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Store Procedure To Create Script for Create Table

Posted By:Lakhan Pal Garg       Posted Date: October 28, 2009    Points: 10    Category: SQL Query    URL: http://www.dotnetspark.com  
 

Store Procedure To Create Script for Create Table.

Following is the store procedure to create script for create table. this will create script for all constraint, description of columns, and index etc.

Store Procedure Script:

ALTER PROCEDURE sp_CreateTableScript
(
@TableName SYSNAME,
@IncludeConstraints BIT = 1,
@IncludeIndexes BIT = 1,
@NewTableName SYSNAME = NULL,
@UseSystemDataTypes BIT = 0
)
AS
BEGIN
SET NOCOUNT ON;
DECLARE @MainDefinition TABLE
(
FieldValue NVARCHAR(500)
)
DECLARE @DBName SYSNAME
DECLARE @ClusteredPK BIT
DECLARE @TableSchema NVARCHAR(255)
SET @DBName = DB_NAME(DB_ID())
SELECT @TableName = name FROM sysobjects WHERE id = OBJECT_ID(@TableName)
DECLARE @ShowFields TABLE
(
FieldID INT IDENTITY(1,1),
DatabaseName VARCHAR(100),
TableOwner VARCHAR(100),
TableName VARCHAR(100),
FieldName VARCHAR(100),
ColumnPosition INT,
ColumnDefaultValue VARCHAR(100),
ColumnDefaultName VARCHAR(100),
IsNullable BIT,
DataType VARCHAR(100),
MaxLength INT,
NumericPrecision INT,
NumericScale INT,
DomainName VARCHAR(100),
FieldListingName VARCHAR(110),
FieldDefinition CHAR(1),
IdentityColumn BIT,
IdentitySeed INT,
IdentityIncrement INT,
IsCharColumn BIT
)
DECLARE @HoldingArea TABLE
(
FldID SMALLINT IDENTITY(1,1),
Flds VARCHAR(4000),
FldValue CHAR(1) DEFAULT(0)
)
DECLARE @PKObjectID TABLE
(
ObjectID INT
)
DECLARE @Uniques TABLE
(
ObjectID INT
)
DECLARE @HoldingAreaValues TABLE
(
FldID SMALLINT IDENTITY(1,1),
Flds VARCHAR(4000),
FldValue CHAR(1) DEFAULT(0)
)
DECLARE @Definition TABLE
(
DefinitionID SMALLINT IDENTITY(1,1),
FieldValue NVARCHAR(500)
)
INSERT INTO @ShowFields
(
DatabaseName,
TableOwner,
TableName,
FieldName,
ColumnPosition,
ColumnDefaultValue,
ColumnDefaultName,
IsNullable,
DataType,
MaxLength,
NumericPrecision,
NumericScale,
DomainName,
FieldListingName,
FieldDefinition,
IdentityColumn,
IdentitySeed,
IdentityIncrement,
IsCharColumn
)
SELECT
DB_NAME(),
TABLE_SCHEMA,
TABLE_NAME,
COLUMN_NAME,
CAST(ORDINAL_POSITION AS INT),
COLUMN_DEFAULT,
dobj.name AS ColumnDefaultName,
CASE WHEN c.IS_NULLABLE = 'YES' THEN 1 ELSE 0 END,
DATA_TYPE,
CAST(CHARACTER_MAXIMUM_LENGTH AS INT),
CAST(NUMERIC_PRECISION AS INT),
CAST(NUMERIC_SCALE AS INT),
DOMAIN_NAME,
COLUMN_NAME + ',','' AS FieldDefinition,
CASE WHEN ic.object_id IS NULL THEN 0 ELSE 1 END AS IdentityColumn,
CAST(ISNULL(ic.seed_value,0) AS INT) AS IdentitySeed,
CAST(ISNULL(ic.increment_value,0) AS INT) AS IdentityIncrement,
CASE WHEN st.collation_name IS NOT NULL THEN 1 ELSE 0 END AS IsCharColumn
FROM
INFORMATION_SCHEMA.COLUMNS c
JOIN sys.columns sc ON c.TABLE_NAME = OBJECT_NAME(sc.object_id) AND c.COLUMN_NAME = sc.Name
LEFT JOIN sys.identity_columns ic ON c.TABLE_NAME = OBJECT_NAME(ic.object_id) AND c.COLUMN_NAME = ic.Name
