Obtaining the database schema, tables, columns, and primary keys in a single SQL call
I am currently writing an EntityFramework reverse engineer code-first generator. It will generate POCO classes, DbContext and Code First mapping for an existing database.
There is one already in Entity Framework Power Tools Beta 2 However this one is going to do the job right, and include table filtering!
Watch this space...
There is one already in Entity Framework Power Tools Beta 2 However this one is going to do the job right, and include table filtering!
Watch this space...
SELECT [Extent1].[SchemaName],
[Extent1].[Name] AS TableName,
[Extent1].[TABLE_TYPE] AS TableType,
[UnionAll1].[Ordinal],
[UnionAll1].[Name] AS ColumnName,
[UnionAll1].[IsNullable],
[UnionAll1].[TypeName],
ISNULL([UnionAll1].[MaxLength],0) AS MaxLength,
ISNULL([UnionAll1].[Precision], 0) AS Precision,
ISNULL([UnionAll1].[Default], '') AS [Default],
ISNULL([UnionAll1].[DateTimePrecision], '') AS [DateTimePrecision],
ISNULL([UnionAll1].[Scale], 0) AS Scale,
[UnionAll1].[IsIdentity],
[UnionAll1].[IsStoreGenerated],
CASE WHEN ([Project5].[C2] IS NULL) THEN CAST(0 AS BIT)
ELSE [Project5].[C2]
END AS PrimaryKey
FROM (
SELECT QUOTENAME(TABLE_SCHEMA) + QUOTENAME(TABLE_NAME) [Id],
TABLE_SCHEMA [SchemaName],
TABLE_NAME [Name],
TABLE_TYPE
FROM INFORMATION_SCHEMA.TABLES
WHERE TABLE_TYPE IN ('BASE TABLE', 'VIEW')
) AS [Extent1]
INNER JOIN (
SELECT [Extent2].[Id] AS [Id],
[Extent2].[Name] AS [Name],
[Extent2].[Ordinal] AS [Ordinal],
[Extent2].[IsNullable] AS [IsNullable],
[Extent2].[TypeName] AS [TypeName],
[Extent2].[MaxLength] AS [MaxLength],
[Extent2].[Precision] AS [Precision],
[Extent2].[Default],
[Extent2].[DateTimePrecision] AS [DateTimePrecision],
[Extent2].[Scale] AS [Scale],
[Extent2].[IsIdentity] AS [IsIdentity],
[Extent2].[IsStoreGenerated] AS [IsStoreGenerated],
0 AS [C1],
[Extent2].[ParentId] AS [ParentId]
FROM (
SELECT QUOTENAME(c.TABLE_SCHEMA) + QUOTENAME(c.TABLE_NAME) + QUOTENAME(c.COLUMN_NAME) [Id],
QUOTENAME(c.TABLE_SCHEMA) + QUOTENAME(c.TABLE_NAME) [ParentId],
c.COLUMN_NAME [Name],
c.ORDINAL_POSITION [Ordinal],
CAST(CASE c.IS_NULLABLE
WHEN 'YES' THEN 1
WHEN 'NO' THEN 0
ELSE 0
END AS BIT) [IsNullable],
CASE WHEN c.DATA_TYPE IN ('varchar', 'nvarchar', 'varbinary')
AND c.CHARACTER_MAXIMUM_LENGTH = -1 THEN c.DATA_TYPE + '(max)'
