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Fix duplicate check constraints when exporting from SQL Server #762

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Merged
hmiguim merged 2 commits into from
Mar 24, 2026
Merged

Fix duplicate check constraints when exporting from SQL Server #762

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Copilot Mar 3, 2026
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Fix check constraints duplicated multiple times when exporting from S…
Copilot Mar 3, 2026
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2 changes: 1 addition & 1 deletion ...-sql-server/src/main/java/com/databasepreservation/modules/sqlserver/SQLServerHelper.java
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Original file line number Diff line number Diff line change
Expand Up @@ -138,7 +138,7 @@ public String escapeTableName(String table) {

@Override
public String getCheckConstraintsSQL(String schemaName, String tableName) {
return "SELECT cc.CONSTRAINT_NAME AS CHECK_NAME, " + "cc.CHECK_CLAUSE AS CHECK_CONDITION "
return "SELECT DISTINCT cc.CONSTRAINT_NAME AS CHECK_NAME, " + "cc.CHECK_CLAUSE AS CHECK_CONDITION "
+ "FROM INFORMATION_SCHEMA.CHECK_CONSTRAINTS cc " + "INNER JOIN INFORMATION_SCHEMA.CONSTRAINT_COLUMN_USAGE c "
+ "ON cc.CONSTRAINT_NAME = c.CONSTRAINT_NAME " + "WHERE c.TABLE_NAME = '" + tableName + "' "
+ "AND c.TABLE_SCHEMA = '" + schemaName + "'";
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