Come si elenca la chiave primaria di una tabella di SQL Server?


106

Domanda semplice, come si elenca la chiave primaria di una tabella con T-SQL? So come ottenere gli indici su una tabella, ma non ricordo come ottenere il PK.

Risposte:


146
SELECT Col.Column_Name from 
    INFORMATION_SCHEMA.TABLE_CONSTRAINTS Tab, 
    INFORMATION_SCHEMA.CONSTRAINT_COLUMN_USAGE Col 
WHERE 
    Col.Constraint_Name = Tab.Constraint_Name
    AND Col.Table_Name = Tab.Table_Name
    AND Constraint_Type = 'PRIMARY KEY'
    AND Col.Table_Name = '<your table name>'

1
Cordiali saluti, questo non elenca necessariamente le colonne in ordine . Vedi questa risposta a una domanda simile se hai bisogno delle colonne nel loro ordine particolare: stackoverflow.com/a/3942921/18511
Kip

7
In realtà, credo che tu debba vincolare anche per Schema, giusto? Quindi, dovresti aggiungere anche "E COL.TABLE_SCHEMA = '<nome schema>'".
DavidStein

Se la query precedente restituisce 3 righe, a, be c, (in questo ordine) allora la mia tabella ha una chiave primario composito di abc?
Kevin Meredith

30

In genere si consiglia ora di utilizzare le sys.*viste INFORMATION_SCHEMAin SQL Server, quindi a meno che non si preveda di migrare i database, li userei. Ecco come lo faresti con le sys.*visualizzazioni:

SELECT 
    c.name AS column_name,
    i.name AS index_name,
    c.is_identity
FROM sys.indexes i
    inner join sys.index_columns ic  ON i.object_id = ic.object_id AND i.index_id = ic.index_id
    inner join sys.columns c ON ic.object_id = c.object_id AND c.column_id = ic.column_id
WHERE i.is_primary_key = 1
    and i.object_ID = OBJECT_ID('<schema>.<tablename>');

3
Per ordinare, aggiungi "ORDER BY ic.key_ordinal ASC" alla query
Ruud van de Beeten,

23

Questa è una soluzione che utilizza solo sys -tables.

Elenca tutte le chiavi primarie nel database. Restituisce lo schema, il nome della tabella, il nome della colonna e il corretto ordinamento delle colonne per ciascuna chiave primaria.

Se vuoi ottenere la chiave primaria per una tabella specifica, devi filtrare su SchemaNamee TableName.

IMHO, questa soluzione è molto generica e non utilizza stringhe letterali, quindi verrà eseguita su qualsiasi macchina.

select 
    s.name as SchemaName,
    t.name as TableName,
    tc.name as ColumnName,
    ic.key_ordinal as KeyOrderNr
from 
    sys.schemas s 
    inner join sys.tables t   on s.schema_id=t.schema_id
    inner join sys.indexes i  on t.object_id=i.object_id
    inner join sys.index_columns ic on i.object_id=ic.object_id 
                                   and i.index_id=ic.index_id
    inner join sys.columns tc on ic.object_id=tc.object_id 
                             and ic.column_id=tc.column_id
where i.is_primary_key=1 
order by t.name, ic.key_ordinal ;


6

Mi piace la tecnica INFORMATION_SCHEMA, ma un'altra che ho usato è: exec sp_pkeys 'table'


6

Se utilizzi MS SQL Server, puoi eseguire le seguenti operazioni:

--List all tables primary keys
select * from information_schema.table_constraints
where constraint_type = 'Primary Key'

Puoi anche filtrare sulla colonna nome_tabella se desideri una tabella specifica.


