mirror of
https://github.com/sqlalchemy/sqlalchemy.git
synced 2026-06-02 13:59:02 -04:00
Mike Bayer
414af7b612
"auto increment" column has been changed, such that autoincrement is no longer implicitly enabled for a :class:`.Table` that has a composite primary key. In order to accommodate being able to enable autoincrement for a composite PK member column while at the same time maintaining SQLAlchemy's long standing behavior of enabling implicit autoincrement for a single integer primary key, a third state has been added to the :paramref:`.Column.autoincrement` parameter ``"auto"``, which is now the default. fixes #3216 - The MySQL dialect no longer generates an extra "KEY" directive when generating CREATE TABLE DDL for a table using InnoDB with a composite primary key with AUTO_INCREMENT on a column that isn't the first column; to overcome InnoDB's limitation here, the PRIMARY KEY constraint is now generated with the AUTO_INCREMENT column placed first in the list of columns.
573 lines
21 KiB
Python
573 lines
21 KiB
Python
# coding: utf-8
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from sqlalchemy.testing import eq_, assert_raises_message, expect_warnings
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from sqlalchemy import sql, exc, schema, types as sqltypes
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from sqlalchemy import Table, MetaData, Column, select, String, \
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Index, Integer, ForeignKey, PrimaryKeyConstraint, extract, \
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VARCHAR, NVARCHAR, Unicode, UnicodeText, \
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NUMERIC, DECIMAL, Numeric, Float, FLOAT, TIMESTAMP, DATE, \
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DATETIME, TIME, \
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DateTime, Time, Date, Interval, NCHAR, CHAR, CLOB, TEXT, Boolean, \
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BOOLEAN, LargeBinary, BLOB, SmallInteger, INT, func, cast
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from sqlalchemy.dialects.mysql import base as mysql
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from sqlalchemy.testing import fixtures, AssertsCompiledSQL
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from sqlalchemy.sql import table, column
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import re
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class CompileTest(fixtures.TestBase, AssertsCompiledSQL):
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__dialect__ = mysql.dialect()
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def test_reserved_words(self):
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table = Table("mysql_table", MetaData(),
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Column("col1", Integer),
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Column("master_ssl_verify_server_cert", Integer))
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x = select([table.c.col1, table.c.master_ssl_verify_server_cert])
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self.assert_compile(
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x,
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"SELECT mysql_table.col1, "
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"mysql_table.`master_ssl_verify_server_cert` FROM mysql_table")
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def test_create_index_simple(self):
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m = MetaData()
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tbl = Table('testtbl', m, Column('data', String(255)))
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idx = Index('test_idx1', tbl.c.data)
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self.assert_compile(schema.CreateIndex(idx),
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'CREATE INDEX test_idx1 ON testtbl (data)')
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def test_create_index_with_length(self):
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m = MetaData()
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tbl = Table('testtbl', m, Column('data', String(255)))
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idx1 = Index('test_idx1', tbl.c.data, mysql_length=10)
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idx2 = Index('test_idx2', tbl.c.data, mysql_length=5)
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self.assert_compile(schema.CreateIndex(idx1),
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'CREATE INDEX test_idx1 ON testtbl (data(10))')
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self.assert_compile(schema.CreateIndex(idx2),
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'CREATE INDEX test_idx2 ON testtbl (data(5))')
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def test_create_index_with_length_quoted(self):
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m = MetaData()
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tbl = Table('testtbl', m, Column('some quoted data',
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String(255), key='s'))
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idx1 = Index('test_idx1', tbl.c.s, mysql_length=10)
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self.assert_compile(
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schema.CreateIndex(idx1),
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'CREATE INDEX test_idx1 ON testtbl (`some quoted data`(10))')
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def test_create_composite_index_with_length_quoted(self):
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m = MetaData()
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tbl = Table('testtbl', m,
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Column('some Quoted a', String(255), key='a'),
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Column('some Quoted b', String(255), key='b'))
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idx1 = Index('test_idx1', tbl.c.a, tbl.c.b,
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mysql_length={'some Quoted a': 10, 'some Quoted b': 20})
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self.assert_compile(schema.CreateIndex(idx1),
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'CREATE INDEX test_idx1 ON testtbl '
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'(`some Quoted a`(10), `some Quoted b`(20))')
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def test_create_composite_index_with_length_quoted_3085_workaround(self):
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m = MetaData()
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tbl = Table('testtbl', m,
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Column('some quoted a', String(255), key='a'),
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Column('some quoted b', String(255), key='b'))
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idx1 = Index(
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'test_idx1', tbl.c.a, tbl.c.b,
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mysql_length={'`some quoted a`': 10, '`some quoted b`': 20}
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)
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self.assert_compile(schema.CreateIndex(idx1),
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'CREATE INDEX test_idx1 ON testtbl '
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'(`some quoted a`(10), `some quoted b`(20))')
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def test_create_composite_index_with_length(self):
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m = MetaData()
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tbl = Table('testtbl', m,
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Column('a', String(255)),
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Column('b', String(255)))
