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Merge pull request #1692 from FlipperPA/master

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Create custom SQL for SQL Server. Yes, it had to be that ugly, but it…
This commit is contained in:
Matt Westcott 2015-09-18 11:26:37 +01:00
commit 6ffa06624f
1 changed files with 14 additions and 0 deletions
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14
wagtail/wagtailimages/migrations/0004_make_focal_point_key_not_nullable.py
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@ -11,6 +11,19 @@ def remove_duplicate_renditions(apps, schema_editor):
SELECT CONCAT(image_id, '-', filter_id) FROM (SELECT * FROM `wagtailimages_rendition`) as x WHERE `focal_point_key` IS NULL GROUP BY image_id, filter_id HAVING COUNT(*) > 1
) AND `focal_point_key` IS NULL
""")
elif schema_editor.connection.vendor == 'microsoft':
schema_editor.execute("""
DELETE FROM [wagtailimages_rendition] WHERE CAST(image_id AS VARCHAR(MAX)) + '-' + CAST(filter_id AS VARCHAR(MAX)) IN (
SELECT CAST(image_id AS VARCHAR(MAX)) + '-' + CAST(filter_id AS VARCHAR(MAX)) FROM [wagtailimages_rendition] WHERE focal_point_key IS NULL GROUP BY image_id, filter_id HAVING COUNT(*) > 1
) AND focal_point_key IS NULL
""")
schema_editor.execute("""
DECLARE @constraint_name VARCHAR(MAX)
SELECT @constraint_name = CONSTRAINT_NAME FROM INFORMATION_SCHEMA.TABLE_CONSTRAINTS WHERE TABLE_NAME='wagtailimages_rendition' AND CONSTRAINT_TYPE='UNIQUE'
EXEC('ALTER TABLE [wagtailimages_rendition] DROP CONSTRAINT ' + @constraint_name)
ALTER TABLE [wagtailimages_rendition] ALTER COLUMN [focal_point_key] NVARCHAR(255) NOT NULL
EXEC('ALTER TABLE [wagtailimages_rendition] ADD CONSTRAINT ' + @constraint_name + ' UNIQUE NONCLUSTERED (image_id, filter_id, focal_point_key)')
""")
else:
schema_editor.execute("""
DELETE FROM wagtailimages_rendition WHERE image_id || '-' || filter_id IN (
@ -26,6 +39,7 @@ class Migration(migrations.Migration):
operations = [
migrations.RunPython(remove_duplicate_renditions),
migrations.AlterField(
model_name='rendition',
name='focal_point_key',