add(fragment);
}
// Turns T-SQL OptimizerHint into string
internal static string OptimizerHintToString(OptimizerHint hint)
{
var sb = new StringBuilder(1024);
// Literal hint
if (hint is LiteralOptimizerHint)
{
sb.Append(TsqlFragmentToString.OptimizerHintKind(hint.HintKind));
var loh = hint as LiteralOptimizerHint;
// TODO: Only support numeric literal
sb.AppendFormat(" {0}", loh.Value.Value);
}
// OptimizeFor hint
else if (hint is OptimizeForOptimizerHint)
{
var ooh = hint as OptimizeForOptimizerHint;
sb.AppendFormat("OPTIMIZE FOR ");
if (ooh.IsForUnknown)
{
sb.Append("UNKNOWN");
}
else
{
sb.Append("(");
for (int i = 0; i < ooh.Pairs.Count; i++)
{
if (i > 0)
{
sb.Append(", ");
}
sb.Append(ooh.Pairs[i].Variable.Name);
// TODO: Only support value expression
if (ooh.Pairs[i].Value != null && ooh.Pairs[i].Value is Literal)
{
if (ooh.Pairs[i].Value is StringLiteral)
{
sb.AppendFormat(" = '{0}'", ((Literal)ooh.Pairs[i].Value).Value);
}
else
{
sb.AppendFormat(" = {0}", ((Literal)ooh.Pairs[i].Value).Value);
}
}
else
{
sb.Append(" UNKNOWN");
}
}
sb.Append(")");
}
}
// Table hint
else if (hint is TableHintsOptimizerHint)
{
var toh = hint as TableHintsOptimizerHint;
sb.Append("TABLE HINT ");
sb.Append("(");
// sb.Append(TsqlFragmentToString.WSchemaObjectName(toh.ObjectName));
for (int i = 0; i < toh.TableHints.Count; i++)
{
if (i > 0)
{
sb.Append(", ");
}
// TODO: Table hint in WSQL Syntax tree is incomplete
sb.AppendFormat("@{0}", toh.TableHints[i].HintKind.ToString());
}
sb.Append(")");
}
// Regular hint
else
{
sb.Append(TsqlFragmentToString.OptimizerHintKind(hint.HintKind));
}
return(sb.ToString());
}
// Turns T-SQL OptimizerHint into string
internal static string OptimizerHintToString(OptimizerHint hint)
{
var sb = new StringBuilder(1024);
// Literal hint
if (hint is LiteralOptimizerHint)
{
sb.Append(TsqlFragmentToString.OptimizerHintKind(hint.HintKind));
var loh = hint as LiteralOptimizerHint;
// TODO: Only support numeric literal
sb.AppendFormat(" {0}",loh.Value.Value);
}
// OptimizeFor hint
else if (hint is OptimizeForOptimizerHint)
{
var ooh = hint as OptimizeForOptimizerHint;
sb.AppendFormat("OPTIMIZE FOR ");
if (ooh.IsForUnknown)
sb.Append("UNKNOWN");
else
{
sb.Append("(");
for (int i = 0; i < ooh.Pairs.Count; i++)
{
if (i > 0)
sb.Append(", ");
sb.Append(ooh.Pairs[i].Variable.Name);
// TODO: Only support value expression
if (ooh.Pairs[i].Value != null && ooh.Pairs[i].Value is Literal)
{
if (ooh.Pairs[i].Value is StringLiteral)
sb.AppendFormat(" = '{0}'", ((Literal)ooh.Pairs[i].Value).Value);
else
sb.AppendFormat(" = {0}", ((Literal)ooh.Pairs[i].Value).Value);
}
else
sb.Append(" UNKNOWN");
}
sb.Append(")");
}
}
// Table hint
else if (hint is TableHintsOptimizerHint)
{
var toh = hint as TableHintsOptimizerHint;
sb.Append("TABLE HINT ");
sb.Append("(");
sb.Append(TsqlFragmentToString.SchemaObjectName(toh.ObjectName));
for (int i = 0; i < toh.TableHints.Count; i++)
{
if (i > 0)
sb.Append(", ");
// TODO: Table hint in WSQL Syntax tree is incomplete
sb.AppendFormat("@{0}", toh.TableHints[i].HintKind.ToString());
}
sb.Append(")");
}
// Regular hint
else
{
sb.Append(TsqlFragmentToString.OptimizerHintKind(hint.HintKind));
}
return sb.ToString();
}
public override void ExplicitVisit(OptimizerHint node)
{
this.Hints.Add(node);
}