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idx1 = Index('test_idx1', tbl.c.a, tbl.c.b,
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mysql_length={'a': 10, 'b': 20})
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idx2 = Index('test_idx2', tbl.c.a, tbl.c.b,
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mysql_length={'a': 15})
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idx3 = Index('test_idx3', tbl.c.a, tbl.c.b,
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mysql_length=30)
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self.assert_compile(
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schema.CreateIndex(idx1),
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'CREATE INDEX test_idx1 ON testtbl (a(10), b(20))'
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)
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self.assert_compile(
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schema.CreateIndex(idx2),
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'CREATE INDEX test_idx2 ON testtbl (a(15), b)'
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)
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self.assert_compile(
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schema.CreateIndex(idx3),
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'CREATE INDEX test_idx3 ON testtbl (a(30), b(30))'
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)
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def test_create_index_with_using(self):
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m = MetaData()
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tbl = Table('testtbl', m, Column('data', String(255)))
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idx1 = Index('test_idx1', tbl.c.data, mysql_using='btree')
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idx2 = Index('test_idx2', tbl.c.data, mysql_using='hash')
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self.assert_compile(
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schema.CreateIndex(idx1),
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'CREATE INDEX test_idx1 ON testtbl (data) USING btree')
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self.assert_compile(
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schema.CreateIndex(idx2),
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'CREATE INDEX test_idx2 ON testtbl (data) USING hash')
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def test_create_pk_plain(self):
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m = MetaData()
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tbl = Table('testtbl', m, Column('data', String(255)),
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PrimaryKeyConstraint('data'))
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self.assert_compile(
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schema.CreateTable(tbl),
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"CREATE TABLE testtbl (data VARCHAR(255) NOT NULL, "
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"PRIMARY KEY (data))")
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def test_create_pk_with_using(self):
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m = MetaData()
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tbl = Table('testtbl', m, Column('data', String(255)),
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PrimaryKeyConstraint('data', mysql_using='btree'))
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self.assert_compile(
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schema.CreateTable(tbl),
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"CREATE TABLE testtbl (data VARCHAR(255) NOT NULL, "
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"PRIMARY KEY (data) USING btree)")
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def test_create_index_expr(self):
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m = MetaData()
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t1 = Table('foo', m,
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Column('x', Integer)
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)
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self.assert_compile(
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schema.CreateIndex(Index("bar", t1.c.x > 5)),
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"CREATE INDEX bar ON foo (x > 5)"
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)
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def test_deferrable_initially_kw_not_ignored(self):
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m = MetaData()
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Table('t1', m, Column('id', Integer, primary_key=True))
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t2 = Table(
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't2', m, Column(
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'id', Integer,
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ForeignKey('t1.id', deferrable=True, initially="XYZ"),
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primary_key=True))
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self.assert_compile(
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schema.CreateTable(t2),
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"CREATE TABLE t2 (id INTEGER NOT NULL, "
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"PRIMARY KEY (id), FOREIGN KEY(id) REFERENCES t1 (id) "
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"DEFERRABLE INITIALLY XYZ)"
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)
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def test_match_kw_raises(self):
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m = MetaData()
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Table('t1', m, Column('id', Integer, primary_key=True))
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t2 = Table('t2', m, Column('id', Integer,
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ForeignKey('t1.id', match="XYZ"),
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primary_key=True))
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assert_raises_message(
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exc.CompileError,
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"MySQL ignores the 'MATCH' keyword while at the same time causes "
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"ON UPDATE/ON DELETE clauses to be ignored.",
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schema.CreateTable(t2).compile, dialect=mysql.dialect()
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)
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def test_for_update(self):
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table1 = table('mytable',
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column('myid'), column('name'), column('description'))
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self.assert_compile(
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table1.select(table1.c.myid == 7).with_for_update(),
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"SELECT mytable.myid, mytable.name, mytable.description "
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"FROM mytable WHERE mytable.myid = %s FOR UPDATE")
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self.assert_compile(
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table1.select(table1.c.myid == 7).with_for_update(read=True),
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"SELECT mytable.myid, mytable.name, mytable.description "
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"FROM mytable WHERE mytable.myid = %s LOCK IN SHARE MODE")
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class SQLTest(fixtures.TestBase, AssertsCompiledSQL):
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"""Tests MySQL-dialect specific compilation."""
