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[MariaDB] Use ifNotExists clause correctly for unique key constraint #4250

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Sep 27, 2024
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[MariaDB] Use ifNotExists clause correctly for unique key constraint #4250

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3 changes: 1 addition & 2 deletions sql/mariadb/MariaDBParser.g4
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Original file line number Diff line number Diff line change
Expand Up @@ -709,8 +709,7 @@ alterSpecification
| ADD indexFormat = (INDEX | KEY) ifNotExists? uid? indexType? // here ifNotExists is MariaDB-specific only
indexColumnNames indexOption* # alterByAddIndex
| ADD (CONSTRAINT name = uid?)? PRIMARY KEY index = uid? indexType? indexColumnNames indexOption* # alterByAddPrimaryKey
| ADD (CONSTRAINT name = uid?)? UNIQUE ifNotExists? indexFormat = (INDEX | KEY)? indexName = uid? indexType? indexColumnNames indexOption* #
alterByAddUniqueKey
| ADD (CONSTRAINT name = uid?)? UNIQUE indexFormat = (INDEX | KEY)? ifNotExists? indexName = uid? indexType? indexColumnNames indexOption* #alterByAddUniqueKey
| ADD keyType = (FULLTEXT | SPATIAL) indexFormat = (INDEX | KEY)? uid? indexColumnNames indexOption* # alterByAddSpecialIndex
| ADD (CONSTRAINT name = uid?)? FOREIGN KEY ifNotExists? // here ifNotExists is MariaDB-specific only
indexName = uid? indexColumnNames referenceDefinition # alterByAddForeignKey
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5 changes: 5 additions & 0 deletions sql/mariadb/examples/fast/ddl_alter.sql
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Expand Up @@ -128,6 +128,11 @@ rename user user1@100.200.1.1 to user2@2001:0db8:85a3:0000:0000:8a2e:0370:7334;
#end
ALTER TABLE t1 ADD PARTITION (PARTITION p3 VALUES LESS THAN (2002));
ALTER TABLE t1 ADD PARTITION IF NOT EXISTS (PARTITION p3 VALUES LESS THAN (2002));
ALTER TABLE my_table
ADD CONSTRAINT my_table_to_dealers_fk
FOREIGN KEY IF NOT EXISTS (dealer_id) REFERENCES n_dealers (id),
ADD CONSTRAINT my_table_trigger_ranking_class_version_dealer_uk UNIQUE KEY IF NOT EXISTS (trigger_id, ranking_criteria, classification_id, version, dealer_id),
ADD CONSTRAINT trigger_classification_to_trigger_name_fk FOREIGN KEY IF NOT EXISTS (trigger_id) REFERENCES n_vulnerability_triggers (id);
-- Alter sequence
ALTER SEQUENCE IF EXISTS s2 start=100;
ALTER SEQUENCE s1 CACHE=1000 NOCYCLE RESTART WITH 1;
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