dolphi: Add list of builtin functions (#795)

Author: kyleconroy

internal/endtoend/testdata/count_star/mysql/go/query.sql.go

@@ -1,4 +1,7 @@
 CREATE TABLE bar (id serial not null);
 
--- name: CountStar :one
+-- name: CountStarLower :one
 SELECT count(*) FROM bar;
+
+-- name: CountStarUpper :one
+SELECT COUNT(*) FROM bar;

internal/endtoend/testdata/count_star/mysql/query.sql

@@ -1,4 +1,7 @@
 CREATE TABLE bar (id serial not null);
 
--- name: CountStar :one
+-- name: CountStarLower :one
 SELECT count(*) FROM bar;
+
+-- name: CountStarUpper :one
+SELECT COUNT(*) FROM bar;

internal/endtoend/testdata/count_star/postgresql/go/query.sql.go

@@ -1,7 +1,6 @@
 package dolphin
 
 import (
-	"github.com/kyleconroy/sqlc/internal/sql/ast"
 	"github.com/kyleconroy/sqlc/internal/sql/catalog"
 )
 
@@ -10,25 +9,7 @@ func NewCatalog() *catalog.Catalog {
 	return &catalog.Catalog{
 		DefaultSchema: def,
 		Schemas: []*catalog.Schema{
-			&catalog.Schema{
-				Name: def,
-				Funcs: []*catalog.Function{
-					{
-						Name: "count",
-						Args: []*catalog.Argument{
-							{
-								Type: &ast.TypeName{Name: "any"},
-							},
-						},
-						ReturnType: &ast.TypeName{Name: "bigint"},
-					},
-					{
-						Name:       "count",
-						Args:       []*catalog.Argument{},
-						ReturnType: &ast.TypeName{Name: "bigint"},
-					},
-				},
-			},
+			defaultSchema(def),
 		},
 		Extensions: map[string]struct{}{},
 	}

internal/endtoend/testdata/count_star/postgresql/query.sql

@@ -3,6 +3,7 @@ package dolphin
 import (
 	"fmt"
 	"log"
+	"strings"
 
 	pcast "github.com/pingcap/parser/ast"
 	"github.com/pingcap/parser/opcode"
@@ -322,7 +323,7 @@ func (c *cc) convertFieldList(n *pcast.FieldList) *ast.List {
 
 func (c *cc) convertFuncCallExpr(n *pcast.FuncCallExpr) *ast.FuncCall {
 	schema := n.Schema.String()
-	name := n.FnName.String()
+	name := strings.ToLower(n.FnName.String())
 
 	// TODO: Deprecate the usage of Funcname
 	items := []ast.Node{}
@@ -494,14 +495,15 @@ func (c *cc) convertAdminStmt(n *pcast.AdminStmt) ast.Node {
 }
 
 func (c *cc) convertAggregateFuncExpr(n *pcast.AggregateFuncExpr) *ast.FuncCall {
+	name := strings.ToLower(n.F)
 	fn := &ast.FuncCall{
 		Func: &ast.FuncName{
-			Name: n.F,
+			Name: name,
 		},
 		Funcname: &ast.List{
 			Items: []ast.Node{
 				&ast.String{
-					Str: n.F,
+					Str: name,
 				},
 			},
 		},