4
questo elenca solo la chiave, non elenca le colonne nella chiave
Kip

1
Questo è partito bene, ma deve essere unito a INFORMATION_SCHEMA.CONSTRAINT_COLUMN_USAGE come nella risposta di Guy Starbuck.
vivace

4

--Questa è un'altra versione modificata che è anche un esempio per la query correlata

SELECT TC.TABLE_NAME as [Table_name], TC.CONSTRAINT_NAME as [Primary_Key]
 FROM INFORMATION_SCHEMA.TABLE_CONSTRAINTS TC
 INNER JOIN INFORMATION_SCHEMA.CONSTRAINT_COLUMN_USAGE CCU
 ON TC.CONSTRAINT_NAME = CCU.CONSTRAINT_NAME
 WHERE TC.CONSTRAINT_TYPE = 'PRIMARY KEY' AND
 TC.TABLE_NAME IN
 (SELECT [NAME] AS [TABLE_NAME] FROM SYS.OBJECTS 
 WHERE TYPE = 'U')

3

Questo dovrebbe elencare tutti i vincoli (chiave primaria e chiavi esterne) e alla fine della query inserire il nome della tabella

/* CAST IS DONE , SO THAT OUTPUT INTEXT FILE REMAINS WITH SCREEN LIMIT*/
WITH   ALL_KEYS_IN_TABLE (CONSTRAINT_NAME,CONSTRAINT_TYPE,PARENT_TABLE_NAME,PARENT_COL_NAME,PARENT_COL_NAME_DATA_TYPE,REFERENCE_TABLE_NAME,REFERENCE_COL_NAME) 
AS
(
SELECT  CONSTRAINT_NAME= CAST (PKnUKEY.name AS VARCHAR(30)) ,
        CONSTRAINT_TYPE=CAST (PKnUKEY.type_desc AS VARCHAR(30)) ,
        PARENT_TABLE_NAME=CAST (PKnUTable.name AS VARCHAR(30)) ,
        PARENT_COL_NAME=CAST ( PKnUKEYCol.name AS VARCHAR(30)) ,
        PARENT_COL_NAME_DATA_TYPE=  oParentColDtl.DATA_TYPE,        
        REFERENCE_TABLE_NAME='' ,
        REFERENCE_COL_NAME='' 

FROM sys.key_constraints as PKnUKEY
    INNER JOIN sys.tables as PKnUTable
            ON PKnUTable.object_id = PKnUKEY.parent_object_id
    INNER JOIN sys.index_columns as PKnUColIdx
            ON PKnUColIdx.object_id = PKnUTable.object_id
            AND PKnUColIdx.index_id = PKnUKEY.unique_index_id
    INNER JOIN sys.columns as PKnUKEYCol
            ON PKnUKEYCol.object_id = PKnUTable.object_id
            AND PKnUKEYCol.column_id = PKnUColIdx.column_id
     INNER JOIN INFORMATION_SCHEMA.COLUMNS oParentColDtl
            ON oParentColDtl.TABLE_NAME=PKnUTable.name
            AND oParentColDtl.COLUMN_NAME=PKnUKEYCol.name
UNION ALL
SELECT  CONSTRAINT_NAME= CAST (oConstraint.name AS VARCHAR(30)) ,
        CONSTRAINT_TYPE='FK',
        PARENT_TABLE_NAME=CAST (oParent.name AS VARCHAR(30)) ,
        PARENT_COL_NAME=CAST ( oParentCol.name AS VARCHAR(30)) ,
        PARENT_COL_NAME_DATA_TYPE= oParentColDtl.DATA_TYPE,     
        REFERENCE_TABLE_NAME=CAST ( oReference.name AS VARCHAR(30)) ,
        REFERENCE_COL_NAME=CAST (oReferenceCol.name AS VARCHAR(30)) 
FROM sys.foreign_key_columns FKC
    INNER JOIN sys.sysobjects oConstraint
            ON FKC.constraint_object_id=oConstraint.id 
    INNER JOIN sys.sysobjects oParent
            ON FKC.parent_object_id=oParent.id
    INNER JOIN sys.all_columns oParentCol
            ON FKC.parent_object_id=oParentCol.object_id /* ID of the object to which this column belongs.*/
            AND FKC.parent_column_id=oParentCol.column_id/* ID of the column. Is unique within the object.Column IDs might not be sequential.*/
    INNER JOIN sys.sysobjects oReference
            ON FKC.referenced_object_id=oReference.id
    INNER JOIN INFORMATION_SCHEMA.COLUMNS oParentColDtl
            ON oParentColDtl.TABLE_NAME=oParent.name
            AND oParentColDtl.COLUMN_NAME=oParentCol.name
    INNER JOIN sys.all_columns oReferenceCol
            ON FKC.referenced_object_id=oReferenceCol.object_id /* ID of the object to which this column belongs.*/
            AND FKC.referenced_column_id=oReferenceCol.column_id/* ID of the column. Is unique within the object.Column IDs might not be sequential.*/

