From cba55729fec8002e615ffa48c132b279b2b8e3ac Mon Sep 17 00:00:00 2001
From: Andrew Yates <ayates@ebi.ac.uk>
Date: Wed, 23 Oct 2013 09:29:20 +0000
Subject: [PATCH] [ENSCORESW-694]. Adding a unique constraint to
alt_allele(gene_id).
Seems that our earlier design was incorrect and we do want to only
have 1 gene in 1 alt allele group. So adding the constraint in.
---
sql/patch_73_74_h.sql | 15 +++++++++++++++
sql/table.sql | 3 +++
2 files changed, 18 insertions(+)
create mode 100644 sql/patch_73_74_h.sql
diff --git a/sql/patch_73_74_h.sql b/sql/patch_73_74_h.sql
new file mode 100644
index 0000000000..40b893dfb4
--- /dev/null
+++ b/sql/patch_73_74_h.sql
@@ -0,0 +1,15 @@
+# patch_73_74_h.sql
+#
+# Title: Creating a unique index on alt_allele(gene_id)
+#
+# Description:
+#
+# Alt alleles only allow a gene to appear in one group. Enforce this
+# at the DB level
+
+CREATE UNIQUE INDEX gene_idx ON alt_allele(gene_id);
+
+# patch identifier
+INSERT INTO meta (species_id, meta_key, meta_value) VALUES (NULL, 'patch', 'patch_73_74_h.sql|alt_allele_unique_gene_idx');
+
+
diff --git a/sql/table.sql b/sql/table.sql
index d6a8c08a19..737a1fed65 100755
--- a/sql/table.sql
+++ b/sql/table.sql
@@ -274,6 +274,8 @@ INSERT INTO meta (species_id, meta_key, meta_value)
VALUES (NULL, 'patch', 'patch_73_74_f.sql|remove_pair_dna_align');
INSERT INTO meta (species_id, meta_key, meta_value)
VALUES (NULL, 'patch', 'patch_73_74_g.sql|add_transcript_idx_tise');
+INSERT INTO meta (species_id, meta_key, meta_value)
+ VALUES (NULL, 'patch', 'patch_73_74_h.sql|alt_allele_unique_gene_idx');
/**
@table meta_coord
@@ -405,6 +407,7 @@ CREATE TABLE alt_allele (
gene_id INT UNSIGNED NOT NULL,
PRIMARY KEY (alt_allele_id),
+ UNIQUE KEY gene_idx (gene_id),
KEY (gene_id,alt_allele_group_id)
) COLLATE=latin1_swedish_ci ENGINE=MyISAM;
--
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