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Implemented sqlite-utils transform command, closes #164

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Simon Willison 2020-09-22 00:46:32 -07:00
commit 752d261229
5 changed files with 309 additions and 39 deletions
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54
tests/test_transform.py
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@ -11,9 +11,9 @@ import pytest
{},
[
"CREATE TABLE [dogs_new_suffix] (\n [id] INTEGER PRIMARY KEY,\n [name] TEXT,\n [age] TEXT\n);",
"INSERT INTO [dogs_new_suffix] ([id], [name], [age]) SELECT [id], [name], [age] FROM [dogs]",
"DROP TABLE [dogs]",
"ALTER TABLE [dogs_new_suffix] RENAME TO [dogs]",
"INSERT INTO [dogs_new_suffix] ([id], [name], [age])\n SELECT [id], [name], [age] FROM [dogs];",
"DROP TABLE [dogs];",
"ALTER TABLE [dogs_new_suffix] RENAME TO [dogs];",
],
),
# Change column type
@ -21,9 +21,9 @@ import pytest
{"types": {"age": int}},
[
"CREATE TABLE [dogs_new_suffix] (\n [id] INTEGER PRIMARY KEY,\n [name] TEXT,\n [age] INTEGER\n);",
"INSERT INTO [dogs_new_suffix] ([id], [name], [age]) SELECT [id], [name], [age] FROM [dogs]",
"DROP TABLE [dogs]",
"ALTER TABLE [dogs_new_suffix] RENAME TO [dogs]",
"INSERT INTO [dogs_new_suffix] ([id], [name], [age])\n SELECT [id], [name], [age] FROM [dogs];",
"DROP TABLE [dogs];",
"ALTER TABLE [dogs_new_suffix] RENAME TO [dogs];",
],
),
# Rename a column
@ -31,9 +31,9 @@ import pytest
{"rename": {"age": "dog_age"}},
[
"CREATE TABLE [dogs_new_suffix] (\n [id] INTEGER PRIMARY KEY,\n [name] TEXT,\n [dog_age] TEXT\n);",
"INSERT INTO [dogs_new_suffix] ([id], [name], [dog_age]) SELECT [id], [name], [age] FROM [dogs]",
"DROP TABLE [dogs]",
"ALTER TABLE [dogs_new_suffix] RENAME TO [dogs]",
"INSERT INTO [dogs_new_suffix] ([id], [name], [dog_age])\n SELECT [id], [name], [age] FROM [dogs];",
"DROP TABLE [dogs];",
"ALTER TABLE [dogs_new_suffix] RENAME TO [dogs];",
],
),
# Drop a column
@ -41,9 +41,9 @@ import pytest
{"drop": ["age"]},
[
"CREATE TABLE [dogs_new_suffix] (\n [id] INTEGER PRIMARY KEY,\n [name] TEXT\n);",
"INSERT INTO [dogs_new_suffix] ([id], [name]) SELECT [id], [name] FROM [dogs]",
"DROP TABLE [dogs]",
"ALTER TABLE [dogs_new_suffix] RENAME TO [dogs]",
"INSERT INTO [dogs_new_suffix] ([id], [name])\n SELECT [id], [name] FROM [dogs];",
"DROP TABLE [dogs];",
"ALTER TABLE [dogs_new_suffix] RENAME TO [dogs];",
],
),
# Convert type AND rename column
@ -51,9 +51,9 @@ import pytest
{"types": {"age": int}, "rename": {"age": "dog_age"}},
[
"CREATE TABLE [dogs_new_suffix] (\n [id] INTEGER PRIMARY KEY,\n [name] TEXT,\n [dog_age] INTEGER\n);",
"INSERT INTO [dogs_new_suffix] ([id], [name], [dog_age]) SELECT [id], [name], [age] FROM [dogs]",
"DROP TABLE [dogs]",
"ALTER TABLE [dogs_new_suffix] RENAME TO [dogs]",
"INSERT INTO [dogs_new_suffix] ([id], [name], [dog_age])\n SELECT [id], [name], [age] FROM [dogs];",
"DROP TABLE [dogs];",
"ALTER TABLE [dogs_new_suffix] RENAME TO [dogs];",
],
),
# Change primary key
@ -61,9 +61,9 @@ import pytest
{"pk": "age"},
[
"CREATE TABLE [dogs_new_suffix] (\n [id] INTEGER,\n [name] TEXT,\n [age] TEXT PRIMARY KEY\n);",
"INSERT INTO [dogs_new_suffix] ([id], [name], [age]) SELECT [id], [name], [age] FROM [dogs]",
"DROP TABLE [dogs]",
"ALTER TABLE [dogs_new_suffix] RENAME TO [dogs]",
"INSERT INTO [dogs_new_suffix] ([id], [name], [age])\n SELECT [id], [name], [age] FROM [dogs];",
"DROP TABLE [dogs];",
"ALTER TABLE [dogs_new_suffix] RENAME TO [dogs];",
],
),
# Change primary key to a compound pk
@ -71,9 +71,9 @@ import pytest
{"pk": ("age", "name")},
[
"CREATE TABLE [dogs_new_suffix] (\n [id] INTEGER,\n [name] TEXT,\n [age] TEXT,\n PRIMARY KEY ([age], [name])\n);",
"INSERT INTO [dogs_new_suffix] ([id], [name], [age]) SELECT [id], [name], [age] FROM [dogs]",
"DROP TABLE [dogs]",
"ALTER TABLE [dogs_new_suffix] RENAME TO [dogs]",
"INSERT INTO [dogs_new_suffix] ([id], [name], [age])\n SELECT [id], [name], [age] FROM [dogs];",
"DROP TABLE [dogs];",
"ALTER TABLE [dogs_new_suffix] RENAME TO [dogs];",
],
),
# Remove primary key, creating a rowid table
@ -81,9 +81,9 @@ import pytest
{"pk": None},
[
"CREATE TABLE [dogs_new_suffix] (\n [id] INTEGER,\n [name] TEXT,\n [age] TEXT\n);",
"INSERT INTO [dogs_new_suffix] ([id], [name], [age]) SELECT [id], [name], [age] FROM [dogs]",
"DROP TABLE [dogs]",
"ALTER TABLE [dogs_new_suffix] RENAME TO [dogs]",
"INSERT INTO [dogs_new_suffix] ([id], [name], [age])\n SELECT [id], [name], [age] FROM [dogs];",
"DROP TABLE [dogs];",
"ALTER TABLE [dogs_new_suffix] RENAME TO [dogs];",
],
),
],
@ -93,9 +93,9 @@ def test_transform_sql(fresh_db, params, expected_sql, use_pragma_foreign_keys):
dogs = fresh_db["dogs"]
if use_pragma_foreign_keys:
fresh_db.conn.execute("PRAGMA foreign_keys=ON")
expected_sql.insert(0, "PRAGMA foreign_keys=OFF")
expected_sql.append("PRAGMA foreign_key_check")
expected_sql.append("PRAGMA foreign_keys=ON")
expected_sql.insert(0, "PRAGMA foreign_keys=OFF;")
expected_sql.append("PRAGMA foreign_key_check;")
expected_sql.append("PRAGMA foreign_keys=ON;")
dogs.insert({"id": 1, "name": "Cleo", "age": "5"}, pk="id")
sql = dogs.transform_sql(**{**params, **{"tmp_suffix": "suffix"}})
assert sql == expected_sql