)

select * from   ALL_KEYS_IN_TABLE
where   
    PARENT_TABLE_NAME  in ('YOUR_TABLE_NAME') 
    or REFERENCE_TABLE_NAME  in ('YOUR_TABLE_NAME')
ORDER BY PARENT_TABLE_NAME,CONSTRAINT_NAME;

Per riferimento, leggere attraverso - http://blogs.msdn.com/b/sqltips/archive/2005/09/16/469136.aspx


2
SELECT t.name AS 'table', i.name AS 'index', it.xtype,

(SELECT c.name FROM syscolumns c INNER JOIN sysindexkeys k 
    ON k.indid = i.indid 
        AND c.colid = k.colid 
        AND c.id = t.id 
        AND k.keyno = 1 
        AND k.id = t.id)
    AS 'column1',

(SELECT c.name FROM syscolumns c INNER JOIN sysindexkeys k 
    ON k.indid = i.indid 
        AND c.colid = k.colid 
        AND c.id = t.id 
        AND k.keyno = 2 
        AND k.id = t.id)
    AS 'column2',

(SELECT c.name FROM syscolumns c INNER JOIN sysindexkeys k 
    ON k.indid = i.indid 
        AND c.colid = k.colid 
        AND c.id = t.id 
        AND k.keyno = 3
        AND k.id = t.id)
    AS 'column3',

(SELECT c.name FROM syscolumns c INNER JOIN sysindexkeys k 
    ON k.indid = i.indid 
        AND c.colid = k.colid 
        AND c.id = t.id 
        AND k.keyno = 4
        AND k.id = t.id)
    AS 'column4',

(SELECT c.name FROM syscolumns c INNER JOIN sysindexkeys k 
    ON k.indid = i.indid 
        AND c.colid = k.colid 
        AND c.id = t.id 
        AND k.keyno = 5
        AND k.id = t.id)
    AS 'column5',

(SELECT c.name FROM syscolumns c INNER JOIN sysindexkeys k 
    ON k.indid = i.indid 
        AND c.colid = k.colid 
        AND c.id = t.id 
        AND k.keyno = 6
        AND k.id = t.id)
    AS 'column6',

(SELECT c.name FROM syscolumns c INNER JOIN sysindexkeys k 
    ON k.indid = i.indid 
        AND c.colid = k.colid 
        AND c.id = t.id 
        AND k.keyno = 7
        AND k.id = t.id)
    AS 'column7',

(SELECT c.name FROM syscolumns c INNER JOIN sysindexkeys k 
    ON k.indid = i.indid 
        AND c.colid = k.colid 
        AND c.id = t.id 
        AND k.keyno = 8 
        AND k.id = t.id)
    AS 'column8',

(SELECT c.name FROM syscolumns c INNER JOIN sysindexkeys k 
    ON k.indid = i.indid 
        AND c.colid = k.colid 
        AND c.id = t.id 
        AND k.keyno = 9 
        AND k.id = t.id)
    AS 'column9',

(SELECT c.name FROM syscolumns c INNER JOIN sysindexkeys k 
    ON k.indid = i.indid 
        AND c.colid = k.colid 
        AND c.id = t.id 
        AND k.keyno = 10
        AND k.id = t.id)
    AS 'column10',

FROM sysobjects t
    INNER JOIN sysindexes i ON i.id = t.id 
    INNER JOIN sysobjects it ON it.parent_obj = t.id AND it.name = i.name

WHERE it.xtype = 'PK'
ORDER BY t.name, i.name

Per qualche motivo ricevo un errore nelle sottoquery che restituiscono più valori. Ho provato a commentare ciascuna delle sottoquery per vedere se riuscivo a individuarla, ma sembrano fallire tutte sulla stessa tabella, che ha un solo campo nel suo indice. Qualche idea sul perché questo sarebbe accaduto?
Marshall

