SELECT DateTime, Skill, Name, TimeZone, ID, User, Employee, Leader
FROM t_Agent_Skill_Group_Half_Hour AS t
J'ai besoin de voir la structure de la table dans une requête.
Pour SQL Server, si vous utilisez une version plus récente, vous pouvez utiliser
select *
from INFORMATION_SCHEMA.COLUMNS
where TABLE_NAME='tableName'
Il y a différentes façons d'obtenir le schéma. En utilisant ADO.NET, vous pouvez utiliser les méthodes schema . Utilisez la méthode DbConnection
's GetSchema
ou DataReader
's GetSchemaTable
.
Si vous avez un lecteur pour la requête, vous pouvez faire quelque chose comme ceci:
using(DbCommand cmd = ...)
using(var reader = cmd.ExecuteReader())
{
var schema = reader.GetSchemaTable();
foreach(DataRow row in schema.Rows)
{
Debug.WriteLine(row["ColumnName"] + " - " + row["DataTypeName"])
}
}
Voir cet article pour plus de détails.
sp_help tablename
dans le serveur SQL
desc tablename
dans Oracle
Essayez cette requête:
DECLARE @table_name SYSNAME
SELECT @table_name = 'dbo.test_table'
DECLARE
@object_name SYSNAME
, @object_id INT
SELECT
@object_name = '[' + s.name + '].[' + o.name + ']'
, @object_id = o.[object_id]
FROM sys.objects o WITH (NOWAIT)
JOIN sys.schemas s WITH (NOWAIT) ON o.[schema_id] = s.[schema_id]
WHERE s.name + '.' + o.name = @table_name
AND o.[type] = 'U'
AND o.is_ms_shipped = 0
DECLARE @SQL NVARCHAR(MAX) = ''
;WITH index_column AS
(
SELECT
ic.[object_id]
, ic.index_id
, ic.is_descending_key
, ic.is_included_column
, c.name
FROM sys.index_columns ic WITH (NOWAIT)
JOIN sys.columns c WITH (NOWAIT) ON ic.[object_id] = c.[object_id] AND ic.column_id = c.column_id
WHERE ic.[object_id] = @object_id
)
SELECT @SQL = 'CREATE TABLE ' + @object_name + CHAR(13) + '(' + CHAR(13) + STUFF((
SELECT CHAR(9) + ', [' + c.name + '] ' +
CASE WHEN c.is_computed = 1
THEN 'AS ' + cc.[definition]
ELSE UPPER(tp.name) +
CASE WHEN tp.name IN ('varchar', 'char', 'varbinary', 'binary', 'text')
THEN '(' + CASE WHEN c.max_length = -1 THEN 'MAX' ELSE CAST(c.max_length AS VARCHAR(5)) END + ')'
WHEN tp.name IN ('nvarchar', 'nchar', 'ntext')
THEN '(' + CASE WHEN c.max_length = -1 THEN 'MAX' ELSE CAST(c.max_length / 2 AS VARCHAR(5)) END + ')'
WHEN tp.name IN ('datetime2', 'time2', 'datetimeoffset')
THEN '(' + CAST(c.scale AS VARCHAR(5)) + ')'
WHEN tp.name = 'decimal'
THEN '(' + CAST(c.[precision] AS VARCHAR(5)) + ',' + CAST(c.scale AS VARCHAR(5)) + ')'
ELSE ''
END +
CASE WHEN c.collation_name IS NOT NULL THEN ' COLLATE ' + c.collation_name ELSE '' END +
CASE WHEN c.is_nullable = 1 THEN ' NULL' ELSE ' NOT NULL' END +
CASE WHEN dc.[definition] IS NOT NULL THEN ' DEFAULT' + dc.[definition] ELSE '' END +
CASE WHEN ic.is_identity = 1 THEN ' IDENTITY(' + CAST(ISNULL(ic.seed_value, '0') AS CHAR(1)) + ',' + CAST(ISNULL(ic.increment_value, '1') AS CHAR(1)) + ')' ELSE '' END
END + CHAR(13)
FROM sys.columns c WITH (NOWAIT)
JOIN sys.types tp WITH (NOWAIT) ON c.user_type_id = tp.user_type_id
LEFT JOIN sys.computed_columns cc WITH (NOWAIT) ON c.[object_id] = cc.[object_id] AND c.column_id = cc.column_id
LEFT JOIN sys.default_constraints dc WITH (NOWAIT) ON c.default_object_id != 0 AND c.[object_id] = dc.parent_object_id AND c.column_id = dc.parent_column_id
LEFT JOIN sys.identity_columns ic WITH (NOWAIT) ON c.is_identity = 1 AND c.[object_id] = ic.[object_id] AND c.column_id = ic.column_id
WHERE c.[object_id] = @object_id
ORDER BY c.column_id
FOR XML PATH(''), TYPE).value('.', 'NVARCHAR(MAX)'), 1, 2, CHAR(9) + ' ')
+ ISNULL((SELECT CHAR(9) + ', CONSTRAINT [' + k.name + '] PRIMARY KEY (' +
(SELECT STUFF((
SELECT ', [' + c.name + '] ' + CASE WHEN ic.is_descending_key = 1 THEN 'DESC' ELSE 'ASC' END
FROM sys.index_columns ic WITH (NOWAIT)
JOIN sys.columns c WITH (NOWAIT) ON c.[object_id] = ic.[object_id] AND c.column_id = ic.column_id
WHERE ic.is_included_column = 0
AND ic.[object_id] = k.parent_object_id
AND ic.index_id = k.unique_index_id
FOR XML PATH(N''), TYPE).value('.', 'NVARCHAR(MAX)'), 1, 2, ''))
+ ')' + CHAR(13)
FROM sys.key_constraints k WITH (NOWAIT)
WHERE k.parent_object_id = @object_id
AND k.[type] = 'PK'), '') + ')' + CHAR(13)
PRINT @SQL
Sortie:
CREATE TABLE [dbo].[test_table]
(
[WorkOutID] BIGINT NOT NULL IDENTITY(1,1)
, [DateOut] DATETIME NOT NULL
, [EmployeeID] INT NOT NULL
, [IsMainWorkPlace] BIT NOT NULL DEFAULT((1))
, [WorkPlaceUID] UNIQUEIDENTIFIER NULL
, [WorkShiftCD] NVARCHAR(10) COLLATE Cyrillic_General_CI_AS NULL
, [CategoryID] INT NULL
, CONSTRAINT [PK_WorkOut] PRIMARY KEY ([WorkOutID] ASC)
)
Lisez aussi ceci:
Sur SQL Server 2012, vous pouvez utiliser la procédure stockée suivante:
sp_columns '<table name>'
Par exemple, étant donné une table de base de données nommée utilisateurs:
sp_columns 'users'
Pour imprimer un schéma, j'utilise jade et fais une exportation dans un fichier de la base de données puis je l'amène dans Word pour formater et imprimer