[FLINK-3086] ExpressionParser does not support concatenation of suffix operations

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.1.0
• Component/s: Table SQL / API
• Assignee: Timo Walther
• Reporter: Timo Walther
• Created: 26/Nov/15 19:24
• Updated: 27/Apr/16 10:58
• Resolved: 27/Apr/16 10:58

Description

The ExpressionParser of the Table API does not support concatenation of suffix operations. e.g.

table.select("field.cast(STRING).substring(2)")

throws an exception.

org.apache.flink.api.table.ExpressionException: Could not parse expression: string matching regex `\z' expected but `.' found
	at org.apache.flink.api.table.parser.ExpressionParser$.parseExpressionList(ExpressionParser.scala:224)

However, the Scala implicit Table Expression API supports this.

Issue Links

• relates to: FLINK-3579 Improve String concatenation