Dylan He created FLINK-35964:
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Summary: Add STARTSWITH function
Key: FLINK-35964
URL: https://issues.apache.org/jira/browse/FLINK-35964
Project: Flink
Issue Type: Sub-task
Components: Table SQL / API
Reporter: Dylan He
Add STARTSWITH function.
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Returns if {{expr}} begins with {{startExpr}}.
Example:
{code:sql}
> SELECT STARTSWITH('SparkSQL', 'Spark');
true
> SELECT STARTSWITH('SparkSQL', 'spark');
false
{code}
Syntax:
{code:sql}
STARTSWITH(expr, startExpr)
{code}
Arguments:
* {{expr}}: A STRING or BINARY expression.
* {{startExpr}}: A STRING or BINARY expression.
Returns:
A BOOLEAN.
{{expr}} and {{startExpr}} should have same type.
If {{expr}} or {{startExpr}} is NULL, the result is NULL.
If {{startExpr}} is the empty, the result is true.
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/startswith.html]
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