MDSplus supports scalars or arrays of text strings. Text strings are limited to lengths of 64K characters.
The following table lists some of the more common operations performed on the text datatype:
| Function
| Description
|
| ADJUSTL
| Adjust string left
|
| ADJUSTR
| Adjust string right
|
| BSEARCH
| Binary search
|
| BUILD_PATH
| Convert string to node reference
|
| BUILD_WITH_UNITS
| Attach units to value
|
| COMPILE
| Compile string into TDI expression
|
| CONCAT
| Concatenate strings
|
| DATE_TIME
| Convert quadword internal time to string
|
| DECOMPILE
| Convert compiled expression or value to string
|
| ELEMENT
| Extract element of string
|
| EQ [==]
| Test for equality
|
| EXECUTE
| Compile and evaluate string
|
| EXTRACT
| Extract portion of string
|
| FOPEN
| Open a file
|
| GE [>=]
| Test for greater or equal
|
| GT [>]
| Test for greater
|
| INDEX
| Locate substring in string
|
| LE [<=]
| Test for less or equal
|
| LEN
| Length of string
|
| LEN_TRIM
| Length of string without trailing white space
|
| LGE
| Test for greater or equal
|
| LGT
| Test for greater
|
| LLE
| Test for less or equal
|
| LLT [<=]
| Test for less
|
| LT [<]
| Test for less
|
| MAKE_WITH_UNITS
| Attach units to value
|
| NE [!=]
| Test for not equal
|
| REPEAT [>]
| Concatenate copies of string
|
| SCAN
| Scan a string for character in set
|
| SORT
| Make index list of sorted elements in array
|
| SORTVAL
| Sort elements in array
|
| TEXT
| Convert to text
|
| TRANSLATE
| Replace matching characters
|
| TRIM
| Remove trailing white space
|
| UNION
| Reduce array to unique values
|
| UNITS
| Get the units
|
| UNITS_OF
| Get the units
|
| UPCASE
| Convert to uppercase
|
| VERIFY
| Verify that a set of characters in string
|