ELSE c.DATA_TYPE
END AS [TypeName],
c.CHARACTER_MAXIMUM_LENGTH [MaxLength],
CAST(c.NUMERIC_PRECISION AS INTEGER) [Precision],
CAST(c.DATETIME_PRECISION AS INTEGER) [DateTimePrecision],
CAST(c.NUMERIC_SCALE AS INTEGER) [Scale],
c.COLLATION_CATALOG [CollationCatalog],
c.COLLATION_SCHEMA [CollationSchema],
c.COLLATION_NAME [CollationName],
c.CHARACTER_SET_CATALOG [CharacterSetCatalog],
c.CHARACTER_SET_SCHEMA [CharacterSetSchema],
c.CHARACTER_SET_NAME [CharacterSetName],
CAST(0 AS BIT) AS [IsMultiSet],
CAST(COLUMNPROPERTY(OBJECT_ID(QUOTENAME(c.TABLE_SCHEMA) + '.' + QUOTENAME(c.TABLE_NAME)), c.COLUMN_NAME, 'IsIdentity') AS BIT) AS [IsIdentity],
CAST(COLUMNPROPERTY(OBJECT_ID(QUOTENAME(c.TABLE_SCHEMA) + '.' + QUOTENAME(c.TABLE_NAME)), c.COLUMN_NAME, 'IsComputed')
| CASE WHEN c.DATA_TYPE = 'timestamp' THEN 1
ELSE 0
END AS BIT) AS [IsStoreGenerated],
c.COLUMN_DEFAULT AS [Default]
FROM INFORMATION_SCHEMA.COLUMNS c
INNER JOIN INFORMATION_SCHEMA.TABLES t
ON c.TABLE_CATALOG = t.TABLE_CATALOG
AND c.TABLE_SCHEMA = t.TABLE_SCHEMA
AND c.TABLE_NAME = t.TABLE_NAME
AND t.TABLE_TYPE IN ('BASE TABLE', 'VIEW')
) AS [Extent2]
UNION ALL
SELECT [Extent3].[Id] AS [Id],
[Extent3].[Name] AS [Name],
[Extent3].[Ordinal] AS [Ordinal],
[Extent3].[IsNullable] AS [IsNullable],
[Extent3].[TypeName] AS [TypeName],
[Extent3].[MaxLength] AS [MaxLength],
[Extent3].[Precision] AS [Precision],
[Extent3].[Default],
[Extent3].[DateTimePrecision] AS [DateTimePrecision],
[Extent3].[Scale] AS [Scale],
[Extent3].[IsIdentity] AS [IsIdentity],
[Extent3].[IsStoreGenerated] AS [IsStoreGenerated],
6 AS [C1],
[Extent3].[ParentId] AS [ParentId]
FROM (
SELECT QUOTENAME(c.TABLE_SCHEMA) + QUOTENAME(c.TABLE_NAME) + QUOTENAME(c.COLUMN_NAME) [Id],
QUOTENAME(c.TABLE_SCHEMA) + QUOTENAME(c.TABLE_NAME) [ParentId],
c.COLUMN_NAME [Name],
c.ORDINAL_POSITION [Ordinal],
CAST(CASE c.IS_NULLABLE
WHEN 'YES' THEN 1
WHEN 'NO' THEN 0
ELSE 0
END AS BIT) [IsNullable],
CASE WHEN c.DATA_TYPE IN ('varchar', 'nvarchar', 'varbinary')
AND c.CHARACTER_MAXIMUM_LENGTH = -1 THEN c.DATA_TYPE + '(max)'
ELSE c.DATA_TYPE
END AS [TypeName],
c.CHARACTER_MAXIMUM_LENGTH [MaxLength],
CAST(c.NUMERIC_PRECISION AS INTEGER) [Precision],
CAST(c.DATETIME_PRECISION AS INTEGER) AS [DateTimePrecision],
CAST(c.NUMERIC_SCALE AS INTEGER) [Scale],