Ho scoperto che il problema era quando veniva elencata una funzione di tabella. Non sono sicuro del perché, ma il conteggio del campo per una colonna (cioè la colonna1) era 2. La mia soluzione è stata quella di cambiare la clausola WHERE finale in "WHERE it.xtype = 'PK' AND t. [Type] = 'U'".
Marshall

L'ho anche adorabile usando la funzione isnull su ciascuna colonna selezionata per evitare di vedere "NULL" nel mio set di risultati. Ad esempio:, ISNULL ((SELECT c.name FROM syscolumns c INNER JOIN sysindexkeys k ON k.indid = i.indid AND c.colid = k.colid AND c.id = t.id AND k.keyno = 1 AND k .id = t.id), '') AS 'column1'
Marshall

1

Grazie ragazzo.

Con una leggera variazione l'ho usato per trovare tutte le chiavi primarie per tutte le tabelle.

SELECT A.Name,Col.Column_Name from 
    INFORMATION_SCHEMA.TABLE_CONSTRAINTS Tab, 
    INFORMATION_SCHEMA.CONSTRAINT_COLUMN_USAGE Col ,
    (select NAME from dbo.sysobjects where xtype='u') AS A
WHERE 
    Col.Constraint_Name = Tab.Constraint_Name
    AND Col.Table_Name = Tab.Table_Name
    AND Constraint_Type = 'PRIMARY KEY '
    AND Col.Table_Name = A.Name

1
SELECT A.TABLE_NAME as [Table_name], A.CONSTRAINT_NAME as [Primary_Key]
 FROM INFORMATION_SCHEMA.TABLE_CONSTRAINTS A, INFORMATION_SCHEMA.CONSTRAINT_COLUMN_USAGE B
 WHERE CONSTRAINT_TYPE = 'PRIMARY KEY' AND A.CONSTRAINT_NAME = B.CONSTRAINT_NAME

1

Questo ti dà le colonne che sono PK.

SELECT COLUMN_NAME FROM INFORMATION_SCHEMA.KEY_COLUMN_USAGE WHERE TABLE_NAME = 'TableName'

1

La procedura memorizzata di sistema sp_helpfornirà le informazioni. Eseguire la seguente istruzione:

execute sp_help table_name

1

La query di seguito elencherà le chiavi primarie di una determinata tabella :

SELECT DISTINCT
    CONSTRAINT_NAME AS [Constraint],
    TABLE_SCHEMA AS [Schema],
    TABLE_NAME AS TableName
FROM
    INFORMATION_SCHEMA.KEY_COLUMN_USAGE
WHERE
    TABLE_NAME = 'mytablename'

1

Sto raccontando una semplice Technic che seguo

SP_HELP 'table_name'

eseguire questo codice come query. Menziona il nome della tua tabella al posto di table_name di cui vuoi conoscere la chiave primaria (non dimenticare le virgolette singole). Il risultato verrà visualizzato come immagine allegata. Spero che ti possa aiutare

inserisci qui la descrizione dell'immagine


Assicurati di racchiudere il nome della tua tabella tra virgolette singole o il comando non funzionerà!
Shadoninja

1

Per un elenco separato da virgole di colonne chiave primaria per un determinato TableName e Schema:

Select distinct SUBSTRING ( stuff(( select distinct ',' + [COLUMN_NAME] 
                                    from INFORMATION_SCHEMA.KEY_COLUMN_USAGE  
                                    where OBJECTPROPERTY(OBJECT_ID(CONSTRAINT_SCHEMA + '.' + QUOTENAME(CONSTRAINT_NAME)), 'IsPrimaryKey') = 1  
                                    AND TABLE_NAME = 'TableName' AND TABLE_SCHEMA = 'Schema'  
                                    order by 1 FOR XML PATH(''), TYPE).value('.', 'NVARCHAR(MAX)'),1,0,'' ) 
                            ,2,9999) 

0

Provalo:

