Question

我试图在SQL表中找到特定键的所有实例。该值为数字。

使用以下脚本时出现此错误：

将数据类型numeric转换为varchar
时出错

脚本

DECLARE @SearchStr varchar(100)
SET @SearchStr = '6836755'

CREATE TABLE #Results (ColumnName nvarchar(370), ColumnValue nvarchar(3630))

SET NOCOUNT ON

DECLARE @TableName nvarchar(256), @ColumnName nvarchar(128), @SearchStr2 nvarchar(110)
SET  @TableName = ''
SET @SearchStr2 = @SearchStr--QUOTENAME('%' + @SearchStr + '%','''')

WHILE @TableName IS NOT NULL
BEGIN
    SET @ColumnName = ''
    SET @TableName =
    (
        SELECT MIN(QUOTENAME(TABLE_SCHEMA) + '.' + QUOTENAME(TABLE_NAME))
        FROM INFORMATION_SCHEMA.TABLES
        WHERE TABLE_TYPE = 'BASE TABLE'
          AND QUOTENAME(TABLE_SCHEMA) + '.' + QUOTENAME(TABLE_NAME) > @TableName
          AND OBJECTPROPERTY(
                    OBJECT_ID(
                        QUOTENAME(TABLE_SCHEMA) + '.' + QUOTENAME(TABLE_NAME)
                         ), 'IsMSShipped'
                           ) = 0
    )

    WHILE (@TableName IS NOT NULL) AND (@ColumnName IS NOT NULL)
    BEGIN
        SET @ColumnName =
        (
            SELECT MIN(QUOTENAME(COLUMN_NAME))
            FROM INFORMATION_SCHEMA.COLUMNS
            WHERE TABLE_SCHEMA = PARSENAME(@TableName, 2)
              AND TABLE_NAME = PARSENAME(@TableName, 1)
              AND DATA_TYPE IN ('char', 'varchar', 'nchar', 'nvarchar', 'int', 'decimal')
              AND QUOTENAME(COLUMN_NAME) > @ColumnName)

        IF @ColumnName IS NOT NULL
        BEGIN
            INSERT INTO #Results
            EXEC
            (
                'SELECT ''' + @TableName + '.' + @ColumnName + ''', LEFT(' + @ColumnName + ', 3630) FROM ' + @TableName + ' (NOLOCK) ' +
                ' WHERE ' + @ColumnName + ' LIKE ' + @SearchStr2
            )
        END
    END   
END

SELECT ColumnName, ColumnValue FROM #Results

DROP TABLE #Results

这适用于文本值。我要么需要一种方法来修改它，以便它搜索数字，或者如果它更容易，则一种方法来识别给定FK存在的每个表。

Answer 1

玩弄：

SELECT KU.table_name as TABLENAME,column_name as PRIMARYKEYCOLUMN, *
FROM INFORMATION_SCHEMA.TABLE_CONSTRAINTS AS TC
INNER JOIN
    INFORMATION_SCHEMA.KEY_COLUMN_USAGE AS KU
          ON TC.CONSTRAINT_TYPE = 'PRIMARY KEY' AND
             TC.CONSTRAINT_NAME = KU.CONSTRAINT_NAME
ORDER BY KU.TABLE_NAME, KU.ORDINAL_POSITION;

略微修改自：SQL Server: Get table primary key using sql query

在所有数据库表中搜索PK或FK

1 个答案: