*: unify "See url" format (pingcap#1391)

* *: unify "See url" format

ast/ddl.go

@@ -60,7 +60,7 @@ type DatabaseOption struct {
 }
 
 // CreateDatabaseStmt is a statement to create a database.
-// See: https://dev.mysql.com/doc/refman/5.7/en/create-database.html
+// See https://dev.mysql.com/doc/refman/5.7/en/create-database.html
 type CreateDatabaseStmt struct {
 	ddlNode
 
@@ -80,7 +80,7 @@ func (n *CreateDatabaseStmt) Accept(v Visitor) (Node, bool) {
 }
 
 // DropDatabaseStmt is a statement to drop a database and all tables in the database.
-// See: https://dev.mysql.com/doc/refman/5.7/en/drop-database.html
+// See https://dev.mysql.com/doc/refman/5.7/en/drop-database.html
 type DropDatabaseStmt struct {
 	ddlNode
 
@@ -122,7 +122,7 @@ func (n *IndexColName) Accept(v Visitor) (Node, bool) {
 }
 
 // ReferenceDef is used for parsing foreign key reference option from SQL.
-// See: http://dev.mysql.com/doc/refman/5.7/en/create-table-foreign-keys.html
+// See http://dev.mysql.com/doc/refman/5.7/en/create-table-foreign-keys.html
 type ReferenceDef struct {
 	node
 
@@ -275,7 +275,7 @@ func (n *ColumnOption) Accept(v Visitor) (Node, bool) {
 //  | index_type
 //  | WITH PARSER parser_name
 //  | COMMENT 'string'
-// See: http://dev.mysql.com/doc/refman/5.7/en/create-table.html
+// See http://dev.mysql.com/doc/refman/5.7/en/create-table.html
 type IndexOption struct {
 	node
 
@@ -390,7 +390,7 @@ func (n *ColumnDef) Accept(v Visitor) (Node, bool) {
 }
 
 // CreateTableStmt is a statement to create a table.
-// See: https://dev.mysql.com/doc/refman/5.7/en/create-table.html
+// See https://dev.mysql.com/doc/refman/5.7/en/create-table.html
 type CreateTableStmt struct {
 	ddlNode
 
@@ -431,7 +431,7 @@ func (n *CreateTableStmt) Accept(v Visitor) (Node, bool) {
 }
 
 // DropTableStmt is a statement to drop one or more tables.
-// See: https://dev.mysql.com/doc/refman/5.7/en/drop-table.html
+// See https://dev.mysql.com/doc/refman/5.7/en/drop-table.html
 type DropTableStmt struct {
 	ddlNode
 
@@ -457,7 +457,7 @@ func (n *DropTableStmt) Accept(v Visitor) (Node, bool) {
 }
 
 // CreateIndexStmt is a statement to create an index.
-// See: https://dev.mysql.com/doc/refman/5.7/en/create-index.html
+// See https://dev.mysql.com/doc/refman/5.7/en/create-index.html
 type CreateIndexStmt struct {
 	ddlNode
 
@@ -490,7 +490,7 @@ func (n *CreateIndexStmt) Accept(v Visitor) (Node, bool) {
 }
 
 // DropIndexStmt is a statement to drop the index.
-// See: https://dev.mysql.com/doc/refman/5.7/en/drop-index.html
+// See https://dev.mysql.com/doc/refman/5.7/en/drop-index.html
 type DropIndexStmt struct {
 	ddlNode
 
@@ -658,7 +658,7 @@ func (n *AlterTableSpec) Accept(v Visitor) (Node, bool) {
 }
 
 // AlterTableStmt is a statement to change the structure of a table.
-// See: https://dev.mysql.com/doc/refman/5.7/en/alter-table.html
+// See https://dev.mysql.com/doc/refman/5.7/en/alter-table.html
 type AlterTableStmt struct {
 	ddlNode
 
@@ -689,7 +689,7 @@ func (n *AlterTableStmt) Accept(v Visitor) (Node, bool) {
 }
 
 // TruncateTableStmt is a statement to empty a table completely.
-// See: https://dev.mysql.com/doc/refman/5.7/en/truncate-table.html
+// See https://dev.mysql.com/doc/refman/5.7/en/truncate-table.html
 type TruncateTableStmt struct {
 	ddlNode
 

ast/dml.go

@@ -437,7 +437,7 @@ func (n *OrderByClause) Accept(v Visitor) (Node, bool) {
 }
 
 // SelectStmt represents the select query node.
-// See: https://dev.mysql.com/doc/refman/5.7/en/select.html
+// See https://dev.mysql.com/doc/refman/5.7/en/select.html
 type SelectStmt struct {
 	dmlNode
 	resultSetNode
@@ -554,7 +554,7 @@ func (n *UnionSelectList) Accept(v Visitor) (Node, bool) {
 }
 
