Merging the changes from 5.1 branch to release branch.

Includes bug fixes for:
Bug #16722314 FOREIGN KEY ID MODIFIED DURING EXPORT
Bug #16754901 PARS_INFO_FREE NOT CALLED IN DICT_CREATE_ADD_FOREIGN_TO_DICTIONARY

storage/innobase/dict/dict0crea.c

@@ -27,6 +27,21 @@ Created 1/8/1996 Heikki Tuuri
 #include "ut0vec.h"
 #include "ha_prototypes.h"
 
+/*************************************************************************
+Checks if a table name contains the string TEMP_TABLE_PATH_PREFIX which
+denotes temporary tables in MySQL. */
+static
+ibool
+row_is_mysql_tmp_table_name(
+/*========================*/
+				/* out: TRUE if temporary table */
+	const char*     name)   /* in: table name in the form
+				'database/tablename' */
+{
+	return(strstr(name, TEMP_TABLE_PATH_PREFIX) != NULL);
+}
+
+
 /*********************************************************************
 Based on a table object, this function builds the entry to be inserted
 in the SYS_TABLES system table. */
@@ -1347,25 +1362,46 @@ dict_create_add_foreign_to_dictionary(
 {
 	ulint		error;
 	ulint		i;
-
-	pars_info_t*	info = pars_info_create();
+	pars_info_t*	info;
 
 	if (foreign->id == NULL) {
-		char*	stripped_name;
 		/* Generate a new constraint id */
 		ulint	namelen	= strlen(table->name);
 		char*	id	= mem_heap_alloc(foreign->heap, namelen + 20);
 		/* no overflow if number < 1e13 */
-		sprintf(id, "%s_ibfk_%lu", table->name, (ulong) (*id_nr)++);
-		foreign->id = id;
 
-		stripped_name = strchr(foreign->id, '/') + 1;
-		if (innobase_check_identifier_length(stripped_name)) {
-			fprintf(stderr, "InnoDB: Generated foreign key "
-				"name (%s) is too long\n", foreign->id);
+		if (row_is_mysql_tmp_table_name(table->name)) {
+			sprintf(id, "%s_ibfk_%lu", table->name,
+				(ulong) (*id_nr)++);
+		} else {
+			char table_name[MAX_TABLE_NAME_LEN + 20] = "";
+			uint errors = 0;
+
+			strncpy(table_name, table->name,
+				MAX_TABLE_NAME_LEN + 20);
+
+			innobase_convert_to_system_charset(
+				strchr(table_name, '/') + 1,
+				strchr(table->name, '/') + 1,
+				MAX_TABLE_NAME_LEN, &errors);
+
+			if (errors) {
+				strncpy(table_name, table->name,
+					MAX_TABLE_NAME_LEN + 20);
+			}
+
+			sprintf(id, "%s_ibfk_%lu", table_name,
+				(ulong) (*id_nr)++);
+
+			if (innobase_check_identifier_length(
+				strchr(id,'/') + 1)) {
 				return(DB_IDENTIFIER_TOO_LONG);
 			}
 		}
+		foreign->id = id;
+	}
+
+	info = pars_info_create();
 
 	pars_info_add_str_literal(info, "id", foreign->id);
 

storage/innobase/dict/dict0dict.c

@@ -1052,6 +1052,7 @@ dict_table_rename_in_cache(
 	foreign = UT_LIST_GET_FIRST(table->foreign_list);
 
 	while (foreign != NULL) {
+
 		if (ut_strlen(foreign->foreign_table_name)
 		    < ut_strlen(table->name)) {
 			/* Allocate a longer name buffer;
@@ -1065,34 +1066,115 @@ dict_table_rename_in_cache(
 		strcpy(foreign->foreign_table_name, table->name);
 
