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Diffstat (limited to 'mysql-test/main/signal_demo1.result')
| -rw-r--r-- | mysql-test/main/signal_demo1.result | 277 |
1 files changed, 277 insertions, 0 deletions
diff --git a/mysql-test/main/signal_demo1.result b/mysql-test/main/signal_demo1.result new file mode 100644 index 00000000..d919f484 --- /dev/null +++ b/mysql-test/main/signal_demo1.result @@ -0,0 +1,277 @@ +drop database if exists demo; +create database demo; +use demo; +create table ab_physical_person ( +person_id integer, +first_name VARCHAR(50), +middle_initial CHAR, +last_name VARCHAR(50), +primary key (person_id)); +create table ab_moral_person ( +company_id integer, +name VARCHAR(100), +primary key (company_id)); +create table in_inventory ( +item_id integer, +descr VARCHAR(50), +stock integer, +primary key (item_id)); +create table po_order ( +po_id integer auto_increment, +cust_type char, /* arc relationship, see cust_id */ +cust_id integer, /* FK to ab_physical_person *OR* ab_moral_person */ +primary key (po_id)); +create table po_order_line ( +po_id integer, /* FK to po_order.po_id */ +line_no integer, +item_id integer, /* FK to in_inventory.item_id */ +qty integer); +# +# Schema integrity enforcement +# +create procedure check_pk_person(in person_type char, in id integer) +begin +declare x integer; +declare msg varchar(128); +/* +Test integrity constraints for an 'arc' relationship. +Based on 'person_type', 'id' points to either a +physical person, or a moral person. +*/ +case person_type +when 'P' then +begin +select count(person_id) from ab_physical_person +where ab_physical_person.person_id = id +into x; +if (x != 1) +then +set msg= concat('No such physical person, PK:', id); +SIGNAL SQLSTATE '45000' SET +MESSAGE_TEXT = msg, +MYSQL_ERRNO = 10000; +end if; +end; +when 'M' then +begin +select count(company_id) from ab_moral_person +where ab_moral_person.company_id = id +into x; +if (x != 1) +then +set msg= concat('No such moral person, PK:', id); +SIGNAL SQLSTATE '45000' SET +MESSAGE_TEXT = msg, +MYSQL_ERRNO = 10000; +end if; +end; +else +begin +set msg= concat('No such person type:', person_type); +SIGNAL SQLSTATE '45000' SET +MESSAGE_TEXT = msg, +MYSQL_ERRNO = 20000; +end; +end case; +end +$$ +Warnings: +Warning 1287 '<select expression> INTO <destination>;' is deprecated and will be removed in a future release. Please use 'SELECT <select list> INTO <destination> FROM...' instead +Warning 1287 '<select expression> INTO <destination>;' is deprecated and will be removed in a future release. Please use 'SELECT <select list> INTO <destination> FROM...' instead +create procedure check_pk_inventory(in id integer) +begin +declare x integer; +declare msg varchar(128); +select count(item_id) from in_inventory +where in_inventory.item_id = id +into x; +if (x != 1) +then +set msg= concat('Failed integrity constraint, table in_inventory, PK:', +id); +SIGNAL SQLSTATE '45000' SET +MESSAGE_TEXT = msg, +MYSQL_ERRNO = 10000; +end if; +end +$$ +Warnings: +Warning 1287 '<select expression> INTO <destination>;' is deprecated and will be removed in a future release. Please use 'SELECT <select list> INTO <destination> FROM...' instead +create procedure check_pk_order(in id integer) +begin +declare x integer; +declare msg varchar(128); +select count(po_id) from po_order +where po_order.po_id = id +into x; +if (x != 1) +then +set msg= concat('Failed integrity constraint, table po_order, PK:', id); +SIGNAL SQLSTATE '45000' SET +MESSAGE_TEXT = msg, +MYSQL_ERRNO = 10000; +end if; +end +$$ +Warnings: +Warning 1287 '<select expression> INTO <destination>;' is deprecated and will be removed in a future release. Please use 'SELECT <select list> INTO <destination> FROM...' instead +create trigger po_order_bi before insert on po_order +for each row +begin +call