 // UnionStmt represents "union statement"
-// See: https://dev.mysql.com/doc/refman/5.7/en/union.html
+// See https://dev.mysql.com/doc/refman/5.7/en/union.html
 type UnionStmt struct {
 	dmlNode
 	resultSetNode
@@ -626,7 +626,7 @@ func (n *Assignment) Accept(v Visitor) (Node, bool) {
 }
 
 // Priority const values.
-// See: https://dev.mysql.com/doc/refman/5.7/en/insert.html
+// See https://dev.mysql.com/doc/refman/5.7/en/insert.html
 const (
 	NoPriority = iota
 	LowPriority
@@ -635,7 +635,7 @@ const (
 )
 
 // InsertStmt is a statement to insert new rows into an existing table.
-// See: https://dev.mysql.com/doc/refman/5.7/en/insert.html
+// See https://dev.mysql.com/doc/refman/5.7/en/insert.html
 type InsertStmt struct {
 	dmlNode
 
@@ -705,7 +705,7 @@ func (n *InsertStmt) Accept(v Visitor) (Node, bool) {
 }
 
 // DeleteStmt is a statement to delete rows from table.
-// See: https://dev.mysql.com/doc/refman/5.7/en/delete.html
+// See https://dev.mysql.com/doc/refman/5.7/en/delete.html
 type DeleteStmt struct {
 	dmlNode
 
@@ -768,7 +768,7 @@ func (n *DeleteStmt) Accept(v Visitor) (Node, bool) {
 }
 
 // UpdateStmt is a statement to update columns of existing rows in tables with new values.
-// See: https://dev.mysql.com/doc/refman/5.7/en/update.html
+// See https://dev.mysql.com/doc/refman/5.7/en/update.html
 type UpdateStmt struct {
 	dmlNode
 
@@ -867,7 +867,7 @@ const (
 )
 
 // ShowStmt is a statement to provide information about databases, tables, columns and so on.
-// See: https://dev.mysql.com/doc/refman/5.7/en/show.html
+// See https://dev.mysql.com/doc/refman/5.7/en/show.html
 type ShowStmt struct {
 	dmlNode
 	resultSetNode

ast/expressions.go

@@ -280,9 +280,9 @@ func (n *SubqueryExpr) GetResultFields() []*ResultField {
 }
 
 // CompareSubqueryExpr is the expression for "expr cmp (select ...)".
-// See: https://dev.mysql.com/doc/refman/5.7/en/comparisons-using-subqueries.html
-// See: https://dev.mysql.com/doc/refman/5.7/en/any-in-some-subqueries.html
-// See: https://dev.mysql.com/doc/refman/5.7/en/all-subqueries.html
+// See https://dev.mysql.com/doc/refman/5.7/en/comparisons-using-subqueries.html
+// See https://dev.mysql.com/doc/refman/5.7/en/any-in-some-subqueries.html
+// See https://dev.mysql.com/doc/refman/5.7/en/all-subqueries.html
 type CompareSubqueryExpr struct {
 	exprNode
 	// L is the left expression
@@ -385,7 +385,7 @@ func (n *DefaultExpr) Accept(v Visitor) (Node, bool) {
 }
 
 // ExistsSubqueryExpr is the expression for "exists (select ...)".
-// See: https://dev.mysql.com/doc/refman/5.7/en/exists-and-not-exists-subqueries.html
+// See https://dev.mysql.com/doc/refman/5.7/en/exists-and-not-exists-subqueries.html
 type ExistsSubqueryExpr struct {
 	exprNode
 	// Sel is the subquery, may be rewritten to other type of expression.

ast/functions.go

@@ -149,12 +149,12 @@ type DateArithType byte
 
 const (
 	// DateAdd is to run adddate or date_add function option.
-	// See: https://dev.mysql.com/doc/refman/5.7/en/date-and-time-functions.html#function_adddate
-	// See: https://dev.mysql.com/doc/refman/5.7/en/date-and-time-functions.html#function_date-add
+	// See https://dev.mysql.com/doc/refman/5.7/en/date-and-time-functions.html#function_adddate
+	// See https://dev.mysql.com/doc/refman/5.7/en/date-and-time-functions.html#function_date-add
 	DateAdd DateArithType = iota + 1
 	// DateSub is to run subdate or date_sub function option.
-	// See: https://dev.mysql.com/doc/refman/5.7/en/date-and-time-functions.html#function_subdate
-	// See: https://dev.mysql.com/doc/refman/5.7/en/date-and-time-functions.html#function_date-sub
+	// See https://dev.mysql.com/doc/refman/5.7/en/date-and-time-functions.html#function_subdate
+	// See https://dev.mysql.com/doc/refman/5.7/en/date-and-time-functions.html#function_date-sub
 	DateSub
 )
 

ast/misc.go

@@ -51,7 +51,7 @@ type TypeOpt struct {
 }
 
 // FloatOpt is used for parsing floating-point type option from SQL.
-// See: http://dev.mysql.com/doc/refman/5.7/en/floating-point-types.html
+// See http://dev.mysql.com/doc/refman/5.7/en/floating-point-types.html
 type FloatOpt struct {
 	Flen    int
 	Decimal int
@@ -68,7 +68,7 @@ type AuthOption struct {
 