 		if (strchr(foreign->id, '/')) {
+			/* This is a >= 4.0.18 format id */
+
 			ulint	db_len;
 			char*	old_id;
+			char	old_name_cs_filename[MAX_TABLE_NAME_LEN+20];
+			uint	errors = 0;
+
+			/* All table names are internally stored in charset
+			my_charset_filename (except the temp tables and the
+			partition identifier suffix in partition tables). The
+			foreign key constraint names are internally stored
+			in UTF-8 charset.  The variable fkid here is used
+			to store foreign key constraint name in charset
+			my_charset_filename for comparison further below. */
+			char	fkid[MAX_TABLE_NAME_LEN+20];
+			ibool	on_tmp = FALSE;
+
+			/* The old table name in my_charset_filename is stored
+			in old_name_cs_filename */
+
+			strncpy(old_name_cs_filename, old_name,
+				MAX_TABLE_NAME_LEN);
+			if (strstr(old_name, TEMP_TABLE_PATH_PREFIX) == NULL) {
+
+				innobase_convert_to_system_charset(
+					strchr(old_name_cs_filename, '/') + 1,
+					strchr(old_name, '/') + 1,
+					MAX_TABLE_NAME_LEN, &errors);
+
+				if (errors) {
+					/* There has been an error to convert
+					old table into UTF-8.  This probably
+					means that the old table name is
+					actually in UTF-8. */
+					innobase_convert_to_filename_charset(
+						strchr(old_name_cs_filename,
+						       '/') + 1,
+						strchr(old_name, '/') + 1,
+						MAX_TABLE_NAME_LEN);
+				} else {
+					/* Old name already in
+					my_charset_filename */
+					strncpy(old_name_cs_filename, old_name,
+						MAX_TABLE_NAME_LEN);
+				}
+			}
 
-			/* This is a >= 4.0.18 format id */
+			strncpy(fkid, foreign->id, MAX_TABLE_NAME_LEN);
+
+			if (strstr(fkid, TEMP_TABLE_PATH_PREFIX) == NULL) {
+				innobase_convert_to_filename_charset(
+					strchr(fkid, '/') + 1,
+					strchr(foreign->id, '/') + 1,
+					MAX_TABLE_NAME_LEN+20);
+			} else {
+				on_tmp = TRUE;
+			}
 
 			old_id = mem_strdup(foreign->id);
 
-			if (ut_strlen(foreign->id) > ut_strlen(old_name)
+			if (ut_strlen(fkid) > ut_strlen(old_name_cs_filename)
 			    + ((sizeof dict_ibfk) - 1)
-			    && !memcmp(foreign->id, old_name,
-				       ut_strlen(old_name))
-			    && !memcmp(foreign->id + ut_strlen(old_name),
+			    && !memcmp(fkid, old_name_cs_filename,
+				       ut_strlen(old_name_cs_filename))
+			    && !memcmp(fkid + ut_strlen(old_name_cs_filename),
 				       dict_ibfk, (sizeof dict_ibfk) - 1)) {
 
+				char	table_name[MAX_TABLE_NAME_LEN] = "";
+				uint	errors = 0;
+
 				/* This is a generated >= 4.0.18 format id */
 
 				if (strlen(table->name) > strlen(old_name)) {
-					foreign->id = mem_heap_alloc(
+					foreign->id = mem_heap_zalloc(
 						foreign->heap,
 						strlen(table->name)
 						+ strlen(old_id) + 1);
 				}
 
+				/* Convert the table name to UTF-8 */
+				strncpy(table_name, table->name,
+					MAX_TABLE_NAME_LEN);
+				innobase_convert_to_system_charset(
+					strchr(table_name, '/') + 1,
+					strchr(table->name, '/') + 1,
+					MAX_TABLE_NAME_LEN, &errors);
+
+				if (errors) {
+					/* Table name could not be converted
+					from charset my_charset_filename to
+					UTF-8. This means that the table name
+					is already in UTF-8 (#mysql#50). */
+					strncpy(table_name, table->name,
+						MAX_TABLE_NAME_LEN);
+				}
+
 				/* Replace the prefix 'databasename/tablename'
 				with the new names */
-				strcpy(foreign->id, table->name);
+				strcpy(foreign->id, table_name);
+				if (on_tmp) {
 					strcat(foreign->id,
 					       old_id + ut_strlen(old_name));
+				} else {
+					sprintf(strchr(foreign->id, '/') + 1,
+						"%s%s",
+						strchr(table_name, '/') +1,
+						strstr(old_id, "_ibfk_") );
+				}
+
 			} else {
 				/* This is a >= 4.0.18 format id where the user
 				gave the id name */
@@ -4108,7 +4190,6 @@ dict_print_info_on_foreign_key_in_create_format(
 	dict_foreign_t*	foreign,	/* in: foreign key constraint */
 	ibool		add_newline)	/* in: whether to add a newline */
 {
-	char		constraint_name[MAX_TABLE_NAME_LEN];
 	const char*	stripped_id;
 	ulint	i;
 
