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FIXBUG: 【prepare】修复COM_STMT_EXECUTE，new_params_bind_flag为0分支的协议处理bug：没有复用parameter_types #629

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FIXBUG: 【prepare】修复COM_STMT_EXECUTE，new_params_bind_flag为0分支的协议处理bug：没有复用parameter_types #629

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6aa67d8
修复COM_STMT_EXECUTE，new_params_bind_flag为0分支的协议处理bug：没有复用parameter_types
carsonfeng Dec 4, 2023
c23e474
修复COM_STMT_EXECUTE，new_params_bind_flag为0分支的协议处理bug：没有复用parameter_types
carsonfeng Dec 4, 2023
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14 changes: 12 additions & 2 deletions proxy/server/conn_stmt.go
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Original file line number Diff line number Diff line change
Expand Up @@ -44,7 +44,8 @@ type Stmt struct {
params int
columns int

args []interface{}
paramTypes []byte
args []interface{}

s sqlparser.Statement

Expand Down Expand Up @@ -218,6 +219,7 @@ func (c *ClientConn) handleStmtExecute(data []byte) error {
pos += nullBitmapLen

//new param bound flag
// https://dev.mysql.com/doc/dev/mysql-server/latest/page_protocol_com_stmt_execute.html
if data[pos] == 1 {
pos++
if len(data) < (pos + (paramNum << 1)) {
Expand All @@ -227,8 +229,12 @@ func (c *ClientConn) handleStmtExecute(data []byte) error {
paramTypes = data[pos : pos+(paramNum<<1)]
pos += (paramNum << 1)

paramValues = data[pos:]
//paramValues = data[pos:]
} else {
// new_params_bind_flag 为 false，客户端在发送 COM_STMT_EXECUTE 命令时不需要再次发送 parameter_types
pos++
}
paramValues = data[pos:]

if err := c.bindStmtArgs(s, nullBitmaps, paramTypes, paramValues); err != nil {
return err
Expand Down Expand Up @@ -332,6 +338,10 @@ func (c *ClientConn) handlePrepareExec(stmt sqlparser.Statement, sql string, arg
}

func (c *ClientConn) bindStmtArgs(s *Stmt, nullBitmap, paramTypes, paramValues []byte) error {
if len(paramTypes) > 0 {
// 缓存paramTypes，供后续使用
s.paramTypes = paramTypes
}
args := s.args

pos := 0
Expand Down