SELECT
    CONSTRAINT_CATALOG AS DataBaseName,
    CONSTRAINT_SCHEMA AS SchemaName,
    TABLE_NAME AS TableName,
    CONSTRAINT_Name AS PrimaryKey
FROM INFORMATION_SCHEMA.TABLE_CONSTRAINTS 
WHERE CONSTRAINT_TYPE = 'Primary Key' and Table_Name = 'YourTable'

0

Questa versione mostra lo schema, il nome della tabella e un elenco di chiavi primarie ordinato e separato da virgole. Object_Id () non funziona per i server di collegamento, quindi filtriamo in base al nome della tabella.

Senza REPLACE (Si1.Column_Name, '', '') mostrerebbe i tag xml di apertura e chiusura per Column_Name sul database su cui stavo testando. Non sono sicuro del motivo per cui il database ha richiesto una sostituzione per "Column_Name", quindi se qualcuno lo sa, per favore commenta.

DECLARE @TableName VARCHAR(100) = '';
WITH Sysinfo
    AS (SELECT Kcu.Table_Name
            , Kcu.Table_Schema AS Schema_Name
            , Kcu.Column_Name
            , Kcu.Ordinal_Position
        FROM   [LinkServer].Information_Schema.Key_Column_Usage Kcu
             JOIN [LinkServer].Information_Schema.Table_Constraints AS Tc ON Tc.Constraint_Name = Kcu.Constraint_Name
        WHERE  Tc.Constraint_Type = 'Primary Key')
    SELECT           Schema_Name
                    ,Table_Name
                    , STUFF(
                          (
                             SELECT ', '
                                 , REPLACE(Si1.Column_Name, '', '')
                             FROM    Sysinfo Si1
                             WHERE  Si1.Table_Name = Si2.Table_Name
                             ORDER BY Si1.Table_Name
                                   , Si1.Ordinal_Position
                             FOR XML PATH('')
                          ), 1, 2, '') AS Primary_Keys
    FROM Sysinfo Si2
    WHERE Table_Name = CASE
                       WHEN @TableName NOT IN( '', 'All')
                       THEN @TableName
                       ELSE Table_Name
                    END
    GROUP BY Si2.Table_Name, Si2.Schema_Name;

E lo stesso modello usando la query di George:

DECLARE @TableName VARCHAR(100) = '';
WITH Sysinfo
    AS (SELECT S.Name AS Schema_Name
            , T.Name AS Table_Name
            , Tc.Name AS Column_Name
            , Ic.Key_Ordinal AS Ordinal_Position
        FROM   [LinkServer].Sys.Schemas S
             JOIN [LinkServer].Sys.Tables T ON S.Schema_Id = T.Schema_Id
             JOIN [LinkServer].Sys.Indexes I ON T.Object_Id = I.Object_Id
             JOIN [LinkServer].Sys.Index_Columns Ic ON I.Object_Id = Ic.Object_Id
                                                       AND I.Index_Id = Ic.Index_Id
             JOIN [LinkServer].Sys.Columns Tc ON Ic.Object_Id = Tc.Object_Id
                                                  AND Ic.Column_Id = Tc.Column_Id
        WHERE  I.Is_Primary_Key = 1)
    SELECT           Schema_Name
                    ,Table_Name
                    , STUFF(
                          (
                             SELECT ', '
                                 , REPLACE(Si1.Column_Name, '', '')
                             FROM    Sysinfo Si1
                             WHERE  Si1.Table_Name = Si2.Table_Name
                             ORDER BY Si1.Table_Name
                                   , Si1.Ordinal_Position
                             FOR XML PATH('')
                          ), 1, 2, '') AS Primary_Keys
    FROM Sysinfo Si2
    WHERE Table_Name = CASE
                       WHEN @TableName NOT IN('', 'All')
                       THEN @TableName
                       ELSE Table_Name
                    END
    GROUP BY Si2.Table_Name, Si2.Schema_Name;

0

L'ho trovato utile, fornisce un elenco di tabelle con un elenco separato da virgole delle colonne e poi anche un elenco separato da virgole di quali sono la chiave primaria