@@ -4130,9 +4211,7 @@ dict_print_info_on_foreign_key_in_create_format(
 	}
 
 	fputs(" CONSTRAINT ", file);
-	innobase_convert_to_system_charset(constraint_name, stripped_id,
-					   MAX_TABLE_NAME_LEN);
-	ut_print_name(file, trx, FALSE, constraint_name);
+	ut_print_name(file, trx, FALSE, stripped_id);
 	fputs(" FOREIGN KEY (", file);
 
 	for (i = 0;;) {

storage/innobase/handler/ha_innodb.cc

@@ -901,33 +901,27 @@ innobase_convert_from_table_id(
 
 /**********************************************************************
 Check if the length of the identifier exceeds the maximum allowed.
-The input to this function is an identifier in charset my_charset_filename.
 return true when length of identifier is too long. */
 extern "C"
 my_bool
 innobase_check_identifier_length(
 /*=============================*/
-	const char*	id)	/* in: identifier to check.  it must belong
-				to charset my_charset_filename */
+	const char*	id)	/* in: FK identifier to check excluding the
+				database portion. */
 {
-	char		tmp[MAX_TABLE_NAME_LEN + 10];
-	uint		errors;
-	uint		len;
 	int		well_formed_error = 0;
-	CHARSET_INFO	*cs1 = &my_charset_filename;
-	CHARSET_INFO	*cs2 = thd_charset(current_thd);
+	CHARSET_INFO	*cs = system_charset_info;
+	DBUG_ENTER("innobase_check_identifier_length");
 
-	len = strconvert(cs1, id, cs2, tmp, MAX_TABLE_NAME_LEN + 10, &errors);
-
-	uint res = cs2->cset->well_formed_len(cs2, tmp, tmp + len,
+	uint res = cs->cset->well_formed_len(cs, id, id + strlen(id),
 					     NAME_CHAR_LEN,
 					     &well_formed_error);
 
-	if (well_formed_error || res != len) {
-		my_error(ER_TOO_LONG_IDENT, MYF(0), tmp);
-		return(true);
+	if (well_formed_error || res == NAME_CHAR_LEN) {
+		my_error(ER_TOO_LONG_IDENT, MYF(0), id);
+		DBUG_RETURN(true);
 	}
-	return(false);
+	DBUG_RETURN(false);
 }
 
 /**********************************************************************
@@ -957,17 +951,17 @@ innobase_convert_to_system_charset(
 /*===============================*/
 	char*		to,	/* out: converted identifier */
 	const char*	from,	/* in: identifier to convert */
-	ulint		len)	/* in: length of 'to', in bytes */
+	ulint		len,	/* in: length of 'to', in bytes */
+	uint*		errors)	/* out: error return */
 {
-	uint		errors;
 	uint		rlen;
 	CHARSET_INFO*	cs1 = &my_charset_filename;
 	CHARSET_INFO*	cs2 = system_charset_info;
 
-	rlen = strconvert(cs1, from, cs2, to, len, &errors);
+	rlen = strconvert(cs1, from, cs2, to, len, errors);
 
-	if (errors) {
-		fprintf(stderr, "  InnoDB: There was a problem in converting"
+	if (*errors) {
+		fprintf(stderr, "InnoDB: There was a problem in converting"
 			"'%s' in charset %s to charset %s", from, cs1->name,
 			cs2->name);
 	}
@@ -975,6 +969,32 @@ innobase_convert_to_system_charset(
 	return(rlen);
 }
 
+/**********************************************************************
+Converts an identifier from my_charset_filename to UTF-8 charset. */
+extern "C"
+uint
+innobase_convert_to_filename_charset(
+/*=================================*/
+	char*		to,	/* out: converted identifier */
+	const char*	from,	/* in: identifier to convert */
+	ulint		len)	/* in: length of 'to', in bytes */
+{
+	uint		errors;
+	uint		rlen;
+	CHARSET_INFO*	cs_to = &my_charset_filename;
+	CHARSET_INFO*	cs_from = system_charset_info;
+
+	rlen = strconvert(cs_from, from, cs_to, to, len, &errors);
+
+	if (errors) {
+		fprintf(stderr, "InnoDB: There was a problem in converting"
+			"'%s' in charset %s to charset %s", from, cs_from->name,
+			cs_to->name);
+	}
+
+	return(rlen);
+}
+
 
 /**********************************************************************
 Compares NUL-terminated UTF-8 strings case insensitively.

storage/innobase/include/dict0types.h

@@ -19,4 +19,7 @@ typedef struct dict_foreign_struct	dict_foreign_t;
 typedef struct ind_node_struct		ind_node_t;
 typedef struct tab_node_struct		tab_node_t;
 
