Question

This is my SQL:

DECLARE @tbl_WhereClause AS TABLE (
    SearchField VARCHAR(255),
    Operator VARCHAR(25),
    ConditionData VARCHAR(MAX),
    MatchCase BIT,
    TableName VARCHAR(MAX)   
)

DECLARE @WhereClause_XML XML
SET @WhereClause_XML = 
'<NewDataSet> 
  <param>
   <SearchField>EmployeeID</SearchField>
   <FilterCondition> >= </FilterCondition>
   <ConditionData>201</ConditionData>
   <MatchCase>0</MatchCase>
   <Table>Employee</Table>
 </param>
 <param>  
   <SearchField>DeptID</SearchField>
   <FilterCondition> = </FilterCondition>
   <ConditionData>AC01</ConditionData>
   <MatchCase>1</MatchCase>
   <Table>Department</Table>
 </param>
 <param>  
   <SearchField>Dob</SearchField>
   <FilterCondition> >= </FilterCondition>
   <ConditionData>20120104</ConditionData>
   <MatchCase>0</MatchCase>
   <Table>Employee</Table>
 </param>
</NewDataSet>'

INSERT INTO @tbl_WhereClause (SearchField, Operator, ConditionData,  MatchCase,TableName)
SELECT  A.B.value('(SearchField)[1]', 'VARCHAR(255)' ) SearchField,
    A.B.value('(FilterCondition)[1]', 'VARCHAR(25)' ) Operator,
    A.B.value('(ConditionData)[1]', 'VARCHAR(MAX)' ) ConditionData,
    A.B.value('(MatchCase)[1]', 'BIT' ) MatchCase,
    A.B.value('(Table)[1]', 'VARCHAR(MAX)' ) TableName
FROM    @WhereClause_XML.nodes('/NewDataSet/param') A(B)

SELECT * FROM @tbl_WhereClause

How can I join with the system table for each field to get the each field data type and show. please run the script and do the necessary changes in SQL. thanks

Answer 1

Try this to verify tables and columns, and to bring its types with their properties:

DECLARE @tbl_WhereClause AS TABLE (
SearchField VARCHAR(255),
Operator VARCHAR(25),
ConditionData VARCHAR(MAX),
MatchCase BIT,
TableName VARCHAR(MAX),
Validity VARCHAR(100),
ColumnType VARCHAR(128),
ColumnPrecision INT,
ColumnScale INT,
ColumnNullable bit
)

DECLARE @WhereClause_XML XML
SET @WhereClause_XML = '
<NewDataSet>
<param>
<SearchField>EmployeeID</SearchField>
<FilterCondition> >= </FilterCondition>
<ConditionData>201</ConditionData>
<MatchCase>0</MatchCase>
<Table>Employee</Table>
</param>
<param>  
<SearchField>DeptID</SearchField>
<FilterCondition> = </FilterCondition>
<ConditionData>AC01</ConditionData>
<MatchCase>1</MatchCase>
<Table>Department</Table>
</param>
<param>  
<SearchField>Dob</SearchField>
<FilterCondition> >= </FilterCondition>
<ConditionData>20120104</ConditionData>
<MatchCase>0</MatchCase>
<Table>Employee</Table>
</param>
</NewDataSet>'

INSERT INTO @tbl_WhereClause (SearchField, Operator, ConditionData,  MatchCase,TableName, Validity, ColumnType, ColumnPrecision, ColumnScale, ColumnNullable)
SELECT  A.B.value('(SearchField)[1]', 'VARCHAR(255)' ) SearchField,
    A.B.value('(FilterCondition)[1]', 'VARCHAR(25)' ) Operator,
    A.B.value('(ConditionData)[1]', 'VARCHAR(MAX)' ) ConditionData,
    A.B.value('(MatchCase)[1]', 'BIT' ) MatchCase,
    A.B.value('(Table)[1]', 'VARCHAR(MAX)' ) TableName,
    CASE WHEN t.NAME+c.NAME IS NULL THEN 'invalid' ELSE 'valid' END ,
    ty.NAME,
    c.PRECISION,
    c.Scale,
    c.Is_Nullable
FROM    @WhereClause_XML.nodes('/NewDataSet/param') A(B)
LEFT JOIN sys.tables t ON t.name = A.B.value('(Table)[1]', 'VARCHAR(MAX)' )
LEFT JOIN sys.COLUMNS c ON T.OBJECT_ID = c.OBJECT_ID AND c.name = A.B.value('(SearchField)[1]', 'VARCHAR(255)' )
LEFT JOIN sys.types ty ON c.system_type_id = ty.system_type_id 

SELECT * FROM @tbl_WhereClause