SELECT T.TABLE_SCHEMA, T.TABLE_NAME, 
STUFF((
    SELECT ', ' + C.COLUMN_NAME
    FROM INFORMATION_SCHEMA.COLUMNS C
        WHERE C.TABLE_SCHEMA = T.TABLE_SCHEMA
        AND T.TABLE_NAME = C.TABLE_NAME
        FOR XML PATH ('')
    ), 1, 2, '') AS Columns,
STUFF((
SELECT ', ' + C.COLUMN_NAME 
FROM INFORMATION_SCHEMA.CONSTRAINT_COLUMN_USAGE C
INNER JOIN INFORMATION_SCHEMA.TABLE_CONSTRAINTS TC
    ON C.TABLE_SCHEMA = TC.TABLE_SCHEMA
    AND C.TABLE_NAME = TC.TABLE_NAME
    WHERE C.TABLE_SCHEMA = T.TABLE_SCHEMA
    AND T.TABLE_NAME = C.TABLE_NAME
    AND TC.CONSTRAINT_TYPE = 'PRIMARY KEY'
    FOR XML PATH ('')
), 1, 2, '') AS [Key]
FROM INFORMATION_SCHEMA.TABLES T
ORDER BY T.TABLE_SCHEMA, T.TABLE_NAME

Qualcosa di simile (?): Seleziona SUBSTRING (elementi ((seleziona distinti "," + [COLUMN_NAME] da INFORMATION_SCHEMA.KEY_COLUMN_USAGE dove OBJECTPROPERTY (OBJECT_ID (CONSTRAINT_SCHEMA + "." + QUOTENAME (CONSTRAINT_NAME)), "IsPrimaryKey") = 1 AND TABLE_NAME = 'TableName' AND TABLE_SCHEMA = 'Schema' order by 1 FOR XML PATH (''), TYPE) .value ('.', 'NVARCHAR (MAX)'), 1,0, ''), 2, 9999)
Allan F

0

La tabella Sys.Objects contiene una riga per ogni oggetto con ambito schema definito dall'utente.

I vincoli creati come la chiave primaria o altri saranno l' oggetto e il nome della tabella sarà parent_object

Interroga sys.Objects e raccogli gli ID dell'oggetto di tipo richiesto

declare @TableName nvarchar(50)='TblInvoice' -- your table name
declare @TypeOfKey nvarchar(50)='PK' -- For Primary key

SELECT Name FROM sys.objects
WHERE type = @TypeOfKey 
AND  parent_object_id = OBJECT_ID (@TableName)

0

Posso suggerire una risposta semplice e più accurata alla domanda originale di seguito

SELECT 
KEYS.table_schema, KEYS.table_name, KEYS.column_name, KEYS.ORDINAL_POSITION 
FROM INFORMATION_SCHEMA.KEY_COLUMN_USAGE keys
INNER JOIN INFORMATION_SCHEMA.TABLE_CONSTRAINTS CONS 
    ON cons.TABLE_SCHEMA = keys.TABLE_SCHEMA 
    AND cons.TABLE_NAME = keys.TABLE_NAME 
    AND cons.CONSTRAINT_NAME = keys.CONSTRAINT_NAME
WHERE cons.CONSTRAINT_TYPE = 'PRIMARY KEY'

Appunti:

  1. Ad alcune delle risposte precedenti manca un filtro solo per le colonne della chiave primaria!
  2. Sto usando di seguito in una CTE per unirmi a un elenco di colonne più grande per fornire i metadati da una fonte per alimentare la generazione BIML di tabelle di staging e codice SSIS

0

Potrebbe essere pubblicato di recente, ma si spera che questo aiuti qualcuno a vedere l'elenco delle chiavi primarie nel server sql utilizzando questa query t-sql:

SELECT  schema_name(t.schema_id) AS [schema_name], t.name AS TableName,        
    COL_NAME(ic.OBJECT_ID,ic.column_id) AS PrimaryKeyColumnName,
    i.name AS PrimaryKeyConstraintName
FROM    sys.tables t 
INNER JOIN sys.indexes AS i  on t.object_id=i.object_id 
INNER JOIN  sys.index_columns AS ic ON  i.OBJECT_ID = ic.OBJECT_ID
                            AND i.index_id = ic.index_id 
WHERE OBJECT_NAME(ic.OBJECT_ID) = 'YourTableNameHere'