+#define TEMP_TABLE_PREFIX                "#sql"
+#define TEMP_TABLE_PATH_PREFIX           "/" TEMP_TABLE_PREFIX
+
 #endif

storage/innobase/include/ha_prototypes.h

@@ -94,8 +94,17 @@ innobase_convert_to_system_charset(
 /*===============================*/
 	char*		to,		/* out: converted identifier */
 	const char*	from,		/* in: identifier to convert */
-	ulint		len);	/* in: length of 'to', in bytes */
+	ulint		len,		/* in: length of 'to', in bytes */
+        uint*		errors);	/* out: error return */
 
+/**********************************************************************
+Converts an identifier from my_charset_filename to UTF-8 charset. */
+uint
+innobase_convert_to_filename_charset(
+/*=================================*/
+        char*           to,     /* out: converted identifier */
+        const char*     from,   /* in: identifier to convert */
+        ulint           len);   /* in: length of 'to', in bytes */
 
 #endif
 #endif

storage/innobase/row/row0mysql.c

@@ -33,6 +33,7 @@ Created 9/17/2000 Heikki Tuuri
 #include "ibuf0ibuf.h"
 #include "m_string.h"
 #include "my_sys.h"
+#include "ha_prototypes.h"
 
 /* A dummy variable used to fool the compiler */
 ibool	row_mysql_identically_false	= FALSE;
@@ -3657,6 +3658,7 @@ row_rename_table_for_mysql(
 	ibool		old_is_tmp, new_is_tmp;
 	pars_info_t*	info			= NULL;
 	ulint		retry			= 0;
+	DBUG_ENTER("row_rename_table_for_mysql");
 
 	ut_ad(trx->mysql_thread_id == os_thread_get_curr_id());
 	ut_a(old_name != NULL);
@@ -3672,7 +3674,7 @@ row_rename_table_for_mysql(
 		      stderr);
 
 		trx_commit_for_mysql(trx);
-		return(DB_ERROR);
+		DBUG_RETURN(DB_ERROR);
 	}
 
 	if (row_mysql_is_system_table(new_name)) {
@@ -3685,7 +3687,7 @@ row_rename_table_for_mysql(
 			new_name);
 
 		trx_commit_for_mysql(trx);
-		return(DB_ERROR);
+		DBUG_RETURN(DB_ERROR);
 	}
 
 	trx->op_info = "renaming table";
@@ -3799,12 +3801,29 @@ row_rename_table_for_mysql(
 
 	if (!new_is_tmp) {
 		/* Rename all constraints. */
+		char	new_table_name[MAX_TABLE_NAME_LEN] = "";
+		uint	errors = 0;
 
 		info = pars_info_create();
 
 		pars_info_add_str_literal(info, "new_table_name", new_name);
 		pars_info_add_str_literal(info, "old_table_name", old_name);
 
+		strncpy(new_table_name, new_name, MAX_TABLE_NAME_LEN);
+		innobase_convert_to_system_charset(
+			strchr(new_table_name, '/') + 1,
+			strchr(new_name, '/') +1,
+			MAX_TABLE_NAME_LEN, &errors);
+
+		if (errors) {
+			/* Table name could not be converted from charset
+			my_charset_filename to UTF-8. This means that the
+			table name is already in UTF-8 (#mysql#50). */
+			strncpy(new_table_name, new_name, MAX_TABLE_NAME_LEN);
+		}
+
+		pars_info_add_str_literal(info, "new_table_utf8", new_table_name);
+
 		err = que_eval_sql(
 			info,
 			"PROCEDURE RENAME_CONSTRAINT_IDS () IS\n"
@@ -3816,6 +3835,7 @@ row_rename_table_for_mysql(
 			"old_t_name_len INT;\n"
 			"new_db_name_len INT;\n"
 			"id_len INT;\n"
+			"offset INT;\n"
 			"found INT;\n"
 			"BEGIN\n"
 			"found := 1;\n"
@@ -3824,8 +3844,6 @@ row_rename_table_for_mysql(
 			"new_db_name := SUBSTR(:new_table_name, 0,\n"
 			"                      new_db_name_len);\n"
 			"old_t_name_len := LENGTH(:old_table_name);\n"
-			"gen_constr_prefix := CONCAT(:old_table_name,\n"
-			"                            '_ibfk_');\n"
 			"WHILE found = 1 LOOP\n"
 			"       SELECT ID INTO foreign_id\n"
 			"        FROM SYS_FOREIGN\n"
@@ -3842,12 +3860,12 @@ row_rename_table_for_mysql(
 			"        id_len := LENGTH(foreign_id);\n"
 			"        IF (INSTR(foreign_id, '/') > 0) THEN\n"
 			"               IF (INSTR(foreign_id,\n"
-			"                         gen_constr_prefix) > 0)\n"
+			"                         '_ibfk_') > 0)\n"
 			"               THEN\n"
+			"                offset := INSTR(foreign_id, '_ibfk_') - 1;\n"
 			"                new_foreign_id :=\n"
-			"                CONCAT(:new_table_name,\n"
-			"                SUBSTR(foreign_id, old_t_name_len,\n"
-			"                       id_len - old_t_name_len));\n"
+			"                CONCAT(:new_table_utf8,\n"
+			"			SUBSTR(foreign_id, offset, id_len - offset));\n"
 			"               ELSE\n"
 			"                new_foreign_id :=\n"
 			"                CONCAT(new_db_name,\n"
@@ -4005,7 +4023,7 @@ funct_exit:
 
