branches/zip: When creating a PRIMARY KEY, flag all its columns NOT NULL.

row_merge_create_temporary_table(): Add the parameter index_defs.

DB_PRIMARY_KEY_IS_NULL: New error code, mapped to ER_PRIMARY_CANT_HAVE_NULL.

row_merge_read_clustered_index(): Replace the parameter "table" with the
two parameters "old_table" and "new_table".  Detect NULL values of columns
that are supposed to be NOT NULL.

row_merge_col_prtype(): New auxiliary function, used by
row_merge_create_temporary_table() to flag NOT NULL any columns
contained in an added PRIMARY KEY.

handler/ha_innodb.cc

@@ -670,6 +670,9 @@ convert_error_code_to_mysql(
 	case DB_CANNOT_DROP_FOREIGN_INDEX:
 		return(HA_ERR_DROP_INDEX_FK);
 
+	case DB_PRIMARY_KEY_IS_NULL:
+		return(ER_PRIMARY_CANT_HAVE_NULL);
+
 	case DB_TOO_MANY_CONCURRENT_TRXS:
 		/* Once MySQL add the appropriate code to errmsg.txt then
 		we can get rid of this #ifdef. NOTE: The code checked by
@@ -8363,7 +8366,7 @@ err_exit:
 
 		/* Clone table and write UNDO log record */
 		indexed_table = row_merge_create_temporary_table(
-			new_table_name, innodb_table, trx);
+			new_table_name, index_defs, innodb_table, trx);
 
 		if (!indexed_table) {
 
@@ -8475,6 +8478,7 @@ error_handling:
 	case DB_SUCCESS:
 		ut_ad(!dict_locked);
 		break;
+	case DB_PRIMARY_KEY_IS_NULL:
 	case DB_DUPLICATE_KEY:
 		prebuilt->trx->error_info = NULL;
 		prebuilt->trx->error_key_num = trx->error_key_num;
@@ -8559,6 +8563,12 @@ func_exit:
 	/* There might be work for utility threads.*/
 	srv_active_wake_master_thread();
 
+	switch (error) {
+	case DB_PRIMARY_KEY_IS_NULL:
+		my_error(ER_PRIMARY_CANT_HAVE_NULL, MYF(0));
+		break;
+	}
+
 	DBUG_RETURN(convert_error_code_to_mysql(error, user_thd));
 }
 

include/db0err.h

@@ -69,6 +69,8 @@ Created 5/24/1996 Heikki Tuuri
 #define	DB_CANNOT_DROP_FOREIGN_INDEX 48 /* we cannot drop an index because
 					it is needed on foreign key
 					constraint */
+#define DB_PRIMARY_KEY_IS_NULL	49	/* a column in the PRIMARY KEY
+					was found to be NULL */
 
 /* The following are partial failure codes */
 #define DB_FAIL			1000

include/row0merge.h

@@ -64,16 +64,20 @@ row_merge_drop_indexes(
 	ulint		num_created);	/* in: number of elements in index[] */
 
 /*************************************************************************
-Create a temporary table using a definition of the old table. You must
-lock data dictionary before calling this function. */
+Create a temporary table for creating a primary key, using the definition
+of an existing table. */
 
 dict_table_t*
 row_merge_create_temporary_table(
 /*=============================*/
-					/* out: table, or NULL on error */
+						/* out: table,
+						or NULL on error */
 	const char*		table_name,	/* in: new table name */
-	dict_table_t*	table,		/* in: old table definition */
-	trx_t*		trx);		/* in/out: trx (sets error_state) */
+	const merge_index_def_t*index_def,	/* in: the index definition
+						of the primary key */
+	const dict_table_t*	table,		/* in: old table definition */
+	trx_t*			trx);		/* in/out: transaction
+						(sets error_state) */
 /*************************************************************************
 Rename the indexes in the dictionary. */
 

