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 AzureActiveDirectory adapter:

SELECT {
  [ TOP <numeric_literal> | DISTINCT ]
  { 
    * 
    | { 
        <expression> [ [ AS ] <column_reference> ] 
        | { <table_name> | <correlation_name> } .* 
      } [ , ... ] 
  }
  { 
    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> { = | > | < | >= | <= | <> | != | LIKE | NOT LIKE | IS NULL | IS NOT NULL | AND | OR } [ <expression> ]
    } [ { AND | OR } ... ]

Examples

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

Rename a column:

SELECT "displayName" AS MY_displayName FROM DirectoryRoles

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

SELECT CAST(passwordValidityPeriodInDays AS VARCHAR) AS Str_passwordValidityPeriodInDays FROM DirectoryRoles

Search data:

SELECT * FROM DirectoryRoles WHERE Id = 'Jq74mCczmFXk1tC10GBs'

The AzureActiveDirectory APIs support the following operators in the WHERE clause: =, >, <, >=, <=, <>, !=, LIKE, NOT LIKE, IS NULL, IS NOT NULL, AND, OR.
```
SELECT * FROM DirectoryRoles WHERE Id = 'Jq74mCczmFXk1tC10GBs';
```
Return the number of items matching the query criteria:
```
SELECT COUNT(*) AS MyCount FROM DirectoryRoles 
```
Return the number of unique items matching the query criteria:
```
SELECT COUNT(DISTINCT displayName) FROM DirectoryRoles 
```
Return the unique items matching the query criteria:
```
SELECT DISTINCT displayName FROM DirectoryRoles 
```

Sort a result set in ascending order:

SELECT Id, displayName FROM DirectoryRoles  ORDER BY displayName 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

Date Literal Functions contains SELECT examples with date literal functions.

Window Functions

See Window Functions for SELECT examples containing window functions.

Table-Valued Functions

See Table-Valued Functions for SELECT examples with table-valued functions.

TDV Adapter for Azure Active Directory