 	trx->op_info = "";
 
-	return((int) err);
+	DBUG_RETURN((int) err);
 }
 
 /*************************************************************************

storage/innodb_plugin/dict/dict0crea.c

@@ -44,6 +44,21 @@ Created 1/8/1996 Heikki Tuuri
 #include "ut0vec.h"
 #include "ha_prototypes.h"
 
+/*************************************************************************
+Checks if a table name contains the string TEMP_TABLE_PATH_PREFIX which
+denotes temporary tables in MySQL. */
+static
+ibool
+row_is_mysql_tmp_table_name(
+/*========================*/
+				/* out: TRUE if temporary table */
+	const char*     name)   /* in: table name in the form
+				'database/tablename' */
+{
+	return(strstr(name, TEMP_TABLE_PATH_PREFIX) != NULL);
+}
+
+
 /*****************************************************************//**
 Based on a table object, this function builds the entry to be inserted
 in the SYS_TABLES system table.
@@ -1426,25 +1441,46 @@ dict_create_add_foreign_to_dictionary(
 {
 	ulint		error;
 	ulint		i;
-
-	pars_info_t*	info = pars_info_create();
+	pars_info_t*	info;
 
 	if (foreign->id == NULL) {
-		char*	stripped_name;
 		/* Generate a new constraint id */
 		ulint	namelen	= strlen(table->name);
 		char*	id	= mem_heap_alloc(foreign->heap, namelen + 20);
-		/* no overflow if number < 1e13 */
-		sprintf(id, "%s_ibfk_%lu", table->name, (ulong) (*id_nr)++);
-		foreign->id = id;
 
-		stripped_name = strchr(foreign->id, '/') + 1;
-		if (innobase_check_identifier_length(stripped_name)) {
-			fprintf(stderr, "InnoDB: Generated foreign key "
-				"name (%s) is too long\n", foreign->id);
+		if (row_is_mysql_tmp_table_name(table->name)) {
+			sprintf(id, "%s_ibfk_%lu", table->name,
+				(ulong) (*id_nr)++);
+		} else {
+			char	table_name[MAX_TABLE_NAME_LEN + 20] = "";
+			uint	errors = 0;
+
+			strncpy(table_name, table->name,
+				MAX_TABLE_NAME_LEN + 20);
+
+			innobase_convert_to_system_charset(
+				strchr(table_name, '/') + 1,
+				strchr(table->name, '/') + 1,
+				MAX_TABLE_NAME_LEN, &errors);
+
+			if (errors) {
+				strncpy(table_name, table->name,
+					MAX_TABLE_NAME_LEN + 20);
+			}
+
+			sprintf(id, "%s_ibfk_%lu", table_name,
+				(ulong) (*id_nr)++);
+
+			if (innobase_check_identifier_length(
+				strchr(id,'/') + 1)) {
 				return(DB_IDENTIFIER_TOO_LONG);
 			}
 		}
+		foreign->id = id;
+
+	}
+
+	info = pars_info_create();
 
 	pars_info_add_str_literal(info, "id", foreign->id);
 

storage/innodb_plugin/dict/dict0dict.c

@@ -1092,22 +1092,78 @@ dict_table_rename_in_cache(
 		strcpy(foreign->foreign_table_name, table->name);
 
