*** a/src/backend/tcop/postgres.c
--- b/src/backend/tcop/postgres.c
***************
*** 2025,2033 **** check_log_statement(List *stmt_list)
  	foreach(stmt_item, stmt_list)
  	{
  		Node	   *stmt = (Node *) lfirst(stmt_item);
! 
! 		if (GetCommandLogLevel(stmt) <= log_statement)
! 			return true;
  	}
  
  	return false;
--- 2025,2042 ----
  	foreach(stmt_item, stmt_list)
  	{
  		Node	   *stmt = (Node *) lfirst(stmt_item);
! 		
! 		if (log_statement == LOGSTMT_MOD)
! 		{
! 			if (GetCommandLogLevel(stmt) <= log_statement)
! 				return true;
! 		}
! 		else
! 		{
! 			/* DDL or DML */
! 			if (GetCommandLogLevel(stmt) == log_statement)
! 				return true;
! 		}
  	}
  
  	return false;
*** a/src/backend/tcop/utility.c
--- b/src/backend/tcop/utility.c
***************
*** 2482,2488 **** GetCommandLogLevel(Node *parsetree)
  		case T_InsertStmt:
  		case T_DeleteStmt:
  		case T_UpdateStmt:
! 			lev = LOGSTMT_MOD;
  			break;
  
  		case T_SelectStmt:
--- 2482,2488 ----
  		case T_InsertStmt:
  		case T_DeleteStmt:
  		case T_UpdateStmt:
! 			lev = LOGSTMT_DML;
  			break;
  
  		case T_SelectStmt:
***************
*** 2549,2555 **** GetCommandLogLevel(Node *parsetree)
  			break;
  
  		case T_TruncateStmt:
! 			lev = LOGSTMT_MOD;
  			break;
  
  		case T_CommentStmt:
--- 2549,2555 ----
  			break;
  
  		case T_TruncateStmt:
! 			lev = LOGSTMT_DML;
  			break;
  
  		case T_CommentStmt:
***************
*** 2867,2873 **** GetCommandLogLevel(Node *parsetree)
  					case CMD_UPDATE:
  					case CMD_INSERT:
  					case CMD_DELETE:
! 						lev = LOGSTMT_MOD;
  						break;
  
  					default:
--- 2867,2873 ----
  					case CMD_UPDATE:
  					case CMD_INSERT:
  					case CMD_DELETE:
! 						lev = LOGSTMT_DML;
  						break;
  
  					default:
***************
*** 2893,2899 **** GetCommandLogLevel(Node *parsetree)
  					case CMD_UPDATE:
  					case CMD_INSERT:
  					case CMD_DELETE:
! 						lev = LOGSTMT_MOD;
  						break;
  
  					case CMD_UTILITY:
--- 2893,2899 ----
  					case CMD_UPDATE:
  					case CMD_INSERT:
  					case CMD_DELETE:
! 						lev = LOGSTMT_DML;
  						break;
  
  					case CMD_UTILITY:
*** a/src/backend/utils/misc/guc.c
--- b/src/backend/utils/misc/guc.c
***************
*** 282,287 **** static const struct config_enum_entry log_error_verbosity_options[] = {
--- 282,288 ----
  static const struct config_enum_entry log_statement_options[] = {
  	{"none", LOGSTMT_NONE, false},
  	{"ddl", LOGSTMT_DDL, false},
+ 	{"dml", LOGSTMT_DML, false},
  	{"mod", LOGSTMT_MOD, false},
  	{"all", LOGSTMT_ALL, false},
  	{NULL, 0, false}
*** a/src/include/tcop/tcopprot.h
--- b/src/include/tcop/tcopprot.h
***************
*** 40,45 **** typedef enum
--- 40,46 ----
  {
  	LOGSTMT_NONE,				/* log no statements */
  	LOGSTMT_DDL,				/* log data definition statements */
+ 	LOGSTMT_DML,				/* log data modification statements */
  	LOGSTMT_MOD,				/* log modification statements, plus DDL */
  	LOGSTMT_ALL					/* log all statements */
  } LogStmtLevel;