From keyword not found where expected oracle ошибка - ErrorsMaster.ru - большая энциклопедия ошибок и их решений

    select 
      country_olympic_name, 
      SUM(part_gold) as 'Number of Gold Medals'
    From
      games.country,
      games.participation
   where
      participation.country_isocode = country.country_isocode
   group by
      country_olympic_name;

I have been getting the error ORA-00923: FROM keyword not found where expected and do not know why, please help

asked Sep 16, 2013 at 14:34

Identifiers need to be quoted with double quotes ("). Single quotes (') denote a character value (not a «name»).

Therefor you need to use:

SUM(part_gold) as "Number of Gold Medals"

More details in the manual:

Database Object Names and Qualifiers
Text literals

answered Sep 16, 2013 at 14:35

Add comma after SELECT QUERY

In my case, I had this query

SELECT BANK_NAME
DECODE (SWIFT_CODE, 'BRDEROBU', 'BRD',
                   'NO RESULT') RESULT
FROM BANK_GAR;

As you may see, I didn’t had the comma after the SELECT BANK_NAME line.

The correct query is:

SELECT BANK_NAME,
DECODE (SWIFT_CODE, 'BRDEROBU', 'BRD',
                   'NO RESULT') RESULT
FROM BANK_GAR;

answered Jun 23, 2020 at 20:21

Gabriel ArghireGabriel Arghire

1,8931 gold badge19 silver badges34 bronze badges

Check reserved words. This was my issue. For whatever reason using «size» as a column alias caused oracle to spit that exact error out and it had me scratching my head for a while.

select 1 size, 1 id from dual

answered Dec 12, 2020 at 2:04

You may try doing this:-

select 
  country_olympic_name, 
  SUM(part_gold) as "Number of Gold Medals"
From
  games.country,
  games.participation
where
  participation.country_isocode = country.country_isocode
group by
  country_olympic_name;

answered Sep 16, 2013 at 14:37

Rahul TripathiRahul Tripathi

167k31 gold badges277 silver badges331 bronze badges

Try this…

SELECT
      COUNTRY_OLYMPIC_NAME,
      SUM ( PART_GOLD ) AS NUMBER_OF_GOLD_MEDALS
FROM
      GAMES.COUNTRY,
      GAMES.PARTICIPATION
WHERE
      PARTICIPATION.COUNTRY_ISOCODE = COUNTRY.COUNTRY_ISOCODE
GROUP BY
      COUNTRY_OLYMPIC_NAME;

answered Sep 16, 2013 at 14:37

Srini VSrini V

11k14 gold badges66 silver badges89 bronze badges

Similar error will be their when you have invalid select columns like below.
try below SQL and see yourself.

SELECT
    1 ,
    2 ,
    S /*FF               */
    NULL,
    4 ,
    /*FF       */
    NULL,
    /*FF        */
    NULL,
    /*FF                */
FROM
    dual;

answered Dec 10, 2022 at 12:59

VaibsVaibs

2,00822 silver badges29 bronze badges

Источник

You need an alias for both derived tables. And the outer pair around the from clause is useless.

SELECT DISTINCT t1.unique_id AS uid, t1.confidence_is_same
FROM ( --<< only one opening parenthesis
  SELECT unique_id,
         confidence_is_same,
         first_name,
         last_name,
         postal_code
  FROM daniel.unique_physician
  WHERE daniel.unique_physician.first_name = ''
  AND   daniel.unique_physician.last_name = ''
  AND   daniel.unique_physician.is_root_phys = 0
  AND   daniel.unique_physician.postal_code = ''
) t1 ---<< the alias for the derived table is missing
  INNER JOIN (
    SELECT max(confidence_is_same) OVER (PARTITION BY root_id) max_conf
    FROM daniel.unique_physician
    WHERE daniel.unique_physician.first_name = ''
    AND   daniel.unique_physician.last_name = ''
    AND   daniel.unique_physician.is_root_phys = 0
    AND   daniel.unique_physician.postal_code = ''
  ) t2 ON t1.confidence_is_same = t2.max_conf

But the join isn’t needed in the first place. Your query can be simplified to:

SELECT DISTINCT t1.unique_id AS uid, t1.confidence_is_same
FROM (
  SELECT unique_id,
         confidence_is_same,
         max(confidence_is_same) OVER (PARTITION BY root_id) max_conf
  FROM daniel.unique_physician unq
  WHERE unq.first_name = ''
  AND   unq.last_name = ''
  AND   unq.is_root_phys = 0
  AND   unq.postal_code = ''
) t1
where confidence_is_same = max_conf;

You don’t need to select first_name, last_name and postal_code in the inner select as you don’t use them in the outer select. This can make the query potentially more efficient.