 		if (strchr(foreign->id, '/')) {
+			/* This is a >= 4.0.18 format id */
+
 			ulint	db_len;
 			char*	old_id;
+			char    old_name_cs_filename[MAX_TABLE_NAME_LEN+20];
+			uint    errors = 0;
+
+			/* All table names are internally stored in charset
+			my_charset_filename (except the temp tables and the
+			partition identifier suffix in partition tables). The
+			foreign key constraint names are internally stored
+			in UTF-8 charset.  The variable fkid here is used
+			to store foreign key constraint name in charset
+			my_charset_filename for comparison further below. */
+			char    fkid[MAX_TABLE_NAME_LEN+20];
+			ibool	on_tmp = FALSE;
+
+			/* The old table name in my_charset_filename is stored
+			in old_name_cs_filename */
+
+			strncpy(old_name_cs_filename, old_name,
+				MAX_TABLE_NAME_LEN);
+			if (strstr(old_name, TEMP_TABLE_PATH_PREFIX) == NULL) {
+
+				innobase_convert_to_system_charset(
+					strchr(old_name_cs_filename, '/') + 1,
+					strchr(old_name, '/') + 1,
+					MAX_TABLE_NAME_LEN, &errors);
+
+				if (errors) {
+					/* There has been an error to convert
+					old table into UTF-8.  This probably
+					means that the old table name is
+					actually in UTF-8. */
+					innobase_convert_to_filename_charset(
+						strchr(old_name_cs_filename,
+						       '/') + 1,
+						strchr(old_name, '/') + 1,
+						MAX_TABLE_NAME_LEN);
+				} else {
+					/* Old name already in
+					my_charset_filename */
+					strncpy(old_name_cs_filename, old_name,
+						MAX_TABLE_NAME_LEN);
+				}
+			}
 
-			/* This is a >= 4.0.18 format id */
+			strncpy(fkid, foreign->id, MAX_TABLE_NAME_LEN);
+
+			if (strstr(fkid, TEMP_TABLE_PATH_PREFIX) == NULL) {
+				innobase_convert_to_filename_charset(
+					strchr(fkid, '/') + 1,
+					strchr(foreign->id, '/') + 1,
+					MAX_TABLE_NAME_LEN+20);
+			} else {
+				on_tmp = TRUE;
+			}
 
 			old_id = mem_strdup(foreign->id);
 
-			if (ut_strlen(foreign->id) > ut_strlen(old_name)
+			if (ut_strlen(fkid) > ut_strlen(old_name_cs_filename)
 			    + ((sizeof dict_ibfk) - 1)
-			    && !memcmp(foreign->id, old_name,
-				       ut_strlen(old_name))
-			    && !memcmp(foreign->id + ut_strlen(old_name),
+			    && !memcmp(fkid, old_name_cs_filename,
+				       ut_strlen(old_name_cs_filename))
+			    && !memcmp(fkid + ut_strlen(old_name_cs_filename),
 				       dict_ibfk, (sizeof dict_ibfk) - 1)) {
 
 				/* This is a generated >= 4.0.18 format id */
 
+				char	table_name[MAX_TABLE_NAME_LEN] = "";
+				uint	errors = 0;
+
 				if (strlen(table->name) > strlen(old_name)) {
 					foreign->id = mem_heap_alloc(
 						foreign->heap,
@@ -1115,11 +1171,36 @@ dict_table_rename_in_cache(
 						+ strlen(old_id) + 1);
 				}
 
+				/* Convert the table name to UTF-8 */
+				strncpy(table_name, table->name,
+					MAX_TABLE_NAME_LEN);
+				innobase_convert_to_system_charset(
+					strchr(table_name, '/') + 1,
+					strchr(table->name, '/') + 1,
+					MAX_TABLE_NAME_LEN, &errors);
+
+				if (errors) {
+					/* Table name could not be converted
+					from charset my_charset_filename to
+					UTF-8. This means that the table name
+					is already in UTF-8 (#mysql#50). */
+					strncpy(table_name, table->name,
+						MAX_TABLE_NAME_LEN);
+				}
+
 				/* Replace the prefix 'databasename/tablename'
 				with the new names */
-				strcpy(foreign->id, table->name);
+				strcpy(foreign->id, table_name);
+				if (on_tmp) {
 					strcat(foreign->id,
 					       old_id + ut_strlen(old_name));
+				} else {
+					sprintf(strchr(foreign->id, '/') + 1,
+						"%s%s",
+						strchr(table_name, '/') +1,
+						strstr(old_id, "_ibfk_") );
+				}
+
 			} else {
 				/* This is a >= 4.0.18 format id where the user
 				gave the id name */
@@ -4602,7 +4683,6 @@ dict_print_info_on_foreign_key_in_create_format(
 	dict_foreign_t*	foreign,	/*!< in: foreign key constraint */
 	ibool		add_newline)	/*!< in: whether to add a newline */
 {
-	char		constraint_name[MAX_TABLE_NAME_LEN];
 	const char*	stripped_id;
 	ulint	i;
 