row/row0merge.c

@@ -810,14 +810,18 @@ row_merge_cmp(
 
 /************************************************************************
 Reads clustered index of the table and create temporary files
-containing index entries for indexes to be built. */
+containing the index entries for the indexes to be built. */
 static
 ulint
 row_merge_read_clustered_index(
 /*===========================*/
 					/* out: DB_SUCCESS or error */
 	trx_t*			trx,	/* in: transaction */
-	dict_table_t*		table,	/* in: table where index is created */
+	dict_table_t*		old_table,/* in: table where rows are
+					read from */
+	dict_table_t*		new_table,/* in: table where indexes are
+					created; identical to old_table
+					unless creating a PRIMARY KEY */
 	dict_index_t**		index,	/* in: indexes to be created */
 	merge_file_t*		files,	/* in: temporary files */
 	ulint			n_index,/* in: number of indexes to create */
@@ -832,11 +836,15 @@ row_merge_read_clustered_index(
 	mtr_t			mtr;		/* Mini transaction */
 	ulint			err = DB_SUCCESS;/* Return code */
 	ulint			i;
+	ulint			n_nonnull = 0;	/* number of columns
+						changed to NOT NULL */
+	ulint*			nonnull = NULL;	/* NOT NULL columns */
 
 	trx->op_info = "reading clustered index";
 
 	ut_ad(trx);
-	ut_ad(table);
+	ut_ad(old_table);
+	ut_ad(new_table);
 	ut_ad(index);
 	ut_ad(files);
 
@@ -853,11 +861,44 @@ row_merge_read_clustered_index(
 	/* Find the clustered index and create a persistent cursor
 	based on that. */
 
-	clust_index = dict_table_get_first_index(table);
+	clust_index = dict_table_get_first_index(old_table);
 
 	btr_pcur_open_at_index_side(
 		TRUE, clust_index, BTR_SEARCH_LEAF, &pcur, TRUE, &mtr);
 
+	if (UNIV_UNLIKELY(old_table != new_table)) {
+		ulint	n_cols = dict_table_get_n_cols(old_table);
+
+		/* A primary key will be created.  Identify the
+		columns that were flagged NOT NULL in the new table,
+		so that we can quickly check that the records in the
+		(old) clustered index do not violate the added NOT
+		NULL constraints. */
+
+		ut_a(n_cols == dict_table_get_n_cols(new_table));
+
+		nonnull = mem_alloc(n_cols * sizeof *nonnull);
+
+		for (i = 0; i < n_cols; i++) {
+			if (dict_table_get_nth_col(old_table, i)->prtype
+			    & DATA_NOT_NULL) {
+
+				continue;
+			}
+
+			if (dict_table_get_nth_col(new_table, i)->prtype
+			    & DATA_NOT_NULL) {
+
+				nonnull[n_nonnull++] = i;
+			}
+		}
+
+		if (!n_nonnull) {
+			mem_free(nonnull);
+			nonnull = NULL;
+		}
+	}
+
 	row_heap = mem_heap_create(UNIV_PAGE_SIZE);
 
 	/* Scan the clustered index. */
@@ -885,21 +926,39 @@ row_merge_read_clustered_index(
 			rec = btr_pcur_get_rec(&pcur);
 
 			/* Skip delete marked records. */
-			if (rec_get_deleted_flag(rec,
-						 dict_table_is_comp(table))) {
+			if (rec_get_deleted_flag(
+				    rec, dict_table_is_comp(old_table))) {
 				continue;
 			}
 
 			srv_n_rows_inserted++;
 
-			/* Build row based on clustered index */
+			/* Build a row based on the clustered index. */
 
 			row = row_build(ROW_COPY_POINTERS, clust_index,
 					rec, NULL, &ext, row_heap);
 
+			if (UNIV_LIKELY_NULL(nonnull)) {
+				for (i = 0; i < n_nonnull; i++) {
+					dfield_t*	field
+						= &row->fields[nonnull[i]];
+
+					ut_a(!(field->type.prtype
+					       & DATA_NOT_NULL));
+
+					if (dfield_is_null(field)) {
+						trx->error_key_num = 0;
+						err = DB_PRIMARY_KEY_IS_NULL;
+						goto func_exit;
+					}
+
+					field->type.prtype |= DATA_NOT_NULL;
+				}
+			}
+		}
+
 		/* Build all entries for all the indexes to be created
 		in a single scan of the clustered index. */
-		}
 
 		for (i = 0; i < n_index; i++) {
 			row_merge_buf_t*	buf	= merge_buf[i];
@@ -918,6 +977,7 @@ row_merge_read_clustered_index(
 			if (buf->n_tuples
 			    && row_merge_buf_sort(buf)
 			    && dict_index_is_unique(buf->index)) {
+				trx->error_key_num = i;
 				err = DB_DUPLICATE_KEY;
 				goto func_exit;
 			}
@@ -946,6 +1006,10 @@ func_exit:
 	mtr_commit(&mtr);
 	mem_heap_free(row_heap);
 