 // ExplainStmt is a statement to provide information about how is SQL statement executed
 // or get columns information in a table.
-// See: https://dev.mysql.com/doc/refman/5.7/en/explain.html
+// See https://dev.mysql.com/doc/refman/5.7/en/explain.html
 type ExplainStmt struct {
 	stmtNode
 
@@ -92,7 +92,7 @@ func (n *ExplainStmt) Accept(v Visitor) (Node, bool) {
 
 // PrepareStmt is a statement to prepares a SQL statement which contains placeholders,
 // and it is executed with ExecuteStmt and released with DeallocateStmt.
-// See: https://dev.mysql.com/doc/refman/5.7/en/prepare.html
+// See https://dev.mysql.com/doc/refman/5.7/en/prepare.html
 type PrepareStmt struct {
 	stmtNode
 
@@ -119,7 +119,7 @@ func (n *PrepareStmt) Accept(v Visitor) (Node, bool) {
 }
 
 // DeallocateStmt is a statement to release PreparedStmt.
-// See: https://dev.mysql.com/doc/refman/5.7/en/deallocate-prepare.html
+// See https://dev.mysql.com/doc/refman/5.7/en/deallocate-prepare.html
 type DeallocateStmt struct {
 	stmtNode
 
@@ -137,7 +137,7 @@ func (n *DeallocateStmt) Accept(v Visitor) (Node, bool) {
 }
 
 // ExecuteStmt is a statement to execute PreparedStmt.
-// See: https://dev.mysql.com/doc/refman/5.7/en/execute.html
+// See https://dev.mysql.com/doc/refman/5.7/en/execute.html
 type ExecuteStmt struct {
 	stmtNode
 
@@ -163,7 +163,7 @@ func (n *ExecuteStmt) Accept(v Visitor) (Node, bool) {
 }
 
 // BeginStmt is a statement to start a new transaction.
-// See: https://dev.mysql.com/doc/refman/5.7/en/commit.html
+// See https://dev.mysql.com/doc/refman/5.7/en/commit.html
 type BeginStmt struct {
 	stmtNode
 }
@@ -179,7 +179,7 @@ func (n *BeginStmt) Accept(v Visitor) (Node, bool) {
 }
 
 // CommitStmt is a statement to commit the current transaction.
-// See: https://dev.mysql.com/doc/refman/5.7/en/commit.html
+// See https://dev.mysql.com/doc/refman/5.7/en/commit.html
 type CommitStmt struct {
 	stmtNode
 }
@@ -195,7 +195,7 @@ func (n *CommitStmt) Accept(v Visitor) (Node, bool) {
 }
 
 // RollbackStmt is a statement to roll back the current transaction.
-// See: https://dev.mysql.com/doc/refman/5.7/en/commit.html
+// See https://dev.mysql.com/doc/refman/5.7/en/commit.html
 type RollbackStmt struct {
 	stmtNode
 }
@@ -211,7 +211,7 @@ func (n *RollbackStmt) Accept(v Visitor) (Node, bool) {
 }
 
 // UseStmt is a statement to use the DBName database as the current database.
-// See: https://dev.mysql.com/doc/refman/5.7/en/use.html
+// See https://dev.mysql.com/doc/refman/5.7/en/use.html
 type UseStmt struct {
 	stmtNode
 
@@ -277,7 +277,7 @@ func (n *SetStmt) Accept(v Visitor) (Node, bool) {
 }
 
 // SetCharsetStmt is a statement to assign values to character and collation variables.
-// See: https://dev.mysql.com/doc/refman/5.7/en/set-statement.html
+// See https://dev.mysql.com/doc/refman/5.7/en/set-statement.html
 type SetCharsetStmt struct {
 	stmtNode
 
@@ -296,7 +296,7 @@ func (n *SetCharsetStmt) Accept(v Visitor) (Node, bool) {
 }
 
 // SetPwdStmt is a statement to assign a password to user account.
-// See: https://dev.mysql.com/doc/refman/5.7/en/set-password.html
+// See https://dev.mysql.com/doc/refman/5.7/en/set-password.html
 type SetPwdStmt struct {
 	stmtNode
 
