我有这个查询选择像CODE_这样的表。我想将这些结果连接到每个CODE表，如CODE_COUNTRY，CODE_COUNTY，以列出SHORT_DESC的值，它将是以下值：United States，Mexico for Country;布朗，绿色为县;男性，女性为性别*。 SHORT_DESC中的值与转换表PC_Column *中的值匹配。所以我需要加入Transformations表来查找匹配的列。并且左连接，右连接以显示与数据库不匹配的列。如何找到要连接到Transformations表的系统列？
SELECT tb.[schema_id] AS 'Schema'
,tb.[OBJECT_ID] AS 'TableObj'
,tb.[NAME] AS 'TableName'
,C.NAME as 'Column'
,T.name AS 'Type'
,C.max_length
,C.is_nullable
FROM
SYS.COLUMNS C
INNER JOIN
SYS.TABLES tb ON tb.[object_id] = C.[object_id]
INNER JOIN
SYS.TYPES T ON C.system_type_id = T.user_type_id
--INNER JOIN
-- Bridge_test.dbo.Transformations TF ON TF.PC_Column = C.NAME
WHERE
tb.[is_ms_shipped] = 0
AND tb.[NAME] LIKE '%code_%'
AND C.name = 'SHORT_DESC'
--C.NAME LIKE '%country%'
ORDER BY
tb.[Name]
*注意：这些是要添加到此查询的列
查询结果
Schema TableObj TableName Column Type max_length is_nullable *SHORT_DESC Value (from CODE_ table), *PC_Column (from Transformations table)
1 1826105546 CODE_COUNTRY SHORT_DESC nvarchar 20 0 United States, USA
1 2018106230 CODE_COUNTY SHORT_DESC nvarchar 20 0 Mexico, Mexico
例如，SHORT_DESC中的值应与PC_Column
匹配CODE_VALUE_KEY CODE_VALUE SHORT_DESC MEDIUM_DESC LONG_DESC STATUS
1001 1001 Autauga Autauga Autauga A
1003 1003 Baldwin Baldwin Baldwin A
1005 1005 Barbour Barbour Barbour A
1007 1007 Bibb Bibb Bibb A
1009 1009 Blount Blount Blount A
Transformations Table
GM_Column Value Note1 F4 PC_Table_Column PC_Table PC_Column Value1 Note2 F10
Ugender M NULL = demographics_gender demographics gender Male NULL NULL
Ugender F NULL = demographics_gender demographics gender Female NULL NULL
Ugender U NULL = demographics_gender demographics gender Unknown NULL NULL
Umarstat D NULL = demographics_marital_status demographics marital_status Divorced NULL NULL
Umarstat M NULL = demographics_marital_status demographics marital_status Married NULL NULL
Umarstat O NULL = demographics_marital_status demographics marital_status Other NULL NULL
Umarstat S NULL = demographics_marital_status demographics marital_status Single NULL NULL
系统表 - 查找系统表以查找包含用户数据的公共列，并且看不到要加入用户数据表的公共列
SELECT * FROM sys.tables WHERE name LIKE '%code%'
/*
name object_id principal_id schema_id parent_object_id type type_desc create_date modify_date is_ms_shipped is_published is_schema_published lob_data_space_id filestream_data_space_id max_column_id_used lock_on_bulk_load uses_ansi_nulls is_replicated has_replication_filter is_merge_published is_sync_tran_subscribed has_unchecked_assembly_data text_in_row_limit large_value_types_out_of_row is_tracked_by_cdc lock_escalation lock_escalation_desc
CODE_SOURCETYPE 5195785 NULL 1 0 U USER_TABLE 45:44.0 16:28.9 0 0 0 0 NULL 18 0 1 0 0 0 0 0 0 0 0 0 TABLE
CODE_CONTROLTYPE 8671795 NULL 1 0 U USER_TABLE 45:37.8 16:28.9 0 0 0 0 NULL 17 0 1 0 0 0 0 0 0 0 0 0 TABLE
CODE_SPONSORSTATUS 21195842 NULL 1 0 U USER_TABLE 45:44.1 16:29.0 0 0 0 0 NULL 19 0 1 0 0 0 0 0 0 0 0 0 TABLE
CODE_COUNTRY 24671852 NULL 1 0 U USER_TABLE 45:37.8 16:29.0 0 0 0 0 NULL 24 0 1 0 0 0 0 0 0 0 0 0 TABLE
CODE_SPONSORTYPE 37195899 NULL 1 0 U USER_TABLE 45:44.1 16:29.2 0 0 0 0 NULL 17 0 1 0 0 0 0 0 0 0 0 0 TABLE
CODE_COUNTY 40671909 NULL 1 0 U USER_TABLE 45:37.9 16:29.2 0 0 0 0 NULL 18 0 1 0 0 0 0 0 0 0 0 0 TABLE
