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Change blob upload ints into bigints

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This commit is contained in:
Joseph Schorr 2017-02-27 12:58:13 -05:00
parent 3502d9f61c
commit 76de324ca8
2 changed files with 31 additions and 2 deletions
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data/migrations/versions/b8ae68ad3e52_change_blobupload_fields_to_bigintegers_.py Normal file
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"""Change BlobUpload fields to BigIntegers to allow layers > 8GB
Revision ID: b8ae68ad3e52
Revises: e2894a3a3c19
Create Date: 2017-02-27 11:26:49.182349
"""
# revision identifiers, used by Alembic.
revision = 'b8ae68ad3e52'
down_revision = 'e2894a3a3c19'
from alembic import op
import sqlalchemy as sa
from sqlalchemy.dialects import mysql
def upgrade(tables):
# Delete old entries in the blobupload table. This is generally a good idea for cleanup and
# also makes the alter column calls much faster.
conn = op.get_bind()
conn.execute("Delete from blobupload where created <= '2017-02-01'", ())
op.alter_column('blobupload', 'byte_count', existing_type=sa.Integer(), type_=sa.BigInteger())
op.alter_column('blobupload', 'uncompressed_byte_count', existing_type=sa.Integer(), type_=sa.BigInteger())
def downgrade(tables):
op.alter_column('blobupload', 'byte_count', existing_type=sa.BigInteger(), type_=sa.Integer())
op.alter_column('blobupload', 'uncompressed_byte_count', existing_type=sa.BigInteger(), type_=sa.Integer())