@@ -321,7 +321,7 @@ type UserSpec struct {
 }
 
 // CreateUserStmt creates user account.
-// See: https://dev.mysql.com/doc/refman/5.7/en/create-user.html
+// See https://dev.mysql.com/doc/refman/5.7/en/create-user.html
 type CreateUserStmt struct {
 	stmtNode
 

ddl/ddl.go

@@ -367,7 +367,7 @@ func setColumnFlagWithConstraint(colMap map[string]*table.Column, v *ast.Constra
 				// Only the first column can be set
 				// if unique index has multi columns,
 				// the flag should be MultipleKeyFlag.
-				// See: https://dev.mysql.com/doc/refman/5.7/en/show-columns.html
+				// See https://dev.mysql.com/doc/refman/5.7/en/show-columns.html
 				if len(v.Keys) > 1 {
 					c.Flag |= mysql.MultipleKeyFlag
 				} else {

evaluator/builtin.go

@@ -154,7 +154,7 @@ var Funcs = map[string]Func{
 	ast.RowFunc:    {builtinRow, 2, -1},
 }
 
-// See: http://dev.mysql.com/doc/refman/5.7/en/comparison-operators.html#function_coalesce
+// See http://dev.mysql.com/doc/refman/5.7/en/comparison-operators.html#function_coalesce
 func builtinCoalesce(args []types.Datum, ctx context.Context) (d types.Datum, err error) {
 	for _, d = range args {
 		if !d.IsNull() {
@@ -164,7 +164,7 @@ func builtinCoalesce(args []types.Datum, ctx context.Context) (d types.Datum, er
 	return d, nil
 }
 
-// See: https://dev.mysql.com/doc/refman/5.7/en/comparison-operators.html#function_isnull
+// See https://dev.mysql.com/doc/refman/5.7/en/comparison-operators.html#function_isnull
 func builtinIsNull(args []types.Datum, _ context.Context) (d types.Datum, err error) {
 	if args[0].IsNull() {
 		d.SetInt64(1)

evaluator/builtin_info.go

@@ -26,7 +26,7 @@ import (
 	"github.com/pingcap/tidb/util/types"
 )
 
-// See: https://dev.mysql.com/doc/refman/5.7/en/information-functions.html
+// See https://dev.mysql.com/doc/refman/5.7/en/information-functions.html
 func builtinDatabase(args []types.Datum, ctx context.Context) (d types.Datum, err error) {
 	s := db.GetCurrentSchema(ctx)
 	if s == "" {
@@ -46,7 +46,7 @@ func builtinFoundRows(arg []types.Datum, ctx context.Context) (d types.Datum, er
 	return d, nil
 }
 
-// See: https://dev.mysql.com/doc/refman/5.7/en/information-functions.html#function_current-user
+// See https://dev.mysql.com/doc/refman/5.7/en/information-functions.html#function_current-user
 // TODO: The value of CURRENT_USER() can differ from the value of USER(). We will finish this after we support grant tables.
 func builtinCurrentUser(args []types.Datum, ctx context.Context) (d types.Datum, err error) {
 	data := variable.GetSessionVars(ctx)
@@ -78,7 +78,7 @@ func builtinConnectionID(args []types.Datum, ctx context.Context) (d types.Datum
 	return d, nil
 }
 
-// See: http://dev.mysql.com/doc/refman/5.7/en/information-functions.html#function_last-insert-id
+// See http://dev.mysql.com/doc/refman/5.7/en/information-functions.html#function_last-insert-id
 func builtinLastInsertID(args []types.Datum, ctx context.Context) (d types.Datum, err error) {
 	if len(args) == 1 {
 		id, err := args[0].ToInt64()

evaluator/builtin_math.go

@@ -26,8 +26,7 @@ import (
 	"github.com/pingcap/tidb/util/types"
 )
 
-// see https://dev.mysql.com/doc/refman/5.7/en/mathematical-functions.html
-
+// See https://dev.mysql.com/doc/refman/5.7/en/mathematical-functions.html
 func builtinAbs(args []types.Datum, _ context.Context) (d types.Datum, err error) {
 	d = args[0]
 	switch d.Kind() {
@@ -78,7 +77,7 @@ func builtinPow(args []types.Datum, _ context.Context) (d types.Datum, err error
 	return d, nil
 }
 
-// See: http://dev.mysql.com/doc/refman/5.7/en/mathematical-functions.html#function_round
+// See http://dev.mysql.com/doc/refman/5.7/en/mathematical-functions.html#function_round
 func builtinRound(args []types.Datum, _ context.Context) (d types.Datum, err error) {
 	x, err := args[0].ToFloat64()
 	if err != nil {