CODE_STATE 53195956 NULL 1 0 U USER_TABLE 45:44.2 16:29.3 0 0 0 0 NULL 19 0 1 0 0 0 0 0 0 0 0 0 TABLE
CODE_CREDCARDTYPE 56671966 NULL 1 0 U USER_TABLE 45:38.0 16:29.3 0 0 0 0 NULL 17 0 1 0 0 0 0 0 0 0 0 0 TABLE
*/
SELECT * FROM sys.objects WHERE type = 'U' --user tables
/*
has table name
name object_id principal_id schema_id parent_object_id type type_desc create_date modify_date is_ms_shipped is_published is_schema_published
ADDRESSSCHEDULE 7671075 NULL 1 0 U USER_TABLE 03:10.6 03:14.2 0 0 0
ADVANCENAME 23671132 NULL 1 0 U USER_TABLE 03:10.7 03:10.7 0 0 0
COMBINEMAILING 55671246 NULL 1 0 U USER_TABLE 03:11.1 03:11.1 0 0 0
DEMOGRAPHICS 87671360 NULL 1 0 U USER_TABLE 03:11.4 03:11.4 0 0 0
*/
SELECT * FROM sys.columns
/*
has column name
object_id name column_id system_type_id user_type_id max_length precision scale collation_name is_nullable is_ansi_padded is_rowguidcol is_identity is_computed is_filestream is_replicated is_non_sql_subscribed is_merge_published is_dts_replicated is_xml_document xml_collection_id default_object_id rule_object_id is_sparse is_column_set
119671474 HONORS 10 231 231 12 0 0 SQL_Latin1_General_CP1_CI_AS 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0
119671474 TRANSCRIPT_DATE 11 61 61 8 23 3 NULL 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
119671474 CLASS_RANK 12 56 56 4 10 0 NULL 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
119671474 CLASS_SIZE 13 56 56 4 10 0 NULL 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
*/
SELECT * FROM sys.tables
/*
has table name
name object_id principal_id schema_id parent_object_id type type_desc create_date modify_date is_ms_shipped is_published is_schema_published lob_data_space_id filestream_data_space_id max_column_id_used lock_on_bulk_load uses_ansi_nulls is_replicated has_replication_filter is_merge_published is_sync_tran_subscribed has_unchecked_assembly_data text_in_row_limit large_value_types_out_of_row is_tracked_by_cdc lock_escalation lock_escalation_desc
ADDRESSSCHEDULE 7671075 NULL 1 0 U USER_TABLE 03:10.6 03:14.2 0 0 0 0 NULL 39 0 1 0 0 0 0 0 0 0 0 0 TABLE
ADVANCENAME 23671132 NULL 1 0 U USER_TABLE 03:10.7 03:10.7 0 0 0 0 NULL 18 0 1 0 0 0 0 0 0 0 0 0 TABLE
COMBINEMAILING 55671246 NULL 1 0 U USER_TABLE 03:11.1 03:11.1 0 0 0 0 NULL 16 0 1 0 0 0 0 0 0 0 0 0 TABLE
DEMOGRAPHICS 87671360 NULL 1 0 U USER_TABLE 03:11.4 03:11.4 0 0 0 0 NULL 31 0 1 0 0 0 0 0 0 0 0 0 TABLE
*/
SELECT * FROM sys.tables WHERE name LIKE '%code%'
SELECT * FROM systypes
/*
has column type
name xtype status xusertype length xprec xscale tdefault domain uid reserved collationid usertype variable allownulls type printfmt prec scale collation
text 35 0 35 16 0 0 0 0 4 0 872468488 19 0 1 35 NULL NULL NULL SQL_Latin1_General_CP1_CI_AS
uniqueidentifier 36 0 36 16 0 0 0 0 4 0 NULL 0 0 1 37 NULL 16 NULL NULL
date 40 0 40 3 10 0 0 0 4 0 NULL 0 0 1 0 NULL 10 0 NULL
time 41 0 41 5 16 7 0 0 4 0 NULL 0 0 1 0 NULL 16 7 NULL
datetime2 42 0 42 8 27 7 0 0 4 0 NULL 0 0 1 0 NULL 27 7 NULL
datetimeoffset 43 0 43 10 34 7 0 0 4 0 NULL 0 0 1 0 NULL 34 7 NULL
...
34 rows
*/
我正在使用SQL Server 2008 R2
我在工作表上发布了格式 https://docs.google.com/spreadsheets/d/1k3rubaSm0M4jXf5VKgk3DuS8QkuPwgzPZYJnsMJdQcI/edit?usp=sharing