c.COLLATION_CATALOG [CollationCatalog],
c.COLLATION_SCHEMA [CollationSchema],
c.COLLATION_NAME [CollationName],
c.CHARACTER_SET_CATALOG [CharacterSetCatalog],
c.CHARACTER_SET_SCHEMA [CharacterSetSchema],
c.CHARACTER_SET_NAME [CharacterSetName],
CAST(0 AS BIT) AS [IsMultiSet],
CAST(COLUMNPROPERTY(OBJECT_ID(QUOTENAME(c.TABLE_SCHEMA) + '.' + QUOTENAME(c.TABLE_NAME)), c.COLUMN_NAME, 'IsIdentity') AS BIT) AS [IsIdentity],
CAST(COLUMNPROPERTY(OBJECT_ID(QUOTENAME(c.TABLE_SCHEMA) + '.' + QUOTENAME(c.TABLE_NAME)), c.COLUMN_NAME, 'IsComputed')
| CASE WHEN c.DATA_TYPE = 'timestamp' THEN 1
ELSE 0
END AS BIT) AS [IsStoreGenerated],
c.COLUMN_DEFAULT [Default]
FROM INFORMATION_SCHEMA.COLUMNS c
INNER JOIN INFORMATION_SCHEMA.VIEWS v
ON c.TABLE_CATALOG = v.TABLE_CATALOG
AND c.TABLE_SCHEMA = v.TABLE_SCHEMA
AND c.TABLE_NAME = v.TABLE_NAME
WHERE NOT (
v.TABLE_SCHEMA = 'dbo'
AND v.TABLE_NAME IN ('syssegments', 'sysconstraints')
AND SUBSTRING(CAST(SERVERPROPERTY('productversion') AS VARCHAR(20)), 1, 1) = 8
)
) AS [Extent3]
) AS [UnionAll1]
ON (0 = [UnionAll1].[C1])
AND ([Extent1].[Id] = [UnionAll1].[ParentId])
LEFT OUTER JOIN (
SELECT [UnionAll2].[Id] AS [C1],
CAST(1 AS BIT) AS [C2]
FROM (
SELECT QUOTENAME(tc.CONSTRAINT_SCHEMA) + QUOTENAME(tc.CONSTRAINT_NAME) [Id],
QUOTENAME(tc.TABLE_SCHEMA) + QUOTENAME(tc.TABLE_NAME) [ParentId],
tc.CONSTRAINT_NAME [Name],
tc.CONSTRAINT_TYPE [ConstraintType],
CAST(CASE tc.IS_DEFERRABLE
WHEN 'NO' THEN 0
ELSE 1
END AS BIT) [IsDeferrable],
CAST(CASE tc.INITIALLY_DEFERRED
WHEN 'NO' THEN 0
ELSE 1
END AS BIT) [IsInitiallyDeferred]
FROM INFORMATION_SCHEMA.TABLE_CONSTRAINTS tc
WHERE tc.TABLE_NAME IS NOT NULL
) AS [Extent4]
INNER JOIN (
SELECT 7 AS [C1],
[Extent5].[ConstraintId] AS [ConstraintId],
[Extent6].[Id] AS [Id]
FROM (
SELECT QUOTENAME(CONSTRAINT_SCHEMA) + QUOTENAME(CONSTRAINT_NAME) [ConstraintId],
QUOTENAME(TABLE_SCHEMA) + QUOTENAME(TABLE_NAME) + QUOTENAME(COLUMN_NAME) [ColumnId]
FROM INFORMATION_SCHEMA.KEY_COLUMN_USAGE
) AS [Extent5]
INNER JOIN (
SELECT QUOTENAME(c.TABLE_SCHEMA) + QUOTENAME(c.TABLE_NAME) + QUOTENAME(c.COLUMN_NAME) [Id],
QUOTENAME(c.TABLE_SCHEMA) + QUOTENAME(c.TABLE_NAME) [ParentId],
c.COLUMN_NAME [Name],
c.ORDINAL_POSITION [Ordinal],
CAST(CASE c.IS_NULLABLE
WHEN 'YES' THEN 1
WHEN 'NO' THEN 0
ELSE 0
END AS BIT) [IsNullable],
