SELECT Statements

A SELECT statement can consist of the following basic clauses.

SELECT
INTO
FROM
JOIN
WHERE
GROUP BY
HAVING
UNION
ORDER BY
LIMIT

SELECT Syntax

The following syntax diagram outlines the syntax supported by the Tableau CRM adapter:

SELECT {
  [ TOP <numeric_literal> | DISTINCT ]
  { 
    * 
    | { 
        <expression> [ [ AS ] <column_reference> ] 
        | { <table_name> | <correlation_name> } .* 
      } [ , ... ] 
  }
  [ INTO csv:// [ filename= ] <file_path> [ ;delimiter=tab ] ]
  { 
    FROM <table_reference> [ [ AS ] <identifier> ] 
  } [ , ... ]
  [ 
    JOIN <table_reference> [ ON <search_condition> ] [ [ AS ] <identifier> ] 
  ] [ ... ] 
  [ WHERE <search_condition> ]
  [ GROUP BY <column_reference> [ , ... ]
  [ HAVING <search_condition> ]
  [ UNION  [ ALL ] <select_statement> ]
  [ 
    ORDER BY 
    <column_reference> [ ASC | DESC ] [ NULLS FIRST | NULLS LAST ]
  ]
  [
    LIMIT <expression>
    [ 
      { OFFSET | , }
      <expression> 
    ]
  ] 
} | SCOPE_IDENTITY() 

  <expression> ::=
    | <column_reference>
    | @ <parameter> 
    | ?
    | COUNT( * | { [ DISTINCT ] <expression> } )
    | { AVG | MAX | MIN | SUM | COUNT } ( <expression> ) 
    | NULLIF ( <expression> , <expression> ) 
    | COALESCE ( <expression> , ... ) 
    | CASE <expression>
        WHEN { <expression> | <search_condition> } THEN { <expression> | NULL } [ ... ]
    [ ELSE { <expression> | NULL } ]
      END 
    | <literal>
    | <sql_function> 

  <search_condition> ::= 
    {
      <expression> { = | > | != | < | AND | OR | IN | NOT IN | LIKE | IS NULL | IS NOT NULL } [ <expression> ]
    } [ { AND | OR } ... ]

Examples

Return all columns:
```
SELECT * FROM Dataset_Opportunity
```

Rename a column:

SELECT "CloseDate" AS MY_CloseDate FROM Dataset_Opportunity

Cast a column's data as a different data type:

SELECT CAST(Size AS VARCHAR) AS Str_Size FROM Dataset_Opportunity

Search data:

SELECT * FROM Dataset_Opportunity WHERE StageName = 'Closed Won'

The Tableau CRM APIs support the following operators in the WHERE clause: =, >, !=, <, AND, OR, IN, NOT IN, LIKE, IS NULL, IS NOT NULL.
```
SELECT * FROM Dataset_Opportunity WHERE StageName = 'Closed Won';
```
Return the number of items matching the query criteria:
```
SELECT COUNT(*) AS MyCount FROM Dataset_Opportunity 
```
Return the number of unique items matching the query criteria:
```
SELECT COUNT(DISTINCT CloseDate) FROM Dataset_Opportunity 
```

Return the unique items matching the query criteria:

SELECT DISTINCT CloseDate FROM Dataset_Opportunity

Sort a result set in ascending order:

SELECT Name, CloseDate FROM Dataset_Opportunity  ORDER BY CloseDate ASC

Aggregate Functions

For SELECT examples using aggregate functions, see Aggregate Functions.

JOIN Queries

See JOIN Queries for SELECT query examples using JOINs.

Date Literal Functions