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__dialect__ = mysql.dialect()
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def test_precolumns(self):
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dialect = self.__dialect__
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def gen(distinct=None, prefixes=None):
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kw = {}
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if distinct is not None:
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kw['distinct'] = distinct
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if prefixes is not None:
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kw['prefixes'] = prefixes
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return str(select([column('q')], **kw).compile(dialect=dialect))
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eq_(gen(None), 'SELECT q')
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eq_(gen(True), 'SELECT DISTINCT q')
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eq_(gen(prefixes=['ALL']), 'SELECT ALL q')
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eq_(gen(prefixes=['DISTINCTROW']),
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'SELECT DISTINCTROW q')
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# Interaction with MySQL prefix extensions
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eq_(
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gen(None, ['straight_join']),
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'SELECT straight_join q')
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eq_(
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gen(False, ['HIGH_PRIORITY', 'SQL_SMALL_RESULT', 'ALL']),
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'SELECT HIGH_PRIORITY SQL_SMALL_RESULT ALL q')
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eq_(
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gen(True, ['high_priority', sql.text('sql_cache')]),
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'SELECT high_priority sql_cache DISTINCT q')
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def test_backslash_escaping(self):
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self.assert_compile(
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sql.column('foo').like('bar', escape='\\'),
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"foo LIKE %s ESCAPE '\\\\'"
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)
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dialect = mysql.dialect()
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dialect._backslash_escapes = False
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self.assert_compile(
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sql.column('foo').like('bar', escape='\\'),
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"foo LIKE %s ESCAPE '\\'",
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dialect=dialect
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)
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def test_limit(self):
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t = sql.table('t', sql.column('col1'), sql.column('col2'))
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self.assert_compile(
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select([t]).limit(10).offset(20),
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"SELECT t.col1, t.col2 FROM t LIMIT %s, %s",
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{'param_1': 20, 'param_2': 10}
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)
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self.assert_compile(
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select([t]).limit(10),
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"SELECT t.col1, t.col2 FROM t LIMIT %s",
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{'param_1': 10})
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self.assert_compile(
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select([t]).offset(10),
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"SELECT t.col1, t.col2 FROM t LIMIT %s, 18446744073709551615",
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{'param_1': 10}
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)
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def test_varchar_raise(self):
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for type_ in (
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String,
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VARCHAR,
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String(),
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VARCHAR(),
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NVARCHAR(),
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Unicode,
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Unicode(),
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):
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type_ = sqltypes.to_instance(type_)
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assert_raises_message(
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exc.CompileError,
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"VARCHAR requires a length on dialect mysql",
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type_.compile,