Puoi vedere l'elenco di tutte le chiavi esterne utilizzando questa query se desideri:

SELECT
f.name as ForeignKeyConstraintName
,OBJECT_NAME(f.parent_object_id) AS ReferencingTableName
,COL_NAME(fc.parent_object_id, fc.parent_column_id) AS ReferencingColumnName
,OBJECT_NAME (f.referenced_object_id) AS ReferencedTableName
,COL_NAME(fc.referenced_object_id, fc.referenced_column_id) AS 
 ReferencedColumnName  ,delete_referential_action_desc AS 
DeleteReferentialActionDesc ,update_referential_action_desc AS 
UpdateReferentialActionDesc
FROM sys.foreign_keys AS f
INNER JOIN sys.foreign_key_columns AS fc
ON f.object_id = fc.constraint_object_id
 --WHERE OBJECT_NAME(f.parent_object_id) = 'YourTableNameHere' 
 --If you want to know referecing table details 
 WHERE OBJECT_NAME(f.referenced_object_id) = 'YourTableNameHere' 
 --If you want to know refereced table details 
ORDER BY f.name

0

L'ho trovato da un mio amico, molto efficace se stai cercando tutte le chiavi primarie della tabella in uno schema particolare.

SELECT tc.constraint_name AS IndexName,tc.table_name AS TableName,tc.table_schema
AS SchemaName,kc.column_name AS COLUMN_NAME
FROM information_schema.table_constraints tc,information_schema.key_column_usage kc
WHERE tc.constraint_type = 'PRIMARY KEY' AND kc.table_name = tc.table_name AND kc.table_schema = tc.table_schema
AND kc.constraint_name = tc.constraint_name AND tc.table_schema='<SCHEMA_NAME>'

0

Se stai cercando di creare il tuo ORM o generare codice da una determinata tabella, questo potrebbe essere ciò che stai cercando:

declare @table varchar(100) = 'mytable';

with cte as
(
    select 
        tc.CONSTRAINT_SCHEMA
        , tc.CONSTRAINT_TYPE
        , tc.TABLE_NAME
        , ccu.COLUMN_NAME
        , IS_NULLABLE
        , DATA_TYPE
        , CHARACTER_MAXIMUM_LENGTH
        , NUMERIC_PRECISION
    from 
        INFORMATION_SCHEMA.TABLE_CONSTRAINTS tc 
        inner join INFORMATION_SCHEMA.CONSTRAINT_COLUMN_USAGE ccu on tc.TABLE_NAME=ccu.TABLE_NAME  and tc.TABLE_SCHEMA=ccu.TABLE_SCHEMA
        inner join information_schema.COLUMNS c on ccu.COLUMN_NAME=c.COLUMN_NAME and ccu.TABLE_NAME=c.TABLE_NAME and ccu.TABLE_SCHEMA=c.TABLE_SCHEMA
    where 
        tc.table_name=@table
        and 
        ccu.CONSTRAINT_NAME=tc.CONSTRAINT_NAME
    union 
    select TABLE_SCHEMA,'COLUMN', TABLE_NAME, COLUMN_NAME, IS_NULLABLE, DATA_TYPE,CHARACTER_MAXIMUM_LENGTH, NUMERIC_PRECISION from INFORMATION_SCHEMA.COLUMNS where TABLE_NAME=@table
    and COLUMN_NAME not in (select COLUMN_NAME from INFORMATION_SCHEMA.CONSTRAINT_COLUMN_USAGE where TABLE_NAME = @table)
)
select 
    cast(iif(CONSTRAINT_TYPE='PRIMARY KEY',1,0) as bit) PrimaryKey
    ,cast(iif(CONSTRAINT_TYPE='FOREIGN KEY',1,0) as bit) ForeignKey
    ,cast(iif(CONSTRAINT_TYPE='COLUMN',1,0) as bit) NotKey
    ,COLUMN_NAME
    ,cast(iif(is_nullable='NO',0,1) as bit) IsNullable
    , DATA_TYPE
    , CHARACTER_MAXIMUM_LENGTH
    , NUMERIC_PRECISION 
from 
    cte 
order by 
    case CONSTRAINT_TYPE 
        when 'PRIMARY KEY' then 1 
        when 'FOREIGN KEY' then 2 
        else 3 end
    , COLUMN_NAME

