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Author: aduguid

SSDB.Primary_Keys_List.sql

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+WITH
+column_names  -- listing of all the columns used in the primary key
+AS
+(
+	SELECT  
+		  kc.object_id
+		, kc.parent_object_id
+		, PrimaryKeyName = QUOTENAME(OBJECT_NAME(kc.object_id))
+		, SchemaName = QUOTENAME(OBJECT_SCHEMA_NAME(kc.parent_object_id)) 
+		, TableName = QUOTENAME(OBJECT_NAME(kc.parent_object_id))
+		, ColumnName = COL_NAME(ob.object_id, ic.column_id)
+		, ic.key_ordinal
+		, key_number = CAST(kc.parent_object_id AS VARCHAR) + CAST(ic.key_ordinal AS VARCHAR)
+		, parent_number = CAST(kc.parent_object_id AS VARCHAR) + CAST(ic.key_ordinal - 1 AS VARCHAR)
+		, descending_key = CASE ic.is_descending_key WHEN 0 THEN 'ASC' ELSE 'DESC' END
+		, clustered_desc = CASE INDEXPROPERTY(kc.parent_object_id, OBJECT_NAME(kc.object_id),'IsClustered') WHEN 1 THEN 'CLUSTERED' ELSE 'NONCLUSTERED' END
+    FROM 
+		sys.key_constraints kc
+		INNER JOIN sys.objects ob on kc.parent_object_id = ob.object_id
+		INNER JOIN sys.indexes AS I ON KC.unique_index_id = I.index_id AND KC.parent_object_id = I.object_id 
+		INNER JOIN sys.index_columns ic ON I.object_id = IC.object_id AND I.index_id = IC.index_id
+    WHERE 
+		    kc.type = 'PK' 
+		AND ob.type = 'U'
+		AND ob.name not in ('dtproperties','sysdiagrams')  -- not true user tables
+		--AND COL_NAME(ob.object_id, ic.column_id) = N'$(targetColumn)'
+)
+,
+max_key_ordinal --get the max ordinal number for complete list of columns
+AS
+(
+	SELECT 		  
+		  object_id
+		, parent_object_id 
+		, max_ordinal_value = MAX(key_ordinal)
+	FROM column_names
+	GROUP BY
+		  object_id
+		, parent_object_id 
+)
+, 
+primary_key_columns(object_id, parent_object_id, PrimaryKeyName, ColumnNames, SchemaName, TableName, key_ordinal, key_number, clustered_desc)  -- recursive query to get all the columns in a comma separated list
+AS
+(
+	SELECT pt.object_id, pt.parent_object_id, pt.PrimaryKeyName, ColumnNames = CAST(pt.ColumnName + ' ' + pt.descending_key AS VARCHAR(MAX)), pt.SchemaName, pt.TableName, pt.key_ordinal, pt.key_number, pt.clustered_desc
+	FROM column_names pt
+	INNER JOIN column_names ch ON pt.key_number = ch.key_number 
+	WHERE pt.key_ordinal = 1 -- parent record
+	UNION ALL
+	SELECT pt.object_id, pt.parent_object_id, pt.PrimaryKeyName, CAST(ch.ColumnNames + ', ' + pt.ColumnName + ' ' + pt.descending_key AS VARCHAR(MAX)), pt.SchemaName, pt.TableName, pt.key_ordinal, pt.key_number, pt.clustered_desc
+	FROM column_names pt
+	INNER JOIN primary_key_columns ch ON pt.parent_number = ch.key_number --recursive part
+	WHERE pt.key_ordinal != 1  -- child record
+)
+SELECT 
+	  pk.PrimaryKeyName
+	, pk.SchemaName
+	, pk.TableName
+	, 'create_primary_key' = 'ALTER TABLE ' + pk.SchemaName + '.' + pk.TableName + ' ADD CONSTRAINT ' + pk.PrimaryKeyName + ' PRIMARY KEY ' + clustered_desc + ' (' + pk.ColumnNames + ') ' 
+	, 'drop_primary_key' = 'ALTER TABLE ' + pk.SchemaName + '.' + pk.TableName + ' DROP CONSTRAINT ' + pk.PrimaryKeyName
+FROM 
+primary_key_columns pk
+INNER JOIN max_key_ordinal mv ON mv.object_id = pk.object_id AND mv.parent_object_id = pk.parent_object_id AND mv.max_ordinal_value = pk.key_ordinal