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dialect=mysql.dialect()
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)
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t1 = Table('sometable', MetaData(),
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Column('somecolumn', type_)
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)
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assert_raises_message(
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exc.CompileError,
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r"\(in table 'sometable', column 'somecolumn'\)\: "
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r"(?:N)?VARCHAR requires a length on dialect mysql",
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schema.CreateTable(t1).compile,
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dialect=mysql.dialect()
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)
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def test_update_limit(self):
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t = sql.table('t', sql.column('col1'), sql.column('col2'))
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self.assert_compile(
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t.update(values={'col1': 123}),
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"UPDATE t SET col1=%s"
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)
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self.assert_compile(
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t.update(values={'col1': 123}, mysql_limit=5),
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"UPDATE t SET col1=%s LIMIT 5"
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)
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self.assert_compile(
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t.update(values={'col1': 123}, mysql_limit=None),
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"UPDATE t SET col1=%s"
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)
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self.assert_compile(
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t.update(t.c.col2 == 456, values={'col1': 123}, mysql_limit=1),
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"UPDATE t SET col1=%s WHERE t.col2 = %s LIMIT 1"
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)
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def test_utc_timestamp(self):
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self.assert_compile(func.utc_timestamp(), "UTC_TIMESTAMP")
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def test_sysdate(self):
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self.assert_compile(func.sysdate(), "SYSDATE()")
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def test_cast(self):
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t = sql.table('t', sql.column('col'))
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m = mysql
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specs = [
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(Integer, "CAST(t.col AS SIGNED INTEGER)"),
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(INT, "CAST(t.col AS SIGNED INTEGER)"),
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(m.MSInteger, "CAST(t.col AS SIGNED INTEGER)"),
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(m.MSInteger(unsigned=True), "CAST(t.col AS UNSIGNED INTEGER)"),
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(SmallInteger, "CAST(t.col AS SIGNED INTEGER)"),
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(m.MSSmallInteger, "CAST(t.col AS SIGNED INTEGER)"),
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(m.MSTinyInteger, "CAST(t.col AS SIGNED INTEGER)"),
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# 'SIGNED INTEGER' is a bigint, so this is ok.
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(m.MSBigInteger, "CAST(t.col AS SIGNED INTEGER)"),
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(m.MSBigInteger(unsigned=False), "CAST(t.col AS SIGNED INTEGER)"),
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(m.MSBigInteger(unsigned=True),
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"CAST(t.col AS UNSIGNED INTEGER)"),
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# this is kind of sucky. thank you default arguments!
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(NUMERIC, "CAST(t.col AS DECIMAL)"),
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(DECIMAL, "CAST(t.col AS DECIMAL)"),
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(Numeric, "CAST(t.col AS DECIMAL)"),
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(m.MSNumeric, "CAST(t.col AS DECIMAL)"),
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(m.MSDecimal, "CAST(t.col AS DECIMAL)"),
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(TIMESTAMP, "CAST(t.col AS DATETIME)"),
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(DATETIME, "CAST(t.col AS DATETIME)"),
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(DATE, "CAST(t.col AS DATE)"),
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(TIME, "CAST(t.col AS TIME)"),
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(DateTime, "CAST(t.col AS DATETIME)"),
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(Date, "CAST(t.col AS DATE)"),
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(Time, "CAST(t.col AS TIME)"),
