---json
{
"description": "This how-to shows you how to generate random data with the column random generator.",
"low_quality_page": "false",
"page_id": "bi8ermzs2ogeyim4vvnxd",
"title": "How to generate random data"
}
---
====== Tabulify - How to generate random data ======
===== About =====
This [[..:howto|how-to]] shows you how to generate ''random'' data with the [[docs:generator:random|column random generator]].
===== Steps =====
==== Creation of the generator file ====
To generate data, you need to create a [[docs:resource:generator|generator file]] that will describe the data to be generated.
The below [[docs:resource:generator|data resource generator]]:
* has the [[docs:resource:name|name]] ''random--datagen.yml''
* has the [[docs:resource:logicalname|logical name]] ''random''
* will generate ''30'' values (''MaxRecordCount'' count)
* has a column named ''id'' that has [[docs:generator:sequence|sequence data generator]] that:
* starts by default at the value ''1''
* increments by default with the value ''1''
* has a column for each data type with a [[docs:generator:random|random generator]] where the range is defined by:
* a ''max''
* and a ''min''
MaxRecordCount: 30
Columns:
- name: id
type: integer
comment: A id column to see easily the number of values generated
DataGenerator:
type: sequence
- name: int
type: integer
comment: A column with a random integer generator
DataGenerator:
type: random
min: 0
max: 5
- name: rand_float
type: float
comment: A column with a random float generator
DataGenerator:
type: random
min: 0.0
max: 8.0
- name: rand_double
type: double
comment: A column with a random double generator
DataGenerator:
type: random
min: 0.0
max: 8.0
- name: numeric
type: numeric
scale: 2
comment: A column with a random numeric generator with a scale of 2
DataGenerator:
type: random
min: 10.40
max: 19.50
- name: rand_date
type: date
comment: A column with a random date generator
DataGenerator:
type: random
min: 2020-10-01
max: 2020-11-01
- name: rand_timestamp
type: timestamp
comment: A column with a random timestamp generator
DataGenerator:
type: random
min: 2020-10-01 01:00:00
max: 2020-10-01 02:00:00
- name: rand_time
type: time
comment: A column with a random time generator
DataGenerator:
type: random
min: 01:00:00
max: 02:00:00
- name: string
type: varchar
comment: A column with a random string
DataGenerator:
type: random
min: a
max: zzzzzzzz
==== Printing the data ====
With the [[docs:tabli:data:print|data print command]], we can print the ''30 values'' generated.
tabli data print random--datagen.yml@howto
[[docs:connection:howto|howto]] is the connection that contains the files used in the [[..:howto|HowTo's]].
id int rand_float rand_double numeric rand_date rand_timestamp rand_time string
-- --- ---------- -------------------- ------- ---------- --------------------- --------- -------
1 2 5.949046 7.334240632976011 13.45 2020-10-16 2020-10-01 01:04:55.0 01:59:23 dtwdqtt
2 0 3.8458169 6.917470410239475 17.37 2020-10-24 2020-10-01 01:41:48.0 01:47:56 cgzfbxu
3 1 0.5151166 5.894278028908796 12.24 2020-10-09 2020-10-01 01:31:37.0 01:47:29 dddulee
4 5 3.6544273 2.066366806912213 17.14 2020-10-19 2020-10-01 01:14:46.0 01:30:43 bykdzlk
5 3 7.9282465 3.0814429269694026 10.58 2020-10-25 2020-10-01 01:55:19.0 01:07:57 dyuwnpc
6 2 5.1251993 7.137018598795309 12.02 2020-10-19 2020-10-01 01:36:52.0 01:37:29 qaamnu
7 3 6.811733 7.075330683806021 19.23 2020-10-22 2020-10-01 01:07:47.0 01:24:05 bsdkorp
8 3 5.513641 3.1506205452746663 18.31 2020-10-30 2020-10-01 01:48:43.0 01:43:08 ehybxhr
9 0 2.4566748 3.7500275924077826 12.35 2020-10-08 2020-10-01 01:30:04.0 01:22:16 cquufuo
10 1 7.897481 3.3493473476849323 16.95 2020-10-30 2020-10-01 01:01:59.0 01:27:40 evqqzko
11 1 2.0761254 0.9849009627000829 18.79 2020-10-08 2020-10-01 01:54:58.0 01:17:14 drivpgo
12 1 6.821446 4.522769574847222 13.68 2020-10-19 2020-10-01 01:03:28.0 01:37:39 eapctsw
13 2 3.8404908 0.006640847321239818 15.76 2020-10-24 2020-10-01 01:40:22.0 01:57:26 exdmzpm
14 5 5.7232847 3.3655195946604524 13.10 2020-10-26 2020-10-01 01:45:08.0 01:23:08 cxvjoh
15 2 3.6941814 1.7625506111621627 11.69 2020-10-24 2020-10-01 01:43:17.0 01:20:47 bjhzeaa
16 3 6.1410446 1.8662069753044594 11.21 2020-10-05 2020-10-01 01:09:54.0 01:19:38 spgmkf
17 2 7.953512 4.325088311622337 13.35 2020-10-05 2020-10-01 01:44:58.0 01:10:29 cniianx
18 3 4.701595 5.727585561426775 11.06 2020-10-23 2020-10-01 01:43:18.0 01:45:23 degzpaf
19 5 7.6858525 3.32765728025669 18.30 2020-10-24 2020-10-01 01:36:43.0 01:01:13 exqsund
20 5 1.8904049 3.8179689470575786 11.40 2020-10-27 2020-10-01 01:01:09.0 01:43:53 bkpvwot
21 4 6.8700266 7.431647395929477 19.09 2020-10-21 2020-10-01 01:36:39.0 01:25:31 dbrggrx
22 4 2.602568 4.653896192996839 18.40 2020-10-29 2020-10-01 01:42:48.0 01:21:37 blnylqi
23 1 4.337965 0.8247261554054965 14.56 2020-10-22 2020-10-01 01:07:16.0 01:30:22 eziyogv
24 4 4.475076 5.914048325115427 12.18 2020-10-27 2020-10-01 01:00:31.0 01:51:03 bopwkug
25 3 5.497604 0.7503798394018828 14.64 2020-10-05 2020-10-01 01:03:56.0 01:34:01 dlvucsv
26 4 2.000347 4.9844142426633775 18.34 2020-10-28 2020-10-01 01:14:36.0 01:48:48 bsnunad
27 4 3.8370354 6.0687039992400695 15.92 2020-10-20 2020-10-01 01:44:08.0 01:13:06 dpnufcq
28 5 2.4209976 6.534706692236394 15.98 2020-10-30 2020-10-01 01:04:20.0 01:19:08 dknrrah
29 3 0.2099089 0.8484447542140581 16.18 2020-10-03 2020-10-01 01:27:40.0 01:29:57 xgywvt
30 2 1.405872 7.126028009377373 14.42 2020-10-08 2020-10-01 01:44:51.0 01:12:35 csnmnga
===== Next =====
Because a [[docs:resource:generator|generator]] is just a [[docs:resource:resource|data resource]], you can use it in every [[docs:op:op|data operation]].
[[generator_data_operation|How to use a generator in a data operation ]]