CASE WHEN c.DATA_TYPE IN ('varchar', 'nvarchar', 'varbinary')
AND c.CHARACTER_MAXIMUM_LENGTH = -1 THEN c.DATA_TYPE + '(max)'
ELSE c.DATA_TYPE
END AS [TypeName],
c.CHARACTER_MAXIMUM_LENGTH [MaxLength],
CAST(c.NUMERIC_PRECISION AS INTEGER) [Precision],
CAST(c.DATETIME_PRECISION AS INTEGER) [DateTimePrecision],
CAST(c.NUMERIC_SCALE AS INTEGER) [Scale],
c.COLLATION_CATALOG [CollationCatalog],
c.COLLATION_SCHEMA [CollationSchema],
c.COLLATION_NAME [CollationName],
c.CHARACTER_SET_CATALOG [CharacterSetCatalog],
c.CHARACTER_SET_SCHEMA [CharacterSetSchema],
c.CHARACTER_SET_NAME [CharacterSetName],
CAST(0 AS BIT) AS [IsMultiSet],
CAST(COLUMNPROPERTY(OBJECT_ID(QUOTENAME(c.TABLE_SCHEMA) + '.' + QUOTENAME(c.TABLE_NAME)),
c.COLUMN_NAME, 'IsIdentity') AS BIT) AS [IsIdentity],
CAST(COLUMNPROPERTY(OBJECT_ID(QUOTENAME(c.TABLE_SCHEMA) + '.' + QUOTENAME(c.TABLE_NAME)),
c.COLUMN_NAME, 'IsComputed')
| CASE WHEN c.DATA_TYPE = 'timestamp' THEN 1
ELSE 0
END AS BIT) AS [IsStoreGenerated],
c.COLUMN_DEFAULT AS [Default]
FROM INFORMATION_SCHEMA.COLUMNS c
INNER JOIN INFORMATION_SCHEMA.TABLES t
ON c.TABLE_CATALOG = t.TABLE_CATALOG
AND c.TABLE_SCHEMA = t.TABLE_SCHEMA
AND c.TABLE_NAME = t.TABLE_NAME
AND t.TABLE_TYPE IN ('BASE TABLE', 'VIEW')
) AS [Extent6]
ON [Extent6].[Id] = [Extent5].[ColumnId]
UNION ALL
SELECT 11 AS [C1],
[Extent7].[ConstraintId] AS [ConstraintId],
[Extent8].[Id] AS [Id]
FROM (
SELECT CAST( NULL AS NVARCHAR (1)) [ConstraintId], CAST( NULL AS NVARCHAR (MAX)) [ColumnId] WHERE 1= 2
) AS [Extent7]
INNER JOIN (
SELECT QUOTENAME(c.TABLE_SCHEMA) + QUOTENAME(c.TABLE_NAME) + QUOTENAME(c.COLUMN_NAME) [Id],
QUOTENAME(c.TABLE_SCHEMA) + QUOTENAME(c.TABLE_NAME) [ParentId],
c.COLUMN_NAME [Name],
c.ORDINAL_POSITION [Ordinal],
CAST(CASE c.IS_NULLABLE
WHEN 'YES' THEN 1
WHEN 'NO' THEN 0
ELSE 0
END AS BIT) [IsNullable],
CASE WHEN c.DATA_TYPE IN ('varchar', 'nvarchar', 'varbinary')
AND c.CHARACTER_MAXIMUM_LENGTH = -1 THEN c.DATA_TYPE + '(max)'
ELSE c.DATA_TYPE
END AS [TypeName],
c.CHARACTER_MAXIMUM_LENGTH [MaxLength],
CAST(c.NUMERIC_PRECISION AS INTEGER) [Precision],
CAST(c.DATETIME_PRECISION AS INTEGER) AS [DateTimePrecision],
CAST(c.NUMERIC_SCALE AS INTEGER) [Scale],
c.COLLATION_CATALOG [CollationCatalog],
c.COLLATION_SCHEMA [CollationSchema],
c.COLLATION_NAME [CollationName],
