Description
The STRING type allows to handle sequences of characters, typically text.
There are various String Functions available for processing
STRING input.
When entering STRING constants manually, they have to be quoted with single quotes ('...').
Single quotes within a STRING constant have to be escaped with a backslash (\').
A literal backslash within a STRING constant also have to be escaped with a backslash (\\).
Unicode characters are supported in all functions which support the STRING type, unless specifically
noted in the documentation for the given function. Everywhere the word "character" is used, "Unicode character"
can be implicitly assumed, independent on the size of the underlying encoding of the Unicode string. For example the
LEN function will count the number of Unicode characters
in the input STRING, and not the number of bytes in the underlying representation.
Example
STRING column,
since backslash escaping is only relevant in STRING constants within a PQL query:
Column1
' '
Column2
'Test 123'
Column3
'Test \'123\''
Column4
'Test \\123\\'