Ecco come sarebbe il risultato:

				<table cellspacing=0 border=1>
					<tr>
						<td style=min-width:50px>PrimaryKey</td>
						<td style=min-width:50px>ForeignKey</td>
						<td style=min-width:50px>NotKey</td>
						<td style=min-width:50px>COLUMN_NAME</td>
						<td style=min-width:50px>IsNullable</td>
						<td style=min-width:50px>DATA_TYPE</td>
						<td style=min-width:50px>CHARACTER_MAXIMUM_LENGTH</td>
						<td style=min-width:50px>NUMERIC_PRECISION</td>
					</tr>
					<tr>
						<td style=min-width:50px>1</td>
						<td style=min-width:50px>0</td>
						<td style=min-width:50px>0</td>
						<td style=min-width:50px>LectureNoteID</td>
						<td style=min-width:50px>0</td>
						<td style=min-width:50px>int</td>
						<td style=min-width:50px>NULL</td>
						<td style=min-width:50px>10</td>
					</tr>
					<tr>
						<td style=min-width:50px>0</td>
						<td style=min-width:50px>1</td>
						<td style=min-width:50px>0</td>
						<td style=min-width:50px>LectureId</td>
						<td style=min-width:50px>0</td>
						<td style=min-width:50px>int</td>
						<td style=min-width:50px>NULL</td>
						<td style=min-width:50px>10</td>
					</tr>
					<tr>
						<td style=min-width:50px>0</td>
						<td style=min-width:50px>1</td>
						<td style=min-width:50px>0</td>
						<td style=min-width:50px>NoteTypeID</td>
						<td style=min-width:50px>0</td>
						<td style=min-width:50px>int</td>
						<td style=min-width:50px>NULL</td>
						<td style=min-width:50px>10</td>
					</tr>
					<tr>
						<td style=min-width:50px>0</td>
						<td style=min-width:50px>0</td>
						<td style=min-width:50px>1</td>
						<td style=min-width:50px>Body</td>
						<td style=min-width:50px>0</td>
						<td style=min-width:50px>nvarchar</td>
						<td style=min-width:50px>-1</td>
						<td style=min-width:50px>NULL</td>
					</tr>
					<tr>
						<td style=min-width:50px>0</td>
						<td style=min-width:50px>0</td>
						<td style=min-width:50px>1</td>
						<td style=min-width:50px>DisplayOrder</td>
						<td style=min-width:50px>0</td>
						<td style=min-width:50px>int</td>
						<td style=min-width:50px>NULL</td>
						<td style=min-width:50px>10</td>
					</tr>
				</table>
				


0

Se la chiave primaria e il tipo sono necessari, questa query può essere utile:

SELECT L.TABLE_SCHEMA, L.TABLE_NAME, L.COLUMN_NAME, R.TypeName
FROM(
    SELECT COLUMN_NAME, TABLE_NAME, TABLE_SCHEMA
    FROM INFORMATION_SCHEMA.KEY_COLUMN_USAGE
    WHERE OBJECTPROPERTY(OBJECT_ID(CONSTRAINT_SCHEMA + '.' + QUOTENAME(CONSTRAINT_NAME)), 'IsPrimaryKey') = 1
)L
LEFT JOIN (
    SELECT
    OBJECT_NAME(c.OBJECT_ID) TableName ,c.name AS ColumnName ,t.name AS TypeName
    FROM sys.columns AS c
    JOIN sys.types AS t ON c.user_type_id=t.user_type_id
)R ON L.COLUMN_NAME = R.ColumnName AND L.TABLE_NAME = R.TableName
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