Tag: SQL Server

USE DatabaseName
GO
SET NOCOUNT ON

DECLARE @TableName VARCHAR(255)
DECLARE @IndividualInserts BIT

SET @TableName = 'TableName'
SET @IndividualInserts = 0

DECLARE @TableStructure TABLE (ColumnName VARCHAR(255), DataType VARCHAR(50), [MaxLength] INT, [precision] INT, [scale] INT, is_nullable BIT, PrimaryKey BIT, ColumnID INT)
DECLARE @ColumnName VARCHAR(255)
DECLARE @DataType VARCHAR(50)
DECLARE @MaxLength INT
DECLARE @precision INT
DECLARE @scale INT
DECLARE @is_nullable BIT
DECLARE @PrimaryKey BIT
DECLARE @ColumnID INT
DECLARE @SelectQuery VARCHAR(MAX) = ''
DECLARE @ResultQuery VARCHAR(MAX) = ''
DECLARE @SQL NVARCHAR(MAX) = ''
DECLARE @CrLf VARCHAR(10) = CHAR(13) + CHAR(10)

INSERT INTO @TableStructure
SELECT 
    c.name 'Column Name',
    t.Name 'Data type',
    c.max_length 'Max Length',
    c.precision ,
    c.scale ,
    c.is_nullable,
    ISNULL(i.is_primary_key, 0) 'Primary Key',
	c.column_id
FROM    
    sys.columns c
INNER JOIN 
    sys.types t ON c.user_type_id = t.user_type_id
LEFT OUTER JOIN 
    sys.index_columns ic ON ic.object_id = c.object_id AND ic.column_id = c.column_id
LEFT OUTER JOIN 
    sys.indexes i ON ic.object_id = i.object_id AND ic.index_id = i.index_id
WHERE
    c.object_id = OBJECT_ID(@TableName) 
ORDER BY c.column_id

--SELECT * FROM @TableStructure

DECLARE TableCursor CURSOR FOR
SELECT * FROM @TableStructure 
ORDER BY ColumnID


OPEN TableCursor
FETCH NEXT FROM TableCursor INTO @ColumnName, @DataType, @MaxLength, @precision, @scale, @is_nullable, @PrimaryKey, @ColumnID
WHILE @@FETCH_STATUS = 0
BEGIN
	--SELECT @ColumnName, @DataType, @MaxLength, @precision, @scale, @is_nullable, @PrimaryKey, @ColumnID
	SET @ColumnName = '[' + @ColumnName + ']'
	IF LEN(@SelectQuery)=0 SET @SelectQuery='SELECT' + @CrLf + '''INSERT INTO ' + @TableName + ' (' 
	ELSE SET @SelectQuery = @SelectQuery + ',' --@CrLf + ',' 
	SET @SelectQuery = @SelectQuery + @ColumnName -- + '   -- ' + @DataType

	IF LEN(@ResultQuery)=0 
	BEGIN
		IF @IndividualInserts=0 SET @ResultQuery = 'UNION ALL SELECT CASE WHEN ROW_NUMBER() OVER(ORDER BY ' + @ColumnName + ') <> 1 THEN '','' ELSE '''' END +' + @CrLf + '''('
		ELSE SET @ResultQuery= @CrLf + '(' 
	END
	ELSE SET @ResultQuery = @ResultQuery + ','
	SELECT @ResultQuery = 
	CASE
		WHEN @DataType LIKE '%CHAR' 
		THEN @ResultQuery + '''+ COALESCE('''''''' + ' + @ColumnName + ' + '''''''',''NULL'') +'''
		WHEN @DataType LIKE '%DATETIME' 
		THEN @ResultQuery + '''+ COALESCE(''CONVERT(DATETIME,'''''' + CONVERT(VARCHAR,' + @ColumnName + ',21) + '''''',21)'',''NULL'') +'''		
		WHEN @DataType LIKE 'NUMERIC%' 
		THEN @ResultQuery + '''+ COALESCE(CONVERT(VARCHAR,' + @ColumnName + '),''NULL'') +'''
		WHEN @DataType = 'TEXT' 
		THEN @ResultQuery + '''+ COALESCE('''''''' + CONVERT(VARCHAR,' + @ColumnName + ') + '''''''',''NULL'') +'''
		WHEN @DataType LIKE '%INT' 
		THEN @ResultQuery + '''+ COALESCE(CONVERT(VARCHAR,' + @ColumnName + '),''NULL'') +'''
		WHEN @DataType = 'FLOAT' 
		THEN @ResultQuery + '''+ COALESCE(CONVERT(VARCHAR,' + @ColumnName + '),''NULL'') +'''
		ELSE @ResultQuery + '''+ COALESCE(' + @ColumnName + ',''NULL'') +'''
	END
	--SET @ResultQuery = @ResultQuery + '   -- ' + @DataType	
	
	FETCH NEXT FROM TableCursor INTO @ColumnName, @DataType, @MaxLength, @precision, @scale, @is_nullable, @PrimaryKey, @ColumnID
END
CLOSE TableCursor
DEALLOCATE TableCursor

SET @SelectQuery = @SelectQuery + ') VALUES' 
IF @IndividualInserts=0 SET @SelectQuery = @SelectQuery + ''''
SET @ResultQuery = @ResultQuery + ')'' FROM ' + @TableName + ';'

SET @SQL = @SelectQuery + @ResultQuery

--SELECT @SelectQuery
--SELECT @ResultQuery

--SELECT @SQL

--PRINT @SelectQuery 
--PRINT @ResultQuery
EXEC sp_executesql @SQL