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(DateTime, "CAST(t.col AS DATETIME)"),
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(Date, "CAST(t.col AS DATE)"),
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(m.MSTime, "CAST(t.col AS TIME)"),
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(m.MSTimeStamp, "CAST(t.col AS DATETIME)"),
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(String, "CAST(t.col AS CHAR)"),
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(Unicode, "CAST(t.col AS CHAR)"),
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(UnicodeText, "CAST(t.col AS CHAR)"),
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(VARCHAR, "CAST(t.col AS CHAR)"),
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(NCHAR, "CAST(t.col AS CHAR)"),
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(CHAR, "CAST(t.col AS CHAR)"),
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(m.CHAR(charset='utf8'), "CAST(t.col AS CHAR CHARACTER SET utf8)"),
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(CLOB, "CAST(t.col AS CHAR)"),
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(TEXT, "CAST(t.col AS CHAR)"),
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(m.TEXT(charset='utf8'), "CAST(t.col AS CHAR CHARACTER SET utf8)"),
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(String(32), "CAST(t.col AS CHAR(32))"),
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(Unicode(32), "CAST(t.col AS CHAR(32))"),
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(CHAR(32), "CAST(t.col AS CHAR(32))"),
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(m.MSString, "CAST(t.col AS CHAR)"),
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(m.MSText, "CAST(t.col AS CHAR)"),
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(m.MSTinyText, "CAST(t.col AS CHAR)"),
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(m.MSMediumText, "CAST(t.col AS CHAR)"),
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(m.MSLongText, "CAST(t.col AS CHAR)"),
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(m.MSNChar, "CAST(t.col AS CHAR)"),
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(m.MSNVarChar, "CAST(t.col AS CHAR)"),
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(LargeBinary, "CAST(t.col AS BINARY)"),
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(BLOB, "CAST(t.col AS BINARY)"),
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(m.MSBlob, "CAST(t.col AS BINARY)"),
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(m.MSBlob(32), "CAST(t.col AS BINARY)"),
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(m.MSTinyBlob, "CAST(t.col AS BINARY)"),
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(m.MSMediumBlob, "CAST(t.col AS BINARY)"),
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(m.MSLongBlob, "CAST(t.col AS BINARY)"),
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(m.MSBinary, "CAST(t.col AS BINARY)"),
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(m.MSBinary(32), "CAST(t.col AS BINARY)"),
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(m.MSVarBinary, "CAST(t.col AS BINARY)"),
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(m.MSVarBinary(32), "CAST(t.col AS BINARY)"),
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(Interval, "CAST(t.col AS DATETIME)"),
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]
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for type_, expected in specs:
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self.assert_compile(cast(t.c.col, type_), expected)
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def test_cast_type_decorator(self):
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class MyInteger(sqltypes.TypeDecorator):
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impl = Integer
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type_ = MyInteger()
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t = sql.table('t', sql.column('col'))
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self.assert_compile(
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cast(t.c.col, type_), "CAST(t.col AS SIGNED INTEGER)")
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def test_unsupported_casts(self):
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t = sql.table('t', sql.column('col'))
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m = mysql
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specs = [
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(m.MSBit, "t.col"),
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(FLOAT, "t.col"),
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(Float, "t.col"),
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(m.MSFloat, "t.col"),
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(m.MSDouble, "t.col"),
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(m.MSReal, "t.col"),
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(m.MSYear, "t.col"),
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(m.MSYear(2), "t.col"),
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(Boolean, "t.col"),
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(BOOLEAN, "t.col"),
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(m.MSEnum, "t.col"),
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(m.MSEnum("1", "2"), "t.col"),