Additionally, the condition unq.last_name = '' won’t do what you think it does. Oracle does not have an «empty string». A string with length zero ('') will be stored as NULL, so what you really want is probably:

SELECT DISTINCT t1.unique_id AS uid, t1.confidence_is_same
FROM (
  SELECT unique_id,
         confidence_is_same,
         max(confidence_is_same) OVER (PARTITION BY root_id) max_conf
  FROM daniel.unique_physician unq
  WHERE unq.first_name is null
  AND   unq.last_name is null
  AND   unq.is_root_phys = 0
  AND   unq.postal_code is null
) t1
where confidence_is_same = max_conf;

Источник

Learn the cause and how to resolve the ORA-00923 error message in Oracle.

Description

When you encounter an ORA-00923 error, the following error message will appear:

ORA-00923: FROM keyword not found where expected

Cause

You tried to execute a SELECT statement, and you either missed or misplaced the FROM keyword.

Resolution

The option(s) to resolve this Oracle error are:

Option #1

This error can occur when executing a SELECT statement that is missing the FROM keyword.

For example, if you tried to execute the following SELECT statement:

SELECT *
suppliers;

You could correct this SELECT statement by including the FROM keyword as follows:

SELECT *
FROM suppliers;

Option #2

This error can also occur if you use an alias, but do not include the alias in double quotation marks.

For example, if you tried to execute the following SQL statement:

SELECT owner AS 'owner column'
FROM all_tables;

You could correct this SELECT statement by using double quotation marks around the alias:

SELECT owner AS "owner column"
FROM all_tables;

Option #3

This error can also occur if you add a calculated column to a SELECT * statement.

For example, if you tried to execute the following SQL statement:

SELECT *, CAST((FROM_TZ(CAST(last_modified_date AS timestamp),'+00:00') at time zone 'US/Pacific') AS date) AS "Local Time"
FROM suppliers;

You could correct this SELECT statement by including the table name qualifier in front of the wildcard:

SELECT suppliers.*, CAST((FROM_TZ(CAST(last_modified_date AS timestamp),'+00:00') at time zone 'US/Pacific') AS date) AS "Local Time"
FROM suppliers;

Option #4

You can also generate this error by having an unbalanced set of parenthesis.

For example, if you tried to execute the following SQL statement:

SELECT COUNT(*)) AS "Total"
FROM suppliers;

You could correct this SELECT statement by removing the extra closing parenthesis just prior to the alias:

SELECT COUNT(*) AS "Total"
FROM suppliers;

Источник

ORA-00923

ORA-00923 is a commonly seen error that is easily resolved by simply correcting its syntax. Keep in mind ORA-00923 does not occur in Oracle 10g.

The Problem

When you are faced with this error, you will see the following message:

ORA-00923 FROM keyword not found where expected

ORA-00923 occurs when you try to execute a SELECT or REVOKE statement without a FROM keyword in its correct form and place. If you are seeing this error, the keyword FROM is spelled incorrectly, misplaced, or altogether missing. In Oracle, the keyword FROM must follow the last selected item in a SELECT statement or in the case of a REVOKE statement, the privileges. If the FROM keyword is missing or otherwise incorrect, you will see ORA-00923.

The Solution

To resolve ORA-00923, the user should make sure three possible causes are corrected. First, the user must correct the syntax. Make sure you have placed the keyword FROM in its correct place, and that no spelling errors have occurred. Secondly, if you used quotation marks in an alias, make sure that they have properly enclosed the alias and that they are double quotation marks. Lastly, make sure no reserved words were used as an alias. See the Oracle appendix for reserved words to view a complete list. For practical application of these practices on how to resolve ORA-00923, see the following examples.

In the following example, the query is missing the keyword FROM:

SELECT *

employees;

To correct the statement, insert the FROM keyword in the correct place, and run again:

SELECT *

FROM employees;

Another example of the ORA-00923 error is when quotation marks do not properly enclose the alias, as in the following:

SELECT manager AS manager column

FROM all_tables;

The alias—in this example, manager column—is not enclosed in double quotation marks. Resolve ORA-00923 by fixing this syntax mistake.

SELECT manager AS “manager column”

FROM all_tables;

Looking Forward

Avoiding ORA-00923 in the future is a matter of keeping to the proper syntax when executing SELECT or REVOKE statements. While correcting this error is not difficult, simply remember the following rules to avoid seeing this error.

Remember:

The FROM keyword should follow the last selected item. Make sure it is not misspelled, misplaced, or missing.
Make sure you have enclosed the alias in double quotation marks.
Make sure no Oracle reserved word was used as an alias.

If you continue to experience this error, you may consider contacting your database administrator or a licensed Oracle consultant. Always check your consultant’s credentials and experience to ensure they meet your needs.

Источник

ORA-00923

ORA-00923: ключевое слово FROM не было найдено, где оно ожидалось

Причина:

В операторах SELECT или REVOKE ключевое слово FROM скорее всего пропущено, неправильно размещено, или неправильно написано. Ключевое слово FROM должно сопровождаться последним элементом в SELECT операторе, или привилегией в REVOKE операторе.

Действие:

Вставьте ключевое слово FROM где это следует. Выбранный вами список сам по себе может быть ошибочным.

Источник