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updating migration for specificities around mysql and postgres #2643

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updating migration for specificities around mysql and postgres #2643

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10 changes: 9 additions & 1 deletion MIGRATING.md
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Original file line number Diff line number Diff line change
Expand Up @@ -132,9 +132,17 @@ class ConvertToActiveStorage < ActiveRecord::Migration[5.2]
# sqlite
# get_blob_id = 'LAST_INSERT_ROWID()'

# mysql
# active_storage_blob_statement = ActiveRecord::Base.connection.raw_connection.prepare('active_storage_blob_statement', <<-SQL)
# INSERT INTO active_storage_blobs (
# `key`, filename, content_type, metadata, byte_size, checksum, created_at
# ) VALUES ($1, $2, $3, '{}', $4, $5, $6)
# SQL

# postgres
active_storage_blob_statement = ActiveRecord::Base.connection.raw_connection.prepare('active_storage_blob_statement', <<-SQL)
INSERT INTO active_storage_blobs (
`key`, filename, content_type, metadata, byte_size, checksum, created_at
"key", filename, content_type, metadata, byte_size, checksum, created_at
) VALUES ($1, $2, $3, '{}', $4, $5, $6)
SQL

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