JOIN sys.types st ON COALESCE(c.DOMAIN_NAME,c.DATA_TYPE) = st.name
LEFT OUTER JOIN sys.objects dobj ON dobj.object_id = sc.default_object_id AND dobj.type = 'D'
WHERE c.TABLE_NAME = @TableName
ORDER BY
c.TABLE_NAME, c.ORDINAL_POSITION
SELECT TOP 1 @TableSchema = TableOwner
FROM @ShowFields
INSERT INTO @HoldingArea (Flds) VALUES('(')
INSERT INTO @Definition(FieldValue)
VALUES('CREATE TABLE ' + CASE WHEN @NewTableName IS NOT NULL THEN @NewTableName ELSE @TableSchema + '.' + @TableName END)
INSERT INTO @Definition(FieldValue)
VALUES('(')
INSERT INTO @Definition(FieldValue)
SELECT
CHAR(10) + FieldName + ' ' +
CASE
WHEN DomainName IS NOT NULL AND @UseSystemDataTypes = 0 THEN
DomainName + CASE WHEN IsNullable = 1 THEN ' NULL ' ELSE ' NOT NULL ' END
ELSE UPPER(DataType) +
CASE WHEN IsCharColumn = 1 THEN '(' + CAST(MaxLength AS VARCHAR(10)) + ')' ELSE '' END +
CASE WHEN IdentityColumn = 1 THEN
' IDENTITY(' + CAST(IdentitySeed AS VARCHAR(5))+ ',' + CAST(IdentityIncrement AS VARCHAR(5)) + ')' ELSE '' END +
CASE WHEN IsNullable = 1 THEN ' NULL ' ELSE ' NOT NULL ' END +
CASE WHEN ColumnDefaultName IS NOT NULL AND @IncludeConstraints = 1 THEN
'CONSTRAINT [' + ColumnDefaultName + '] DEFAULT' + UPPER(ColumnDefaultValue) ELSE '' END
END +
CASE WHEN FieldID = (SELECT MAX(FieldID) FROM @ShowFields) THEN '' ELSE ',' END
FROM @ShowFields
IF @IncludeConstraints = 1
BEGIN
INSERT INTO @Definition(FieldValue)
SELECT
',CONSTRAINT [' + name + '] FOREIGN KEY (' + ParentColumns + ') REFERENCES [' + ReferencedObject + '](' + ReferencedColumns + ')'
FROM
(
SELECT
ReferencedObject = OBJECT_NAME(fk.referenced_object_id), ParentObject = OBJECT_NAME(parent_object_id),fk.name,
REVERSE(SUBSTRING(REVERSE((
SELECT cp.name + ','
FROM
sys.foreign_key_columns fkc
JOIN sys.columns cp ON fkc.parent_object_id = cp.object_id AND fkc.parent_column_id = cp.column_id
WHERE fkc.constraint_object_id = fk.object_id
FOR XML PATH('')
)), 2, 8000)) ParentColumns,
REVERSE(SUBSTRING(REVERSE((
SELECT cr.name + ','
FROM
sys.foreign_key_columns fkc
JOIN sys.columns cr ON fkc.referenced_object_id = cr.object_id AND fkc.referenced_column_id = cr.column_id
WHERE fkc.constraint_object_id = fk.object_id
FOR XML PATH('')
)), 2, 8000)) ReferencedColumns
FROM sys.foreign_keys fk
) a
WHERE ParentObject = @TableName
INSERT INTO @Definition(FieldValue)
SELECT',CONSTRAINT [' + name + '] CHECK ' + definition FROM sys.check_constraints
WHERE OBJECT_NAME(parent_object_id) = @TableName
INSERT INTO @PKObjectID(ObjectID)
SELECT DISTINCT
PKObject = cco.object_id
FROM
sys.key_constraints cco
JOIN sys.index_columns cc ON cco.parent_object_id = cc.object_id AND cco.unique_index_id = cc.index_id
JOIN sys.indexes i ON cc.object_id = i.object_id AND cc.index_id = i.index_id
WHERE
OBJECT_NAME(parent_object_id) = @TableName AND
i.type = 1 AND
is_primary_key = 1
INSERT INTO @Uniques(ObjectID)
SELECT DISTINCT
PKObject = cco.object_id
FROM
sys.key_constraints cco
JOIN sys.index_columns cc ON cco.parent_object_id = cc.object_id AND cco.unique_index_id = cc.index_id
