[
https://issues.apache.org/jira/browse/FLINK-35962?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Dylan He updated FLINK-35962:
-----------------------------
Description:
Add REGEXP_INSTR function.
----
Returns the position of the first substring in {{str}} that matches {{regex}}.
Example:
{code:sql}
> SELECT REGEXP_INSTR('Steven Jones and Stephen Smith are the best players',
> 'Ste(v|ph)en');
1
> SELECT REGEXP_INSTR('Mary had a little lamb', 'Ste(v|ph)en');
0
{code}
Syntax:
{code:sql}
REGEXP_INSTR(str, regex)
{code}
Arguments:
* {{str}}: A STRING expression to be matched.
* {{regex}}: A STRING expression with a pattern.
Returns:
An INTEGER.
Result indexes begin at 1, 0 if there is no match.
In case of a malformed {{regex}} the function returns an error.
If either argument is NULL, the result is NULL.
See also:
*
[Spark|https://spark.apache.org/docs/3.5.1/sql-ref-functions-builtin.html#string-functions]
*
[Databricks|https://docs.databricks.com/en/sql/language-manual/functions/regexp_instr.html]
*
[MySQL|https://dev.mysql.com/doc/refman/8.4/en/regexp.html#function_regexp-instr]
*
[PostgreSQL|https://www.postgresql.org/docs/16/functions-matching.html#FUNCTIONS-POSIX-REGEXP]
was:
Add REGEXP_INSTR function.
----
Returns the position of the first substring in {{str}} that matches {{regex}}.
Example:
{code:sql}
> SELECT REGEXP_INSTR('Steven Jones and Stephen Smith are the best players',
> 'Ste(v|ph)en');
1
> SELECT REGEXP_INSTR('Mary had a little lamb', 'Ste(v|ph)en');
0
{code}
Syntax:
{code:sql}
REGEXP_INSTR(str, regex)
{code}
Arguments:
* {{str}}: A STRING expression to be matched.
* {{regex}}: A STRING expression with a pattern.
Returns:
A STRING.
Result indexes begin at 1, 0 if there is no match.
In case of a malformed {{regex}} the function returns an error.
If either argument is NULL, the result is NULL.
See also:
*
[Spark|https://spark.apache.org/docs/3.5.1/sql-ref-functions-builtin.html#string-functions]
*
[Databricks|https://docs.databricks.com/en/sql/language-manual/functions/regexp_instr.html]
*
[MySQL|https://dev.mysql.com/doc/refman/8.4/en/regexp.html#function_regexp-instr]
*
[PostgreSQL|https://www.postgresql.org/docs/16/functions-matching.html#FUNCTIONS-POSIX-REGEXP]
> Add REGEXP_INSTR function
> -------------------------
>
> Key: FLINK-35962
> URL: https://issues.apache.org/jira/browse/FLINK-35962
> Project: Flink
> Issue Type: Sub-task
> Components: Table SQL / API
> Reporter: Dylan He
> Priority: Major
>
> Add REGEXP_INSTR function.
> ----
> Returns the position of the first substring in {{str}} that matches {{regex}}.
> Example:
> {code:sql}
> > SELECT REGEXP_INSTR('Steven Jones and Stephen Smith are the best players',
> > 'Ste(v|ph)en');
> 1
> > SELECT REGEXP_INSTR('Mary had a little lamb', 'Ste(v|ph)en');
> 0
> {code}
> Syntax:
> {code:sql}
> REGEXP_INSTR(str, regex)
> {code}
> Arguments:
> * {{str}}: A STRING expression to be matched.
> * {{regex}}: A STRING expression with a pattern.
> Returns:
> An INTEGER.
> Result indexes begin at 1, 0 if there is no match.
> In case of a malformed {{regex}} the function returns an error.
> If either argument is NULL, the result is NULL.
> See also:
> *
> [Spark|https://spark.apache.org/docs/3.5.1/sql-ref-functions-builtin.html#string-functions]
> *
> [Databricks|https://docs.databricks.com/en/sql/language-manual/functions/regexp_instr.html]
> *
> [MySQL|https://dev.mysql.com/doc/refman/8.4/en/regexp.html#function_regexp-instr]
> *
> [PostgreSQL|https://www.postgresql.org/docs/16/functions-matching.html#FUNCTIONS-POSIX-REGEXP]
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