check_pk_person(NEW.cust_type, NEW.cust_id); +end +$$ +create trigger po_order_bu before update on po_order +for each row +begin +call check_pk_person(NEW.cust_type, NEW.cust_id); +end +$$ +create trigger po_order_line_bi before insert on po_order_line +for each row +begin +call check_pk_order(NEW.po_id); +call check_pk_inventory(NEW.item_id); +end +$$ +create trigger po_order_line_bu before update on po_order_line +for each row +begin +call check_pk_order(NEW.po_id); +call check_pk_inventory(NEW.item_id); +end +$$ +# +# Application helpers +# +create procedure po_create_order( +in p_cust_type char, +in p_cust_id integer, +out id integer) +begin +insert into po_order set cust_type = p_cust_type, cust_id = p_cust_id; +set id = last_insert_id(); +end +$$ +create procedure po_add_order_line( +in po integer, +in line integer, +in item integer, +in q integer) +begin +insert into po_order_line set +po_id = po, line_no = line, item_id = item, qty = q; +end +$$ +# +# Create sample data +# +insert into ab_physical_person values +( 1, "John", "A", "Doe"), +( 2, "Marry", "B", "Smith") +; +insert into ab_moral_person values +( 3, "ACME real estate, INC"), +( 4, "Local school") +; +insert into in_inventory values +( 100, "Table, dinner", 5), +( 101, "Chair", 20), +( 200, "Table, coffee", 3), +( 300, "School table", 25), +( 301, "School chairs", 50) +; +select * from ab_physical_person order by person_id; +person_id first_name middle_initial last_name +1 John A Doe +2 Marry B Smith +select * from ab_moral_person order by company_id; +company_id name +3 ACME real estate, INC +4 Local school +select * from in_inventory order by item_id; +item_id descr stock +100 Table, dinner 5 +101 Chair 20 +200 Table, coffee 3 +300 School table 25 +301 School chairs 50 +# +# Entering an order +# +set @my_po = 0; +/* John Doe wants 1 table and 4 chairs */ +call po_create_order("P", 1, @my_po); +call po_add_order_line (@my_po, 1, 100, 1); +call po_add_order_line (@my_po, 2, 101, 4); +/* Marry Smith wants a coffee table */ +call po_create_order("P", 2, @my_po); +call po_add_order_line (@my_po, 1, 200, 1); +# +# Entering bad data in an order +# +call po_add_order_line (@my_po, 1, 999, 1); +ERROR 45000: Failed integrity constraint, table in_inventory, PK:999 +# +# Entering bad data in an unknown order +# +call po_add_order_line (99, 1, 100, 1); +ERROR 45000: Failed integrity constraint, table po_order, PK:99 +# +# Entering an order for an unknown company +# +call po_create_order("M", 7, @my_po); +ERROR 45000: No such moral person, PK:7 +# +# Entering an order for an unknown person type +# +call po_create_order("X", 1, @my_po); +ERROR 45000: No such person type:X +/* The local school wants 10 class tables and 20 chairs */ +call po_create_order("M", 4, @my_po); +call po_add_order_line (@my_po, 1, 300, 10); +call po_add_order_line (@my_po, 2, 301, 20); +select * from po_order; +po_id cust_type cust_id +1 P 1 +2 P 2 +3 M 4 +select * from po_order_line; +po_id line_no item_id qty +1 1 100 1 +1 2 101 4 +2 1 200 1 +3 1 300 10 +3 2 301 20 +select po_id as "PO#", +( case cust_type +when "P" then concat (pp.first_name, +" ", +pp.middle_initial, +" ", +pp.last_name) +when "M" then mp.name +end ) as "Sold to" + from po_order po +left join ab_physical_person pp on po.cust_id = pp.person_id +left join ab_moral_person mp on po.cust_id = company_id +; +PO# Sold to +1 John A Doe +2 Marry B Smith +3 Local school +select po_id as "PO#", +ol.line_no as "Line", +ol.item_id as "Item", +inv.descr as "Description", +ol.qty as "Quantity" + from po_order_line ol, in_inventory inv +where inv.item_id = ol.item_id +order by ol.item_id, ol.line_no; +PO# Line Item Description Quantity +1 1 100 Table, dinner 1 +1 2 101 Chair 4 +2 1 200 Table, coffee 1 +3 1 300 School table 10 +3 2 301 School chairs 20 +drop database demo; |