Normalize BIT column default literals#439
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Store BIT defaults as canonical bit literals (b'...') in the information schema and render them as bit literals for SHOW CREATE TABLE, while using SQLite integer literals for the internal table DDL and DEFAULT assignments. This fixes dumps that emitted invalid output such as `bit(1) DEFAULT '0'` for BIT columns defined with a quoted-string, integer, hex, bit-literal, or TRUE/FALSE default.
akirk
reviewed
Jun 19, 2026
| } | ||
| $mysql_type = strtolower( $mysql_type ); | ||
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| if ( str_starts_with( $mysql_type, 'bit' ) ) { |
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Could this match something else starting with bit?
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@akirk There is no other type starting with bit in MySQL, so this should be safe. It's matching on a prefix to catch the full bit(4) syntax that is stored in the information schema.
zaerl
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Jun 19, 2026
zaerl
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Jun 19, 2026
Cover the 0x... hex form alongside the existing b'...', 0b..., and x'...' BIT default cases.
zaerl
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Jun 19, 2026
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JanJakes
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Jun 19, 2026
## Release `3.0.0-rc.4` Version bump and changelog update for release `3.0.0-rc.4`. **Changelog draft:** * Normalize BIT column default literals ([#439](#439)) * Optimize MySQL lexer (~2× speedup) ([#424](#424)) * Fix `RAND()` function behavior ([#363](#363)) * CI: Disable Xdebug, use Rust release builds, consolidate unit-test matrix ([#425](#425)) * GitHub Actions workflow updates ([#404](#404)) * Add native Rust-based MySQL parser extension ([#381](#381), [#384](#384), [#386](#386), [#389](#389), [#390](#390), [#394](#394), [#398](#398)) * Ship native parser as WASM ([#395](#395), [#396](#396), [#397](#397), [#399](#399), [#400](#400), [#401](#401)) * Add SQLite plugin landing page ([#407](#407), [#412](#412)) * Check Playground web runtime compatibility ([#419](#419)) **Full changelog:** v3.0.0-rc.3...release/v3.0.0-rc.4 ## Next steps 1. **Review** the changes in this pull request. 2. **Push** any additional edits to this branch (`release/v3.0.0-rc.4`). 3. **Merge** this pull request to complete the release. Merging will automatically build the plugin ZIP and create a [GitHub release](https://github.com/WordPress/sqlite-database-integration/releases). > [!NOTE] > This is a **pre-release**. It will not be deployed to [WordPress.org](https://wordpress.org/plugins/sqlite-database-integration/).
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What
BIT column defaults were stored and rendered incorrectly. A column such as
BIT(1) DEFAULT '0'(e.g., as produced by Ninja Forms) emitted an invalidSHOW CREATE TABLE/ dump line:MySQL does not accept a quoted-string default on a BIT column—the value has to be a bit literal (
b'0') or a number (0). The invalid output broke dump/restore flows (e.g., Studio → Pressable).Fix
Normalize BIT column default literals end to end:
b'...').SHOW CREATE TABLE: Emit the stored bit literal verbatim (bit(1) DEFAULT b'0').column = DEFAULT: Render the bit literal as the SQLite integer it maps to.Tests
SHOW CREATE TABLEoutput and the inserted/read-back values for every default form (quoted string, integer,b'…',0b…,x'…',TRUE,FALSE).UPDATE … SET col = DEFAULTon a BIT column.