I have a column of data with values resembling this: HL7_Result_for_Message_ID_123Q324343.hl7 I need to grab that ID number (in bold), the challenge being that it can be any and all lengths. I have ...
Read this SQL tutorial to learn when to use SELECT, JOIN, subselects and UNION to access multiple tables with a single statement. It’s sometimes difficult to know which SQL syntax to use when ...
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