JOIN sys.indexes i ON cc.object_id = i.object_id AND cc.index_id = i.index_id
WHERE
OBJECT_NAME(parent_object_id) = @TableName AND
i.type = 2 AND
is_primary_key = 0 AND
is_unique_constraint = 1
SET @ClusteredPK = CASE WHEN @@ROWCOUNT > 0 THEN 1 ELSE 0 END
INSERT INTO @Definition(FieldValue)
SELECT ',CONSTRAINT ' + name + CASE type WHEN 'PK' THEN
' PRIMARY KEY ' + CASE WHEN pk.ObjectID IS NULL THEN ' NONCLUSTERED ' ELSE ' CLUSTERED ' END
WHEN 'UQ' THEN ' UNIQUE ' END + CASE WHEN u.ObjectID IS NOT NULL THEN ' NONCLUSTERED ' ELSE '' END + '(' +
REVERSE(SUBSTRING(REVERSE((
SELECT
c.name + + CASE WHEN cc.is_descending_key = 1 THEN ' DESC' ELSE ' ASC' END + ','
FROM
sys.key_constraints ccok
LEFT JOIN sys.index_columns cc ON ccok.parent_object_id = cc.object_id AND cco.unique_index_id = cc.index_id
LEFT JOIN sys.columns c ON cc.object_id = c.object_id AND cc.column_id = c.column_id
LEFT JOIN sys.indexes i ON cc.object_id = i.object_id AND cc.index_id = i.index_id
WHERE
i.object_id = ccok.parent_object_id AND
ccok.object_id = cco.object_id
FOR XML PATH('')
)), 2, 8000)) + ')'
FROM
sys.key_constraints cco
LEFT JOIN @PKObjectID pk ON cco.object_id = pk.ObjectID
LEFT JOIN @Uniques u ON cco.object_id = u.objectID
WHERE
OBJECT_NAME(cco.parent_object_id) = @TableName
END
INSERT INTO @Definition(FieldValue)
VALUES(')')
INSERT INTO @Definition(FieldValue)
VALUES('GO')
IF @IncludeIndexes = 1
BEGIN
INSERT INTO @Definition(FieldValue)
SELECT
ISNULL(('CREATE ' + type_desc + ' INDEX [' + [name] COLLATE SQL_Latin1_General_CP1_CI_AS + '] ON [' + OBJECT_NAME(object_id) + '] (' +
REVERSE(SUBSTRING(REVERSE((
SELECT name + CASE WHEN sc.is_descending_key = 1 THEN ' DESC' ELSE ' ASC' END + ','
FROM
sys.index_columns sc
JOIN sys.columns c ON sc.object_id = c.object_id AND sc.column_id = c.column_id
WHERE
OBJECT_NAME(sc.object_id) = @TableName AND
sc.object_id = i.object_id AND
sc.index_id = i.index_id
ORDER BY index_column_id ASC
FOR XML PATH('')
)), 2, 8000)) + ')' ),'')
FROM sys.indexes i
WHERE
OBJECT_NAME(object_id) = @TableName
AND CASE WHEN @ClusteredPK = 1 AND is_primary_key = 1 AND type = 1 THEN 0 ELSE 1 END = 1
AND is_unique_constraint = 0
AND is_primary_key = 0
END
INSERT INTO @Definition(FieldValue)
SELECT 'EXEC sys.sp_addextendedproperty @name=N'''+name+''', @value=N'''+CONVERT(varchar(100),value)+''' , @level0type=N''SCHEMA'',@level0name=N''dbo'', @level1type=N''TABLE'',@level1name=N'''+@TableName+''',
@level2type=N''COLUMN'',@level2name=N'''+objName+''''
FROM ::fn_listextendedproperty(NULL, 'SCHEMA',
'dbo', 'TABLE', @TableName, 'COLUMN', NULL) WHERE CONVERT(varchar(100),value)<>''

INSERT INTO @MainDefinition(FieldValue)
SELECT FieldValue FROM @Definition
ORDER BY DefinitionID ASC
SELECT * FROM @MainDefinition
END

How to execute the above store procedure and get the create table script:
EXEC sp_CreateTableScript 'TableName'

Thanks & Regards
Lakhan Pal Garg
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