+	if (UNIV_LIKELY_NULL(nonnull)) {
+		mem_free(nonnull);
+	}
+
 	for (i = 0; i < n_index; i++) {
 		row_merge_buf_free(merge_buf[i]);
 	}
@@ -1429,16 +1493,56 @@ row_merge_file_destroy(
 }
 
 /*************************************************************************
-Create a temporary table using a definition of the old table. You must
-lock data dictionary before calling this function. */
+Determine the precise type of a column that is added to a tem
+if a column must be constrained NOT NULL. */
+UNIV_INLINE
+ulint
+row_merge_col_prtype(
+/*=================*/
+						/* out: col->prtype, possibly
+						ORed with DATA_NOT_NULL */
+	const dict_col_t*	col,		/* in: column */
+	const char*		col_name,	/* in: name of the column */
+	const merge_index_def_t*index_def)	/* in: the index definition
+						of the primary key */
+{
+	ulint	prtype = col->prtype;
+	ulint	i;
+
+	ut_ad(index_def->ind_type & DICT_CLUSTERED);
+
+	if (prtype & DATA_NOT_NULL) {
+
+		return(prtype);
+	}
+
+	/* All columns that are included
+	in the PRIMARY KEY must be NOT NULL. */
+
+	for (i = 0; i < index_def->n_fields; i++) {
+		if (!strcmp(col_name, index_def->fields[i].field_name)) {
+			return(prtype | DATA_NOT_NULL);
+		}
+	}
+
+	return(prtype);
+}
+
+/*************************************************************************
+Create a temporary table for creating a primary key, using the definition
+of an existing table. */
 
 dict_table_t*
 row_merge_create_temporary_table(
 /*=============================*/
-					/* out: table, or NULL on error */
+						/* out: table,
+						or NULL on error */
 	const char*		table_name,	/* in: new table name */
-	dict_table_t*	table,		/* in: old table definition */
-	trx_t*		trx)		/* in/out: trx (sets error_state) */
+	const merge_index_def_t*index_def,	/* in: the index definition
+						of the primary key */
+	const dict_table_t*	table,		/* in: old table definition */
+	trx_t*			trx)		/* in/out: transaction
+						(sets error_state) */
 {
 	ulint		i;
 	dict_table_t*	new_table = NULL;
@@ -1446,6 +1550,7 @@ row_merge_create_temporary_table(
 	ulint		error;
 
 	ut_ad(table_name);
+	ut_ad(index_def);
 	ut_ad(table);
 	ut_ad(mutex_own(&dict_sys->mutex));
 
@@ -1461,13 +1566,15 @@ row_merge_create_temporary_table(
 
 		for (i = 0; i < n_cols; i++) {
 			const dict_col_t*	col;
+			const char*		col_name;
 
 			col = dict_table_get_nth_col(table, i);
+			col_name = dict_table_get_col_name(table, i);
 
 			dict_mem_table_add_col(
-				new_table, heap,
-				dict_table_get_col_name(table, i),
-				col->mtype, col->prtype, col->len);
+				new_table, heap, col_name, col->mtype,
+				row_merge_col_prtype(col, col_name, index_def),
+				col->len);
 		}
 
 		error = row_create_table_for_mysql(new_table, trx);
@@ -1737,7 +1844,8 @@ row_merge_build_indexes(
 	secondary index entries for merge sort */
 
 	error = row_merge_read_clustered_index(
-		trx, old_table, indexes, merge_files, n_indexes, block);
+		trx, old_table, new_table, indexes,
+		merge_files, n_indexes, block);
 
 	if (error != DB_SUCCESS) {