Add SHOW CREATE QUOTA statement parsing (#33)

Author: kyleconroy

ast/ast.go

@@ -629,6 +629,16 @@ func (s *ShowPrivilegesQuery) Pos() token.Position { return s.Position }
 func (s *ShowPrivilegesQuery) End() token.Position { return s.Position }
 func (s *ShowPrivilegesQuery) statementNode()      {}
 
+// ShowCreateQuotaQuery represents a SHOW CREATE QUOTA statement.
+type ShowCreateQuotaQuery struct {
+	Position token.Position `json:"-"`
+	Name     string         `json:"name,omitempty"`
+}
+
+func (s *ShowCreateQuotaQuery) Pos() token.Position { return s.Position }
+func (s *ShowCreateQuotaQuery) End() token.Position { return s.Position }
+func (s *ShowCreateQuotaQuery) statementNode()      {}
+
 // -----------------------------------------------------------------------------
 // Expressions
 

internal/explain/explain.go

@@ -117,6 +117,8 @@ func Node(sb *strings.Builder, node interface{}, depth int) {
 		explainShowQuery(sb, n, indent)
 	case *ast.ShowPrivilegesQuery:
 		fmt.Fprintf(sb, "%sShowPrivilegesQuery\n", indent)
+	case *ast.ShowCreateQuotaQuery:
+		fmt.Fprintf(sb, "%sSHOW CREATE QUOTA query\n", indent)
 	case *ast.UseQuery:
 		explainUseQuery(sb, n, indent)
 	case *ast.DescribeQuery:

parser/parser.go

@@ -2642,16 +2642,20 @@ func (p *Parser) parseShow() ast.Statement {
 		if p.currentIs(token.DATABASE) {
 			show.ShowType = ast.ShowCreateDB
 			p.nextToken()
+		} else if p.currentIs(token.IDENT) && strings.ToUpper(p.current.Value) == "QUOTA" {
+			// SHOW CREATE QUOTA <name>
+			p.nextToken()
+			name := ""
+			if p.currentIs(token.IDENT) || p.current.Token.IsKeyword() {
+				name = p.current.Value
+				p.nextToken()
+			}
+			return &ast.ShowCreateQuotaQuery{Position: pos, Name: name}
 		} else {
 			show.ShowType = ast.ShowCreate
-			// Handle SHOW CREATE TABLE, SHOW CREATE QUOTA, etc.
+			// Handle SHOW CREATE TABLE, etc.
 			if p.currentIs(token.TABLE) {
 				p.nextToken()
-			} else if p.currentIs(token.DEFAULT) || (p.currentIs(token.IDENT) && strings.ToUpper(p.current.Value) == "QUOTA") {
-				// SHOW CREATE QUOTA default - skip QUOTA keyword
-				if p.currentIs(token.IDENT) && strings.ToUpper(p.current.Value) == "QUOTA" {
-					p.nextToken()
-				}
 			}
 		}
 	case token.SETTINGS:

parser/testdata/01033_quota_dcl/metadata.json

@@ -1 +1 @@
-{"todo": true}
+{}