1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
|
import sys
import random
import string
import re
class Field:
def __init__(self, name, is_nullible):
self.name = name
self.is_nullible = is_nullible
class Field_int(Field):
sizes = [ 1, 2, 3, 4, 8 ]
types = [ "TINYINT", "SMALLINT", "MEDIUMINT", "INT", "BIGINT" ]
uint_ranges = [ (0,(1<<8)-1), (0,(1<<16)-1), (0,(1<<24)-1), (0,(1<<32)-1), (0,(1<<64)-1) ]
int_ranges = [ (-(1<<7), (1<<7)-1), (-(1<<15),(1<<15)-1), (-(1<<23),(1<<23)-1), (-(1<<31),(1<<31)-1), (-(1<<63),(1<<63)-1) ]
def __init__(self, name, size, is_unsigned, is_nullible):
Field.__init__(self, name, is_nullible)
self.idx = Field_int.sizes.index(size)
self.size = size
self.is_unsigned = is_unsigned
def get_type(self):
t = Field_int.types[self.idx]
if self.is_unsigned:
t += " UNSIGNED"
if not self.is_nullible:
t += " NOT NULL"
return t
def get_value(self):
if self.is_unsigned:
r = Field_int.uint_ranges[self.idx]
else:
r = Field_int.int_ranges[self.idx]
return random.randint(r[0],r[1])
def next_field(self):
return Field_int(self.name, Field_int.sizes[random.randint(self.idx,len(Field_int.sizes)-1)], self.is_unsigned, self.is_nullible)
class Field_int_auto_inc(Field_int):
def __init__(self, name, size, is_unsigned, is_nullible):
Field_int.__init__(self, name, size, is_unsigned, is_nullible)
self.next_value = 0
def get_type(self):
return Field_int.get_type(self)
def get_value(self):
v = self.next_value
self.next_value += 1
return v
class Field_char(Field):
types = [ "CHAR", "BINARY" ]
def __init__(self, name, size, is_binary, is_nullible):
Field.__init__(self, name, is_nullible)
assert 0 <= size and size < 256
self.size = size
self.is_binary = is_binary
def get_type(self):
t = "%s(%d)" % (Field_char.types[self.is_binary], self.size)
if not self.is_nullible:
t += " NOT NULL"
return t
def next_size(self):
if self.size < 255:
return self.size + 1
return self.size
def get_value(self):
l = random.randint(1, self.size)
s = ''.join(random.choice(string.ascii_lowercase + string.ascii_uppercase + string.digits) for x in range(l))
return "'%s'" % (s)
def next_field(self):
return Field_char(self.name, self.next_size(), self.is_binary, self.is_nullible)
class Field_varchar(Field):
types = [ "VARCHAR", "VARBINARY" ]
def __init__(self, name, size, is_binary, is_nullible):
Field.__init__(self, name, is_nullible)
assert 0 <= size and size < 64*1024
self.size = size
self.is_binary = is_binary
def get_type(self):
t = "%s(%d)" % (Field_varchar.types[self.is_binary], self.size)
if not self.is_nullible:
t += " NOT NULL"
return t;
def get_value(self):
l = random.randint(1, self.size)
s = ''.join(random.choice(string.ascii_lowercase + string.ascii_uppercase + string.digits) for x in range(l))
return "'%s'" % (s)
def next_size(self):
if self.size < 64*1024:
return self.size + 1
return self.size
def next_field(self):
if self.size < 256:
new_size = 256
else:
new_size = self.size + 1
return Field_varchar(self.name, new_size, self.is_binary, self.is_nullible)
class Field_blob(Field):
types = [ "TINYBLOB", "BLOB", "MEDIUMBLOB", "LONGBLOB" ]
def __init__(self, name, size, is_nullible, idx):
Field.__init__(self, name, is_nullible)
self.size = size
self.idx = idx
def get_type(self):
t = "%s" % (Field_blob.types[self.idx])
if not self.is_nullible:
t += " NOT NULL"
return t
def get_value(self):
l = random.randint(1, self.size)
s = ''.join(random.choice(string.ascii_lowercase + string.ascii_uppercase + string.digits) for x in range(l))
return "'%s'" % (s)
def next_field(self):
self.size += 1
if self.idx < 3:
self.idx += 1
return Field_blob(self.name, self.size, self.is_nullible, self.idx)
def create_fields():
fields = []
fields.append(create_int('a'))
fields.append(create_int('b'))
fields.append(create_char('c'))
fields.append(create_varchar('d'))
fields.append(create_varchar('e'))
fields.append(create_varchar('f'))
fields.append(create_blob('g'))
fields.append(create_blob('h'))
fields.append(Field_int_auto_inc('id', 8, 0, 0))
return fields
def create_int(name):
int_sizes = [ 1, 2, 3, 4, 8]
return Field_int(name, int_sizes[random.randint(0,len(int_sizes)-1)], random.randint(0,1), random.randint(0,1))
def create_char(name):
return Field_char(name, random.randint(1, 100), random.randint(0,1), random.randint(0,1))
def create_varchar(name):
return Field_varchar(name, random.randint(1, 100), random.randint(0,1), random.randint(0,1))
def create_blob(name):
return Field_blob(name, random.randint(1,2), random.randint(0,1), random.randint(0,3))
def create_table(fields, tablename, engine):
if engine == "tokudb":
key_type = "CLUSTERING KEY"
else:
key_type = "KEY"
t = "CREATE TABLE %s (" % (tablename)
for f in fields:
t += "%s %s, " % (f.name, f.get_type())
t += "KEY(b), %s(e), PRIMARY KEY(id)" % (key_type)
t += ") ENGINE=%s;" % (engine)
return t
def insert_row(fields):
t = "INSERT INTO %s VALUES ("
for i in range(len(fields)):
f = fields[i]
t += "%s" % (f.get_value())
if i < len(fields)-1:
t += ","
t += ");"
return t
def header():
print "# generated from change_column_all.py"
print "# test random column change on wide tables"
print "source include/have_tokudb.inc;"
print "--source include/big_test.inc"
print "--disable_warnings"
print "DROP TABLE IF EXISTS t, ti;"
print "--enable_warnings"
print "SET SESSION TOKUDB_DISABLE_SLOW_ALTER=1;"
print "SET SESSION DEFAULT_STORAGE_ENGINE='TokuDB';"
print
def main():
experiments = 1000
nrows = 10
seed = 0
for arg in sys.argv[1:]:
match = re.match("--(.*)=(.*)", arg)
if match:
exec("%s = %s" % (match.group(1),match.group(2)))
random.seed(seed)
header()
for experiment in range(experiments):
# generate a schema
fields = create_fields()
# create a table with the schema
print create_table(fields, "t", "tokudb")
# insert some rows
for r in range(nrows):
print insert_row(fields) % ('t')
print create_table(fields, "ti", "myisam");
print "INSERT INTO ti SELECT * FROM t;"
# transform table schema and contents
for f in [ 0, 2, 3, 5, 6, 7 ]:
fields[f] = fields[f].next_field()
print "ALTER TABLE t CHANGE COLUMN %s %s %s;" % (fields[f].name, fields[f].name, fields[f].get_type())
print "ALTER TABLE ti CHANGE COLUMN %s %s %s;" % (fields[f].name, fields[f].name, fields[f].get_type())
new_row = insert_row(fields)
print new_row % ('t')
print new_row % ('ti')
# compare tables
print "let $diff_tables = test.t, test.ti;"
print "source include/diff_tables.inc;"
# cleanup
print "DROP TABLE t, ti;"
print
return 0
sys.exit(main())
|
