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Fix mssql issue with duplicate columns. 

The `GetColumns()` method for the mssql dialect can return the same
column multiple times if the column is in multiple indexes.
This commit is contained in:
Robert G. Jakabosky 2019-02-12 15:32:12 +08:00
parent 1bcc25420d
commit db0e2ef052
1 changed files with 6 additions and 5 deletions
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11
dialect_mssql.go
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@ -340,14 +340,15 @@ func (db *mssql) GetColumns(tableName string) ([]string, map[string]*core.Column
args := []interface{}{} args := []interface{}{}
s := `select a.name as name, b.name as ctype,a.max_length,a.precision,a.scale,a.is_nullable as nullable, s := `select a.name as name, b.name as ctype,a.max_length,a.precision,a.scale,a.is_nullable as nullable,
replace(replace(isnull(c.text,''),'(',''),')','') as vdefault, replace(replace(isnull(c.text,''),'(',''),')','') as vdefault,
ISNULL(i.is_primary_key, 0) ISNULL(p.is_primary_key, 0)
from sys.columns a from sys.columns a
left join sys.types b on a.user_type_id=b.user_type_id left join sys.types b on a.user_type_id=b.user_type_id
left join sys.syscomments c on a.default_object_id=c.id left join sys.syscomments c on a.default_object_id=c.id
LEFT OUTER JOIN LEFT OUTER JOIN (SELECT i.object_id, ic.column_id, i.is_primary_key
sys.index_columns ic ON ic.object_id = a.object_id AND ic.column_id = a.column_id FROM sys.indexes i
LEFT OUTER JOIN LEFT JOIN sys.index_columns ic ON ic.object_id = i.object_id AND ic.index_id = i.index_id
sys.indexes i ON ic.object_id = i.object_id AND ic.index_id = i.index_id WHERE i.is_primary_key = 1
) as p on p.object_id = a.object_id AND p.column_id = a.column_id
where a.object_id=object_id('` + tableName + `')` where a.object_id=object_id('` + tableName + `')`
db.LogSQL(s, args) db.LogSQL(s, args)