15075
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master: 87%

Ran 16 Jan 2019 01:08PM UTC

Jobs 1

Files 363

Run time 37s

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Build # 15075

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push

travis-ci

Committed by

Korablev77

Commit Message

sql: compute resulting collation for concatenation

According to ANSI, result of concatenation operation should derive
collation sequence from its operands. Now it is not true: result is
always comes with no ("none") collation.

In a nutshell*, rules are quite simple:

a) If some data type  has an explicit collation EC1, then every data
type that has an explicit collation shall have declared type collation
that is EC1.  The collation derivation is explicit and the collation is
EC1.

b) If every data type has an implicit collation, then:

 - If every data type has the same declared type collation IC1, then
   the collation derivation is implicit and the collation is IC1.

 - Otherwise, the collation derivation is none.

c) Otherwise, the collation derivation is none.

*Read complete statement at 9.5 Result of data type combinations

Closes #3937

Run Details

64225 of 77600 relevant lines covered (82.76%)

2624709.24 hits per line

Jobs

ID	Job ID	Ran	Files	Coverage
4	15075.4 (TARGET=coverage)	16 Jan 2019 01:08PM UTC	363	82.76	Travis Job 15075.4

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