peewee Documentation Release 3.0.0query = Facility.select() Retrieve specific columns from a table Retrieve names of facilities and cost to members. SELECT name, membercost FROM facilities; query = Facility.select(Facility.name, Facility print(facility.name) Control which rows are retrieved Retrieve list of facilities that have a cost to members. SELECT * FROM facilities WHERE membercost > 0 query = Facility.select().where(Facility part 2 Retrieve list of facilities that have a cost to members, and that fee is less than 1/50th of the monthly maintenance cost. Return id, name, cost and monthly-maintenance. SELECT facid, name, membercost0 码力 | 319 页 | 361.50 KB | 1 年前3
peewee Documentation Release 3.1.0query = Facility.select() Retrieve specific columns from a table Retrieve names of facilities and cost to members. SELECT name, membercost FROM facilities; query = Facility.select(Facility.name, Facility print(facility.name) Control which rows are retrieved Retrieve list of facilities that have a cost to members. SELECT * FROM facilities WHERE membercost > 0 query = Facility.select().where(Facility part 2 Retrieve list of facilities that have a cost to members, and that fee is less than 1/50th of the monthly maintenance cost. Return id, name, cost and monthly-maintenance. SELECT facid, name, membercost0 码力 | 332 页 | 370.77 KB | 1 年前3
peewee Documentation Release 3.6.0Applications that receive lots of traffic may benefit from using a connection pool to mitigate the cost of setting up and tearing down connections on every request. Flask Flask and peewee are a great username == 'Charlie' A function expression, e.g. fn.Lower(fn.Substr(User.username, 1, 1)) == 'a' A comparison of one column to another, e.g. Employee.salary < (Employee.tenure * 1000) + 40000 You can also com/coleifer/peewee/issues/1640 Query operators The following types of comparisons are supported by peewee: Comparison Meaning == x equals y < x is less than y <= x is less than or equal to y > x is greater than0 码力 | 377 页 | 399.12 KB | 1 年前3
peewee Documentation
Release 3.5.0Applications that receive lots of traffic may benefit from using a connection pool to mitigate the cost of setting up and tearing down connections on every request. Flask Flask and peewee are a great username == 'Charlie' A function expression, e.g. fn.Lower(fn.Substr(User.username, 1, 1)) == 'a' A comparison of one column to another, e.g. Employee.salary < (Employee.tenure * 1000) + 40000 You can also insert operations. Query operators The following types of comparisons are supported by peewee: Comparison Meaning == x equals y < x is less than y <= x is less than or equal to y > x is greater than0 码力 | 347 页 | 380.80 KB | 1 年前3
peewee Documentation Release 3.4.0query = Facility.select() Retrieve specific columns from a table Retrieve names of facilities and cost to members. SELECT name, membercost FROM facilities; query = Facility.select(Facility.name, Facility print(facility.name) Control which rows are retrieved Retrieve list of facilities that have a cost to members. SELECT * FROM facilities WHERE membercost > 0 query = Facility.select().where(Facility part 2 Retrieve list of facilities that have a cost to members, and that fee is less than 1/50th of the monthly maintenance cost. Return id, name, cost and monthly-maintenance. SELECT facid, name, membercost0 码力 | 349 页 | 382.34 KB | 1 年前3
peewee Documentation
Release 3.5.0Applications that receive lots of traffic may benefit from using a connection pool to mitigate the cost of setting up and tearing down connections on every request. Flask Flask and peewee are a great == 'Charlie' • A function expression, e.g. fn.Lower(fn.Substr(User.username, 1, 1)) == 'a' • A comparison of one column to another, e.g. Employee.salary < (Employee.tenure * 1000) + 40000 You can also comparisons are supported by peewee: 84 Chapter 1. Contents: peewee Documentation, Release 3.5.0 Comparison Meaning == x equals y < x is less than y <= x is less than or equal to y > x is greater than0 码力 | 282 页 | 1.02 MB | 1 年前3
peewee Documentation
Release 3.3.0query = Facility.select() Retrieve specific columns from a table Retrieve names of facilities and cost to members. SELECT name, membercost FROM facilities; 20 Chapter 1. Contents: peewee Documentation query: print(facility.name) Control which rows are retrieved Retrieve list of facilities that have a cost to members. SELECT * FROM facilities WHERE membercost > 0 query = Facility.select().where(Facility part 2 Retrieve list of facilities that have a cost to members, and that fee is less than 1/50th of the monthly maintenance cost. Return id, name, cost and monthly-maintenance. SELECT facid, name, membercost0 码力 | 280 页 | 1.02 MB | 1 年前3
peewee Documentation
Release 3.4.0query = Facility.select() Retrieve specific columns from a table Retrieve names of facilities and cost to members. SELECT name, membercost FROM facilities; 20 Chapter 1. Contents: peewee Documentation query: print(facility.name) Control which rows are retrieved Retrieve list of facilities that have a cost to members. SELECT * FROM facilities WHERE membercost > 0 query = Facility.select().where(Facility part 2 Retrieve list of facilities that have a cost to members, and that fee is less than 1/50th of the monthly maintenance cost. Return id, name, cost and monthly-maintenance. SELECT facid, name, membercost0 码力 | 284 页 | 1.03 MB | 1 年前3
peewee Documentation
Release 3.6.0Applications that receive lots of traffic may benefit from using a connection pool to mitigate the cost of setting up and tearing down connections on every request. Flask Flask and peewee are a great == 'Charlie' • A function expression, e.g. fn.Lower(fn.Substr(User.username, 1, 1)) == 'a' • A comparison of one column to another, e.g. Employee.salary < (Employee.tenure * 1000) + 40000 You can also issues/1640 1.8 Query operators The following types of comparisons are supported by peewee: Comparison Meaning == x equals y < x is less than y <= x is less than or equal to y > x is greater than0 码力 | 302 页 | 1.02 MB | 1 年前3
peewee Documentation
Release 2.0.2out SQL. It works recursively and knows about a few types of expressions: • the query tree • comparison statements like ‘==’, ‘IN’, ‘LIKE’ which comprise the leaves of the tree • expressions like addition == ’Charlie’ • a function expression, e.g. fn.Lower(fn.Substr(User.username, 1, 1)) == ’a’ • a comparison of one column to another, e.g. Employee.salary < (Employee.tenure * 1000) + 40000 You can also Keys First of all, let me say that I do not think using non-integer primary keys is a good idea. The cost in storage is higher, the index lookups will be slower, and foreign key joins will be more expensive0 码力 | 65 页 | 315.33 KB | 1 年前3
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