c.CHARACTER_SET_CATALOG [CharacterSetCatalog],
c.CHARACTER_SET_SCHEMA [CharacterSetSchema],
c.CHARACTER_SET_NAME [CharacterSetName],
CAST(0 AS BIT) AS [IsMultiSet],
CAST(COLUMNPROPERTY(OBJECT_ID(QUOTENAME(c.TABLE_SCHEMA) + '.' + QUOTENAME(c.TABLE_NAME)),
c.COLUMN_NAME, 'IsIdentity') AS BIT) AS [IsIdentity],
CAST(COLUMNPROPERTY(OBJECT_ID(QUOTENAME(c.TABLE_SCHEMA) + '.' + QUOTENAME(c.TABLE_NAME)),
c.COLUMN_NAME, 'IsComputed')
| CASE WHEN c.DATA_TYPE = 'timestamp' THEN 1
ELSE 0
END AS BIT) AS [IsStoreGenerated],
c.COLUMN_DEFAULT [Default]
FROM INFORMATION_SCHEMA.COLUMNS c
INNER JOIN INFORMATION_SCHEMA.VIEWS v
ON c.TABLE_CATALOG = v.TABLE_CATALOG
AND c.TABLE_SCHEMA = v.TABLE_SCHEMA
AND c.TABLE_NAME = v.TABLE_NAME
WHERE NOT (
v.TABLE_SCHEMA = 'dbo'
AND v.TABLE_NAME IN ('syssegments', 'sysconstraints')
AND SUBSTRING(CAST(SERVERPROPERTY('productversion') AS VARCHAR(20)), 1, 1) = 8
)
) AS [Extent8]
ON [Extent8].[Id] = [Extent7].[ColumnId]
) AS [UnionAll2]
ON (7 = [UnionAll2].[C1])
AND ([Extent4].[Id] = [UnionAll2].[ConstraintId])
WHERE [Extent4].[ConstraintType] = N'PRIMARY KEY'
) AS [Project5]
ON [UnionAll1].[Id] = [Project5].[C1]
WHERE NOT ([Extent1].[Name] IN ('EdmMetadata', '__MigrationHistory'))
Do not add the following as it slows down the query by 97%. Do the sorting within your code instead.
ORDER BY [Extent1].[CatalogName],
[Extent1].[SchemaName],
[Extent1].[Name],
[UnionAll1].[Ordinal]
Foreign Keys for all tables in database:
SELECT FK_Table = FK.TABLE_NAME,
FK_Column = CU.COLUMN_NAME,
PK_Table = PK.TABLE_NAME,
PK_Column = PT.COLUMN_NAME,
Constraint_Name = C.CONSTRAINT_NAME,
FK.TABLE_SCHEMA AS fkSchema,
PK.TABLE_SCHEMA AS pkSchema
FROM INFORMATION_SCHEMA.REFERENTIAL_CONSTRAINTS C
INNER JOIN INFORMATION_SCHEMA.TABLE_CONSTRAINTS FK
ON C.CONSTRAINT_NAME = FK.CONSTRAINT_NAME
INNER JOIN INFORMATION_SCHEMA.TABLE_CONSTRAINTS PK
ON C.UNIQUE_CONSTRAINT_NAME = PK.CONSTRAINT_NAME
INNER JOIN INFORMATION_SCHEMA.KEY_COLUMN_USAGE CU
ON C.CONSTRAINT_NAME = CU.CONSTRAINT_NAME
INNER JOIN (
SELECT i1.TABLE_NAME,
i2.COLUMN_NAME
FROM INFORMATION_SCHEMA.TABLE_CONSTRAINTS i1
INNER JOIN INFORMATION_SCHEMA.KEY_COLUMN_USAGE i2
ON i1.CONSTRAINT_NAME = i2.CONSTRAINT_NAME
WHERE i1.CONSTRAINT_TYPE = 'PRIMARY KEY'
) PT
ON PT.TABLE_NAME = PK.TABLE_NAME
ORDER BY FK.TABLE_NAME, CU.COLUMN_NAME