Fixed: failed to parse WHERE / GROUP BY clauses in a SELECT statement…

… without a FROM table (pingcap#587)
lyonzhi · Oct 27, 2019 · 8f42cd7 · 8f42cd7
1 parent fad2389
commit 8f42cd7
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Showing 3 changed files with 3,282 additions and 3,332 deletions.
diff --git a/ast/dml.go b/ast/dml.go
@@ -864,9 +864,6 @@ func (n *SelectStmt) Restore(ctx *RestoreCtx) error {
 		}
 	}
 
-	if n.From == nil && n.Where != nil {
-		ctx.WriteKeyWord(" FROM DUAL")
-	}
 	if n.Where != nil {
 		ctx.WriteKeyWord(" WHERE ")
 		if err := n.Where.Restore(ctx); err != nil {