@@ -4624,9 +4704,7 @@ dict_print_info_on_foreign_key_in_create_format(
 	}
 
 	fputs(" CONSTRAINT ", file);
-	innobase_convert_from_id(&my_charset_filename, constraint_name,
-				 stripped_id, MAX_TABLE_NAME_LEN);
-	ut_print_name(file, trx, FALSE, constraint_name);
+	ut_print_name(file, trx, FALSE, stripped_id);
 	fputs(" FOREIGN KEY (", file);
 
 	for (i = 0;;) {

storage/innodb_plugin/handler/ha_innodb.cc

@@ -1013,33 +1013,27 @@ innobase_convert_from_table_id(
 
 /**********************************************************************
 Check if the length of the identifier exceeds the maximum allowed.
-The input to this function is an identifier in charset my_charset_filename.
 return true when length of identifier is too long. */
-extern "C" UNIV_INTERN
+extern "C"
 my_bool
 innobase_check_identifier_length(
 /*=============================*/
-	const char*	id)	/* in: identifier to check.  it must belong
-				to charset my_charset_filename */
+	const char*	id)	/* in: FK identifier to check excluding the
+				database portion. */
 {
-	char		tmp[MAX_TABLE_NAME_LEN + 10];
-	uint		errors;
-	uint		len;
 	int		well_formed_error = 0;
-	CHARSET_INFO*	cs1 = &my_charset_filename;
-	CHARSET_INFO*	cs2 = thd_charset(current_thd);
-
-	len = strconvert(cs1, id, cs2, tmp, MAX_TABLE_NAME_LEN + 10, &errors);
+	CHARSET_INFO	*cs = system_charset_info;
+	DBUG_ENTER("innobase_check_identifier_length");
 
-	uint res = cs2->cset->well_formed_len(cs2, tmp, tmp + len,
+	uint res = cs->cset->well_formed_len(cs, id, id + strlen(id),
 					     NAME_CHAR_LEN,
 					     &well_formed_error);
 
-	if (well_formed_error || res != len) {
-		my_error(ER_TOO_LONG_IDENT, MYF(0), tmp);
-		return(true);
+	if (well_formed_error || res == NAME_CHAR_LEN) {
+		my_error(ER_TOO_LONG_IDENT, MYF(0), id);
+		DBUG_RETURN(true);
 	}
-	return(false);
+	DBUG_RETURN(false);
 }
 
 /******************************************************************//**
@@ -11614,4 +11608,30 @@ test_innobase_convert_name()
 	}
 }
 
+/**********************************************************************
+Converts an identifier from my_charset_filename to UTF-8 charset. */
+extern "C"
+uint
+innobase_convert_to_filename_charset(
+/*=================================*/
+	char*		to,	/* out: converted identifier */
+	const char*	from,	/* in: identifier to convert */
+	ulint		len)	/* in: length of 'to', in bytes */
+{
+	uint		errors;
+	uint		rlen;
+	CHARSET_INFO*	cs_to = &my_charset_filename;
+	CHARSET_INFO*	cs_from = system_charset_info;
+
+	rlen = strconvert(cs_from, from, cs_to, to, len, &errors);
+
+	if (errors) {
+		fprintf(stderr, "InnoDB: There was a problem in converting"
+			"'%s' in charset %s to charset %s", from, cs_from->name,
+			cs_to->name);
+	}
+
+	return(rlen);
+}
+
 #endif /* UNIV_COMPILE_TEST_FUNCS */

storage/innodb_plugin/include/dict0types.h

@@ -40,4 +40,7 @@ typedef struct tab_node_struct		tab_node_t;
 #define	DICT_HDR_SPACE		0	/* the SYSTEM tablespace */
 #define	DICT_HDR_PAGE_NO	FSP_DICT_HDR_PAGE_NO
 
+#define TEMP_TABLE_PREFIX                "#sql"
+#define TEMP_TABLE_PATH_PREFIX           "/" TEMP_TABLE_PREFIX
+
 #endif

storage/innodb_plugin/include/ha_prototypes.h

@@ -279,4 +279,24 @@ innobase_check_identifier_length(
 	const char*	id);	/* in: identifier to check.  it must belong
 				to charset my_charset_filename */
 