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(m.MSSet, "t.col"),
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(m.MSSet("1", "2"), "t.col"),
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]
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for type_, expected in specs:
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with expect_warnings(
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"Datatype .* does not support CAST on MySQL;"
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):
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self.assert_compile(cast(t.c.col, type_), expected)
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def test_no_cast_pre_4(self):
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self.assert_compile(
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cast(Column('foo', Integer), String),
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"CAST(foo AS CHAR)",
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)
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dialect = mysql.dialect()
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dialect.server_version_info = (3, 2, 3)
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with expect_warnings("Current MySQL version does not support CAST;"):
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self.assert_compile(
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cast(Column('foo', Integer), String),
|
|
"foo",
|
|
dialect=dialect
|
|
)
|
|
|
|
def test_cast_grouped_expression_non_castable(self):
|
|
with expect_warnings("Datatype FLOAT does not support CAST on MySQL;"):
|
|
self.assert_compile(
|
|
cast(sql.column('x') + sql.column('y'), Float),
|
|
"(x + y)"
|
|
)
|
|
|
|
def test_cast_grouped_expression_pre_4(self):
|
|
dialect = mysql.dialect()
|
|
dialect.server_version_info = (3, 2, 3)
|
|
with expect_warnings("Current MySQL version does not support CAST;"):
|
|
self.assert_compile(
|
|
cast(sql.column('x') + sql.column('y'), Integer),
|
|
"(x + y)",
|
|
dialect=dialect
|
|
)
|
|
|
|
def test_extract(self):
|
|
t = sql.table('t', sql.column('col1'))
|
|
|
|
for field in 'year', 'month', 'day':
|
|
self.assert_compile(
|
|
select([extract(field, t.c.col1)]),
|
|
"SELECT EXTRACT(%s FROM t.col1) AS anon_1 FROM t" % field)
|
|
|
|
# millsecondS to millisecond
|
|
self.assert_compile(
|
|
select([extract('milliseconds', t.c.col1)]),
|
|
"SELECT EXTRACT(millisecond FROM t.col1) AS anon_1 FROM t")
|
|
|
|
def test_too_long_index(self):
|
|
exp = 'ix_zyrenian_zyme_zyzzogeton_zyzzogeton_zyrenian_zyme_zyz_5cd2'
|
|
tname = 'zyrenian_zyme_zyzzogeton_zyzzogeton'
|
|
cname = 'zyrenian_zyme_zyzzogeton_zo'
|
|
|
|
t1 = Table(tname, MetaData(),
|
|
Column(cname, Integer, index=True),
|
|
)
|
|
ix1 = list(t1.indexes)[0]
|
|
|
|
self.assert_compile(
|
|
schema.CreateIndex(ix1),
|
|
"CREATE INDEX %s "
|
|
"ON %s (%s)" % (exp, tname, cname)
|
|
)
|
|
|
|
def test_innodb_autoincrement(self):
|
|
t1 = Table(
|
|
'sometable', MetaData(),
|
|
Column(
|
|
'assigned_id', Integer(), primary_key=True,
|
|
autoincrement=False),
|
|
Column('id', Integer(), primary_key=True, autoincrement=True),
|
|
mysql_engine='InnoDB')
|
|
self.assert_compile(schema.CreateTable(t1),
|
|
'CREATE TABLE sometable (assigned_id '
|
|
'INTEGER NOT NULL, id INTEGER NOT NULL '
|
|
'AUTO_INCREMENT, PRIMARY KEY (id, assigned_id)'
|
|
')ENGINE=InnoDB')
|
|
|
|
t1 = Table('sometable', MetaData(),
|
|
Column('assigned_id', Integer(), primary_key=True,
|
|
autoincrement=True),
|
|
Column('id', Integer(), primary_key=True,
|
|
autoincrement=False), mysql_engine='InnoDB')
|
|
self.assert_compile(schema.CreateTable(t1),
|
|
'CREATE TABLE sometable (assigned_id '
|
|
'INTEGER NOT NULL AUTO_INCREMENT, id '
|
|
'INTEGER NOT NULL, PRIMARY KEY '
|
|
'(assigned_id, id))ENGINE=InnoDB')
|
|
|
|
def test_innodb_autoincrement_reserved_word_column_name(self):
|
|
t1 = Table(
|
|
'sometable', MetaData(),
|
|
Column('id', Integer(), primary_key=True, autoincrement=False),
|
|
Column('order', Integer(), primary_key=True, autoincrement=True),
|
|
mysql_engine='InnoDB')
|
|
self.assert_compile(
|
|
schema.CreateTable(t1),
|
|
'CREATE TABLE sometable ('
|
|
'id INTEGER NOT NULL, '
|
|
'`order` INTEGER NOT NULL AUTO_INCREMENT, '
|
|
'PRIMARY KEY (`order`, id)'
|
|
')ENGINE=InnoDB')
|
|
|
|
def test_create_table_with_partition(self):
|
|
t1 = Table(
|
|
'testtable', MetaData(),
|
|
Column('id', Integer(), primary_key=True, autoincrement=True),
|
|
Column('other_id', Integer(), primary_key=True,
|
|
autoincrement=False),
|
|
mysql_partitions='2', mysql_partition_by='KEY(other_id)')
|
|
self.assert_compile(
|
|
schema.CreateTable(t1),
|
|
'CREATE TABLE testtable ('
|
|
'id INTEGER NOT NULL AUTO_INCREMENT, '
|
|
'other_id INTEGER NOT NULL, '
|
|
'PRIMARY KEY (id, other_id)'
|
|
')PARTITION BY KEY(other_id) PARTITIONS 2'
|
|
)
|
|
|
|
def test_create_table_with_partition_hash(self):
|
|
t1 = Table(
|
|
'testtable', MetaData(),
|
|
Column('id', Integer(), primary_key=True, autoincrement=True),
|
|
Column('other_id', Integer(), primary_key=True,
|
|
autoincrement=False),
|
|
mysql_partitions='2', mysql_partition_by='HASH(other_id)')
|
|
self.assert_compile(
|
|
schema.CreateTable(t1),
|
|
'CREATE TABLE testtable ('
|
|
'id INTEGER NOT NULL AUTO_INCREMENT, '
|
|
'other_id INTEGER NOT NULL, '
|
|
'PRIMARY KEY (id, other_id)'
|
|
')PARTITION BY HASH(other_id) PARTITIONS 2'
|
|
)
|