92 lines
3.7 KiB
Transact-SQL
92 lines
3.7 KiB
Transact-SQL
-- Rename article "father" columns to "parent" (SQL Server / MSSQL).
|
|
--
|
|
-- One-off manual migration (no migration code is kept in the repo).
|
|
-- sqlcmd -S <server> -d <db> -E -i scripts/migrate-parent-rename.mssql.sql
|
|
--
|
|
-- Guarded and safe to re-run. Safe to retry after a partial run.
|
|
--
|
|
-- NOTE ON BATCHING: sp_rename is deferred and its effect is not visible to
|
|
-- subsequent statements in the SAME batch. Each rename therefore runs in its
|
|
-- own batch (GO), and constraint/index recreation happens after a GO so the
|
|
-- new column names resolve.
|
|
|
|
SET XACT_ABORT ON;
|
|
GO
|
|
|
|
BEGIN TRANSACTION;
|
|
GO
|
|
|
|
-- Drop the old filtered unique index (references fathersort).
|
|
IF EXISTS (SELECT 1 FROM sys.indexes WHERE name = 'UQ_article_fatherarticle_fathersort')
|
|
DROP INDEX UQ_article_fatherarticle_fathersort ON article;
|
|
GO
|
|
|
|
-- Drop the default constraints bound to the old column names.
|
|
IF EXISTS (SELECT 1 FROM sys.default_constraints WHERE name = 'DF_article_is_father')
|
|
ALTER TABLE article DROP CONSTRAINT DF_article_is_father;
|
|
IF EXISTS (SELECT 1 FROM sys.default_constraints WHERE name = 'DF_article_fathersort')
|
|
ALTER TABLE article DROP CONSTRAINT DF_article_fathersort;
|
|
GO
|
|
|
|
-- Drop foreign keys bound to the old columns.
|
|
IF EXISTS (SELECT 1 FROM sys.foreign_keys WHERE name = 'FK_article_fatherarticle')
|
|
ALTER TABLE article DROP CONSTRAINT FK_article_fatherarticle;
|
|
IF EXISTS (SELECT 1 FROM sys.foreign_keys WHERE name = 'FK_article_fatherattributename')
|
|
ALTER TABLE article DROP CONSTRAINT FK_article_fatherattributename;
|
|
GO
|
|
|
|
-- Rename the columns (each sp_rename must be its own batch).
|
|
IF COL_LENGTH('article', 'fatherarticle_id') IS NOT NULL
|
|
AND COL_LENGTH('article', 'parentarticle_id') IS NULL
|
|
EXEC sp_rename 'article.fatherarticle_id', 'parentarticle_id', 'COLUMN';
|
|
GO
|
|
|
|
IF COL_LENGTH('article', 'fatherattributename_id') IS NOT NULL
|
|
AND COL_LENGTH('article', 'parentattributename_id') IS NULL
|
|
EXEC sp_rename 'article.fatherattributename_id', 'parentattributename_id', 'COLUMN';
|
|
GO
|
|
|
|
IF COL_LENGTH('article', 'fathersort') IS NOT NULL
|
|
AND COL_LENGTH('article', 'parentsort') IS NULL
|
|
EXEC sp_rename 'article.fathersort', 'parentsort', 'COLUMN';
|
|
GO
|
|
|
|
IF COL_LENGTH('article', 'is_father') IS NOT NULL
|
|
AND COL_LENGTH('article', 'is_parent') IS NULL
|
|
EXEC sp_rename 'article.is_father', 'is_parent', 'COLUMN';
|
|
GO
|
|
|
|
COMMIT TRANSACTION;
|
|
GO
|
|
|
|
-- Recreate the constraints under their new names (after the rename batches).
|
|
IF NOT EXISTS (SELECT 1 FROM sys.foreign_keys WHERE name = 'FK_article_parentarticle')
|
|
ALTER TABLE article ADD CONSTRAINT FK_article_parentarticle
|
|
FOREIGN KEY (parentarticle_id) REFERENCES article(id) ON DELETE NO ACTION;
|
|
GO
|
|
|
|
IF NOT EXISTS (SELECT 1 FROM sys.foreign_keys WHERE name = 'FK_article_parentattributename')
|
|
ALTER TABLE article ADD CONSTRAINT FK_article_parentattributename
|
|
FOREIGN KEY (parentattributename_id) REFERENCES attributename(id) ON DELETE NO ACTION;
|
|
GO
|
|
|
|
IF NOT EXISTS (SELECT 1 FROM sys.default_constraints WHERE name = 'DF_article_is_parent')
|
|
ALTER TABLE article ADD CONSTRAINT DF_article_is_parent DEFAULT (0) FOR is_parent;
|
|
GO
|
|
|
|
IF NOT EXISTS (SELECT 1 FROM sys.default_constraints WHERE name = 'DF_article_parentsort')
|
|
ALTER TABLE article ADD CONSTRAINT DF_article_parentsort DEFAULT (0) FOR parentsort;
|
|
GO
|
|
|
|
IF NOT EXISTS (SELECT 1 FROM sys.indexes WHERE name = 'UQ_article_parentarticle_parentsort')
|
|
CREATE UNIQUE INDEX UQ_article_parentarticle_parentsort
|
|
ON article (parentarticle_id, parentsort)
|
|
WHERE parentarticle_id IS NOT NULL;
|
|
GO
|
|
|
|
-- Verify
|
|
SELECT 'COL:' + c.name AS result
|
|
FROM sys.columns c
|
|
WHERE c.object_id = OBJECT_ID('article')
|
|
AND (c.name LIKE '%father%' OR c.name LIKE '%parent%');
|
|
GO |