+/**********************************************************************
+Converts an identifier from my_charset_filename to UTF-8 charset. */
+uint
+innobase_convert_to_system_charset(
+/*===============================*/
+	char*           to,		/* out: converted identifier */
+	const char*     from,		/* in: identifier to convert */
+	ulint           len,		/* in: length of 'to', in bytes */
+	uint*		errors);	/* out: error return */
+
+/**********************************************************************
+Converts an identifier from my_charset_filename to UTF-8 charset. */
+uint
+innobase_convert_to_filename_charset(
+/*=================================*/
+	char*           to,     /* out: converted identifier */
+	const char*     from,   /* in: identifier to convert */
+	ulint           len);   /* in: length of 'to', in bytes */
+
+
 #endif

storage/innodb_plugin/row/row0mysql.c

@@ -51,6 +51,7 @@ Created 9/17/2000 Heikki Tuuri
 #include "btr0sea.h"
 #include "fil0fil.h"
 #include "ibuf0ibuf.h"
+#include "ha_prototypes.h"
 
 #ifdef __WIN__
 /* error LNK2001: unresolved external symbol _debug_sync_C_callback_ptr */
@@ -3902,12 +3903,29 @@ row_rename_table_for_mysql(
 		goto end;
 	} else if (!new_is_tmp) {
 		/* Rename all constraints. */
+		char	new_table_name[MAX_TABLE_NAME_LEN] = "";
+		uint	errors = 0;
 
 		info = pars_info_create();
 
 		pars_info_add_str_literal(info, "new_table_name", new_name);
 		pars_info_add_str_literal(info, "old_table_name", old_name);
 
+		strncpy(new_table_name, new_name, MAX_TABLE_NAME_LEN);
+		innobase_convert_to_system_charset(
+			strchr(new_table_name, '/') + 1,
+			strchr(new_name, '/') +1,
+			MAX_TABLE_NAME_LEN, &errors);
+
+		if (errors) {
+			/* Table name could not be converted from charset
+			my_charset_filename to UTF-8. This means that the
+			table name is already in UTF-8 (#mysql#50). */
+			strncpy(new_table_name, new_name, MAX_TABLE_NAME_LEN);
+		}
+
+		pars_info_add_str_literal(info, "new_table_utf8", new_table_name);
+
 		err = que_eval_sql(
 			info,
 			"PROCEDURE RENAME_CONSTRAINT_IDS () IS\n"
@@ -3919,6 +3937,7 @@ row_rename_table_for_mysql(
 			"old_t_name_len INT;\n"
 			"new_db_name_len INT;\n"
 			"id_len INT;\n"
+			"offset INT;\n"
 			"found INT;\n"
 			"BEGIN\n"
 			"found := 1;\n"
@@ -3927,8 +3946,6 @@ row_rename_table_for_mysql(
 			"new_db_name := SUBSTR(:new_table_name, 0,\n"
 			"                      new_db_name_len);\n"
 			"old_t_name_len := LENGTH(:old_table_name);\n"
-			"gen_constr_prefix := CONCAT(:old_table_name,\n"
-			"                            '_ibfk_');\n"
 			"WHILE found = 1 LOOP\n"
 			"       SELECT ID INTO foreign_id\n"
 			"        FROM SYS_FOREIGN\n"
@@ -3945,12 +3962,13 @@ row_rename_table_for_mysql(
 			"        id_len := LENGTH(foreign_id);\n"
 			"        IF (INSTR(foreign_id, '/') > 0) THEN\n"
 			"               IF (INSTR(foreign_id,\n"
-			"                         gen_constr_prefix) > 0)\n"
+			"                         '_ibfk_') > 0)\n"
 			"               THEN\n"
+                        "                offset := INSTR(foreign_id, '_ibfk_') - 1;\n"
 			"                new_foreign_id :=\n"
-			"                CONCAT(:new_table_name,\n"
-			"                SUBSTR(foreign_id, old_t_name_len,\n"
-			"                       id_len - old_t_name_len));\n"
+			"                CONCAT(:new_table_utf8,\n"
+			"                SUBSTR(foreign_id, offset,\n"
+			"                       id_len - offset));\n"
 			"               ELSE\n"
 			"                new_foreign_id :=\n"
 			"                CONCAT(new_db_name,\n"